Filter is the key projects when we maintenance to the car, oil filter, air filter, fuel filter, the so-called "three filter" Conservation has always been a point of attention. In addition to these three common commonly used filters, there is a transmission oil filter, its maintenance methods very few people know, is very simple, just use the OBD Diagnostic Tool can be.

The conservation process in the daily inspection car, the car transmission oil filter is rarely mentioned, unless damaged, affecting the transmission operation, otherwise, its maintenance is easy to be overlooked in. Because in most cases, transmission oil filter is not like oil, air or fuel filter as easy to replace. In fact, since the automatic transmission oil, ATF filter is a device for protecting the second main assemblies, so it should be kept clean or replaced in time according to the Launch X431 V Pro or Launch X431 IV GX4 Master equipment recommended by the manufacturer.

The automatic transmission usually paper filter, felted membrane filter or oil filter to filter out the dirt. Asian carmakers like using a membrane filter; and European and American manufacturers are more inclined to paper or felt filter.

Some car manufacturers have introduced long-life or maintenance-free transmission. The transmission no dipstick device and its normal maintenance, ATF and filter replacement cycle of up to 160,000 km / h.

For the ATF filter, you can't judge the performance of the filter, unlike oil filter to be replaced follow along as oil, unlike the air filter, you can take it down and clean it, transmission oil filter can only rely on inspection and maintenance process maintenance personnel inspection tips. It also reminds us that we must have understand of basic car maintenance knowledge, or you can use the Autel MaxiSys Pro MS908P or Autel MaxiSys MS908 professional equipment to check the filter work performance.

Source: http://www.focalobd.com/blog/how-to-maintenance-of-automatic-transmission-oil-filter/

Posted by: obdtools at 06:11 AM | No Comments | Add Comment
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EFI engine is currently using a wide range of devices on the car, compared with the conventional carbureted fuel system, EFI engine fuel supply system, not only complex, but also parts with precision. When cleaning maintenance to must pay special attention to, when necessary also need to use Auto Diagnostic Tool to check the engine oil supply system.

During cleaning maintenance, some parts can not be disassembled and dismantled, some parts assembly requirements is high, which makes fuel injection system than carbureted gasoline vehicles are more vulnerable to gasoline in the glial, sediment hazards, resulting in clean work is very complicated.

Engine fuel supply system, into the exhaust system is clean, has a decisive influence on car driving performance and even. Due to the influence of driving environment and fuel quality, the injection nozzle, intake manifold into the exhaust valve and combustion chamber and other prone resin sediment, through the Launch X431 PAD or Launch X431 GDS tool inspection data show, affecting the normal fuel supply, caused by fuel injection quantity control are not allowed, atomization adverse, oil pressure regulator failure, resulting in engine idle speed instability, poor acceleration, knock, lack of fire, increased fuel consumption, exhaust emissions exceeding etc. fault phenomenon occurs.

In order to clean the oil supply system need to solve the problem from the inside, they usually avoid demolition clean way. Vehicle cleaning job by Xtool PS2 or Autoboss V30 SPX special equipment and cleaning agents, under certain pressure and flow control, intake manifold, fuel injectors, intake and exhaust valves and thoroughly clean the combustion chamber, in order to restore normal operation of the fuel system to ensure good driving performance of the car.

Source: http://www.focalobd.com/blog/how-to-clean-efi-engine-gasoline-injection-system/

Posted by: obdtools at 02:58 AM | No Comments | Add Comment
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New buy the car engine appears knock phenomenon. I believe that there are some people who have a little in-depth understanding of the working principle of the automotive engine, should understand the engine appears knock whether quality problem. if you don't have any information about the engine of the car, then we look together, what is knocking? Why the engine will knock? What effect does the knock have on the engine? How to avoid the engine knock? Why use the OBD Diagnostic Tool to check the engine knock?

The so-called "knock" is not to say that engine would explode or violent shaking, but refers to the gasoline engine before the spark plug without ignition, sprayed into the cylinder fuel is because of the cylinder body and the high temperature and the occurrence of spontaneous combustion of a non normal phenomenon. The spontaneous combustion will not only cause engine cylinder in local temperature is too high, can not let fuel to participate in the work of the engine, resulting in power output in serious decline, resonance between the piston and cylinder wall, because of abnormal vibration caused by explosion is called "knock".

Engine knock is actually the most important reason is that gasoline grade is too low, we often say that the number 92, number 95 refers to the grade of gasoline, Gasoline label is neither refers to the purity, nor does it imply a lot of people often say that the so-called octane number, but gasoline anti-knock index, also known as anti-knock index.

Focus, Mazda 3 and other vehicles encountered the "knock", the manufacturers solution is to use Autoboss V30 SPX or AUTOBOSS V30 Elite tool for trip computer upgrade, the knock problem is solved.

Engine knock is not the most important step to upgrade software part, the modern automobile engine through hardware modifications also cannot let knock disappear, essentially the only solution is based on the actual demand of the engine, the correct selection grade of gasoline .

Recommend vehicle appear knocking, first switch to high-grade gasoline, suppress the occurrence of knocking fundamentally. Try to avoid prolonged idling stop, avoid high gear low speed driving, automatic models accelerate to overtake, use low gear when climbing or manual shift mode, can effectively reduce the production of coke, to suppress detonation engine protection is also very favorable. Timely use Autel Maxidiag Elite MD701 or Autel MaxiDiag EU702 tool to check the engine, regularly clean the throttle, using high-grade synthetic oil can also reduce the incidence of carbon, the same can effectively avoid the generation of knock.

Source: http://www.focalobd.com/blog/what-causes-a-car-to-knock-and-car-knock-solutions/

Posted by: obdtools at 03:29 AM | No Comments | Add Comment
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Engine in the working process to inhale large amounts of air, if the air does not through the filter, the dust suspended in the air is inhaled in the cylinder will accelerate the abrasion of the piston and cylinder. Between the larger particles into the piston and the cylinder, pass Auto Diagnostic Tool inspection showed that the dry and sandy working environment more seriously. Air filter is installed in the front of the carburetor or inlet pipe, have the effect of filter dust and sand in the air, to ensure adequate, clean air enters the cylinder.

Air Filter Feature:
1, Filtration precision: filter out all the larger particles (> 1- 2 um)
2, High filtration efficiency: reducing the number of particles through the filter.
3, To prevent the engine from early wear. To prevent air flow meter damage!
4, Low pressure, ensure that the engine has the best fuel ratio. Reduce the filtration loss.
5, Filtration area, high dust capacity, long service life. Reduce operating expenses.
6, Small installation space, compact structure.
7, Wet quite high, deflated suction phenomenon occurs to prevent the filter, the filter is causing the breakdown.
8, Retardant
9, Reliable sealing performance
10, Good price
11, No metal structure. Environmentally friendly, reusable. Conducive to storage.

Air filter replacement cycle is generally recommended cars each driving 15,000 km replacement. Often working in the harsh environment of the vehicle should be replaced once not more than 10,000 kilometers. you can use Launch Diagnostic Tool or Autel Diagnostic Tool to check the engine's performance, air filter life, the car is 30000 kilometers, commercial car is 80000 kilometers.

Source: http://www.focalobd.com/blog/air-filter-performance-feature/

Posted by: obdtools at 02:54 AM | No Comments | Add Comment
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The fuel additive can make up for the quality problem of the fuel itself and the shortage of the automobile machinery manufacturing limit, through the Auto Diagnostic Tool checking data show: fuel additives remove carbon deposits have to save fuel, reduce emissions and enhance the power.

More than 2 years of the car must be use fuel additives, if not continuous use can also continuously for more than three times every a month and a half, if the interval is too long suggestions with large doses of some, truly effective removal of carbon deposition, improve fuel environment.

Fuel additives Selection Considerations
1, Understand the ingredients of the additive product, this is the main factor determine product efficacy, inferior additive products for fuel, and even has a harmful effect on the engine. Many of the additives on the market have exaggerated effect, some only have clean function, there is no help for power, truly effective additives, after use of the first tank generally have obvious feeling.

2, The product is safe and reliable, many products after use will cause acid corrosion of the engine, or metal residue, but caused great damage on the car, so choose is sure to choose non corrosive, non residual brand.

3, In the selection of the additive when it is best to use well-known brand additive. Secondly, we can pay attention to product packaging certification mark, query the security code.

4, Whether the product has a brand trademark, whether the packaging has a bar code, whether the product has the quality of the authority of the certification, if it is imported products are through the formal channels. Typically use fuel additives, after a month, using the Launch X431 V+ Pro3 or Launch X431 IV GX4 Master tool to check, engine performance can significantly improve a lot.

Source: http://www.focalobd.com/blog/fuel-additive-use-common-sense/

Posted by: obdtools at 03:19 AM | No Comments | Add Comment
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Many drivers see lubricant color black, they think oil quality has been a serious deterioration, and replace it, resulting in waste. Normally, car oil at just replaced, color is golden yellow, are generally will added clean dispersant, the purpose is to wash the adhesion and black carbon deposition film on the piston down and dispersed in oil, reduce engine generate high temperature deposits, so the use of lubricants colors tend to darken after a period of time, but this time the oil does not deteriorate, the use of oil is serious deterioration, needs to be replaced by the Auto Diagnostic Tool can determine whether the need to replace, is not observed the oil color black, concludes that need to be replaced lubricant.

Under normal circumstances, regardless of any brand of lubricating, its life cycle can be maintained at more than 5,000 km, to the 8000 km -10 000 kilometers need to replace oil. Only when the long-term bad driving habits, such as frequent Jicha, refueling too fast, the speed at 3000 rpm or more frequently, oil change intervals will advance.

After a period of time, engine oil the color will gradually darken, why lubricant color will change to black?
First, the fuel in the olefin content, sulfur content is high (gasoline engine is easy to form sludge, diesel engines easy to form smoke stains), easy to make the engine oil black, and thus fuel quality is the source of oil black.

Second, the different structure and working conditions of the engine, it is easy to make gasoline engine oil sludge generated, form smoke stains incomplete combustion of diesel engine, thus lubricant turning black, you can use a Launch X431 V Pro or Launch X431 Diagun III tools to check these phenomena.

Third, In order to overcome the fuel and mechanically induced results, lubricating oil to adding dispersant to prevent sludge or smoke stains on the cylinder formation deposited in the film or the body, the higher the quality of the oil, dispersed better, but oil is volatile black, so high quality oil, than the poor oil variable black faster.

Fourth, Oil color black produced sludge is related to launch a pilot time overly high temperature operation, and not to clean the engine when the car in the oil and oil bottom, associated with the filterability of oil filter.

Engine oil replacement time, premature cause lubricating oil waste, too late will increase engine wear and shorten engine life and maintenance cycle, so you need to use Autel MaxiSys Pro MS908P or Autel MaxiDas DS708 tool to check the engine. The deterioration degree of lubricant has relationship with the performance of automobile, repair technology, driving level, road and weather condition, lubricant quality, etc, uniform regulations drain intervals sometimes not entirely realistic. If after a period of use of lubricants appear dimmed color, white, indicating filling oil mixed with water, which emulsion occurs. The basic properties of lubricants has been completely lost, the engine cooling system and combustion system for leaks, should not continue to use.

Source: http://www.focalobd.com/blog/lubricating-oil-color-black-need-to-be-replaced-immediately/

Posted by: obdtools at 02:48 AM | No Comments | Add Comment
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What is the octane improve agent? What does it do? Octane improver is to increase the octane rating of automotive additives, can be used OBD Diagnostic Tool to check out the car's octane, octane improve agent is a kind of common gasoline additives, which is popular in the additive products.

The most effective way to improve the engine efficiency is to improve the engine's compression ratio, but the compression ratio of an increase, knocking combustion significantly enhanced, higher-octane gasoline can reduce detonation, as the engine compression ratio continues to improve, This forced refineries to produce high-grade gasoline. Octane increase only to reduce engine knock, and reduce fuel consumption, thereby increasing the economic efficiency, Launch X431 V Pro or Launch X431 PAD tool inspection data show: Improve the gasoline octane number 1 unit, saving gasoline 1.3%.

For a long time, oil prices have been stubbornly high, bring the owners a little cost pressures, how to reduce the fuel consumption has been a concern. In addition to source fuel from outside, how can the existing fuel play to the best effect is also very important. Presumably this is the octane value improver where it! Improving fuel quality, to the full combustion, reducing fuel consumption.

Of course, as a gasoline additive, in the selection or according to the specific circumstances of their own car, everything from reality, the effect of the additive to play to the largest , you can use the Autel MaxiScan VAG405 or Autel MaxiDiag FR704 tool to check, it will prompt you to use what kind of gasoline additive.

Source: http://www.focalobd.com/blog/what-is-the-octane-improve-agent/

Posted by: obdtools at 03:08 AM | No Comments | Add Comment
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Through Auto Diagnostic Tool checking data found paper air filter has the following advantages:
1) Filter efficiency up to 99.5% (oil bath air filter 98%), dust transmittance of only 0.1% -0.3%;
2) structure compact, can be installed in any orientation, not by vehicle parts layout constraints;
3) when maintenance is not consume fuel , but also save a lot of cotton yarn, blankets and metal materials and other substances;
4) the quality of small, low cost.

Based on the above advantages, car engines use air filter paper core is becoming more common. The key of good paper air filter is to keep its sealing performance, prevent unfiltered air from bypass entering the engine cylinder.

Paper air filter installation and maintenance guide
1. During installation, air filter and the engine intake pipe between rubber pipe coupling or direct coupling must be tight and reliable, to prevent leakage, the filter must be installed at both ends of the rubber gasket surface; fixed wing air filter housing nuts can not be tightened too much, so as not to crush paper filter.

2. In use, the air filter to prevent rain water paper, because once a large amount of water adsorbed paper, will greatly increase the intake resistance, shorten the service life.

3. Some vehicle engine is equipped with Tornado air filter, paper filter ends of the plastic cover is shroud cast blades rotating air, Launch X431 IV GX4 Master or Launch X431 V+ Pro3 tool data showed that: 80% of the dust separated by centrifugal force and collected in collection Dust arms, to dust paper filter for inhalation of dust was 20%, the total efficiency is about 99.7%.

4. During maintenance, paper filter never use oil cleaning, otherwise the paper filter will be failure, but also easily lead to accidents. When maintenance, use only the vibration method, soft brush division (which folds down to brush) or compressed air cleaning methods remove the attachment surface of the filter paper dust, dirt. Part of the strainer, should be promptly removed the dust parts, pipes, etc. of leaves and cyclone dust. Even if every time meticulously maintained, the paper filter can not completely restore the original performance, the intake resistance will increase, therefore, generally when the paper filter is required when the 4th maintenance, it should be replaced with a new air filter. If the paper filter rupture, perforation or unglued paper and cover other issues, should be replaced immediately.

Air filter is the air enters the engine from the first hurdle, automobile engine is very precise parts, the tiny impurities will damage the engine. Therefore, in the air into the cylinder before, must first go through the fine filtration of air filter, can enter the cylinder. You can use the Autel Maxidiag Elite MD701 or Autel MaxiTPMS TS601 tool regularly to check the engine, and the air filter status is related to the engine's life.

Source: http://www.focalobd.com/blog/paper-air-filter-installation-and-maintenance-guide/

Posted by: obdtools at 05:40 AM | No Comments | Add Comment
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Oil filter is one of the four filters, the other three filters were air filter, air conditioning filter and fuel filter, oil filter is filtering effect of oil impurities to protect the engine does not suffer wear, You can use OBD Diagnostic Tool to check whether the engine is wearing.

Oil filters filter principle can be divided into three categories: mechanical separation, centrifugation and magnetic attraction.

Mechanical separation according to its function and form can be divided into pure mechanical separation, aerial separation and adsorption separation, purely mechanical separation of common mesh filter, on the surface of the filter material has a certain size of holes, the oil of solid particles, the size is greater than the holes will be blocked on the filter material appearance, aerial separation is first attached to one or several small particles size is greater than their cavity the filter material on the inner wall of the cavity size smaller, then the particle because not pile up in the past, the formation of aerial phenomena, the filtering particle size smaller than the cavity size. Since the majority of particles in the oil is irregular, so overhead phenomenon is easy to form. And colloidal substances in the oil, use the Launch X431 GDS or Launch X431 V Pro tools inspection found that often adhesion on the surface or the inner wall of the cavity, the filter material is the adsorption separation.

The centrifugal separation is a rotor that causes the oil to rotate through a high speed, and the impurity in the oil is thrown to the inner wall of the rotor and thus separated from the oil.

Magnetic adsorption is the permanent magnet will be oil in the iron particle adsorption over. Don't let them in oil cycle back and forth, mechanical damage.

On filter classification, generally have the following methods:
1. According to the filter structure form classification: is there a wound rotor, scraping plate, etc.

2. By filtration fineness Classification: surface filtration and depth filtration.

3. After filtering way classification: surface filter and depth.

4. Arranged in the lubrication system by way of classification: a full-flow and bypass type.

Generally recommended 5000km replacement of oil filter, specific according to actual Autel MaxiSys Pro MS908P or Autel MaxiDas DS708 tool inspection data to decide.

Source: http://www.focalobd.com/blog/oil-filter-working-principle-and-type/

Posted by: obdtools at 02:58 AM | No Comments | Add Comment
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Steyr 91 series heavy-duty truck engine adopts a dry air filter. Hyundai increased use of paper air filter, high efficiency air filter paper, Auto Diagnostic Tool test data shows that only 0.1% to 0.3% transmittance of dust. Use paper air filter can reduce wear of the cylinder and piston, extending engine life. Should be used with care and attention to the following points:

(1) Master the characteristics of wd615 engine paper filter and cleaning method
This air filter, the outer filter element is treated with microporous filter paper, and the surface is treated by resin.. In the engine operation, the air filter through the microporous filter to the dust, ensure clean air into the turbocharger and then into the cylinder. Senior internal filter made of felt, a safety cartridge. In use, the filter will pick up around the outer layer of dust. Clean the air filter outside filter, not used water, oil, should prevent oil dip filter; commonly used method is to gently pat. Specifically: gently tap on the tire, beat the dust out, and then dried 0.4mpa the following air purge. When the purge should be blown inside out.

(2) Regular cleaning and replacement of filters
In Steyr 91 series of heavy-duty vehicles so that there shall maintain provisions for periodic air filter cleaning and replacement, in order to avoid excessive dust adhered to the filter, causing the intake resistance increases, reducing engine power and increased fuel consumption. Cars with 2000 ~ 4000km, air filter (inside and outside) clean, replace the filter at the outer 12000km, Launch X-431 PAD or Launch X431 Diagun III tool checks show that: in the best six months to replace the filter. If the filter is damaged should be replaced promptly.

(3) Installed correctly
In the inspection and maintenance of air filters, the seal on the filter pad must be installed well. Rubber gaskets easy to aging and deformation, the air is easy to flow through the gap from the seal, the dust into the cylinder. If the gasket aging, the best replacement of the air filter. External filter meshes such as rupture or the upper and lower end caps glued joints cracked should be replaced.

Dry air filter is passed through a dry filter, such as paper filter, the air impurities in the filter. Light vehicles (including cars, mini-cars) is generally used as a single-stage air filter. Its oval or elliptical shape and flatbed. The filter material is filter paper or nonwoven fabric. Filter cover with metal or polyurethane, the shell material is a metal or plastic. At rated air volume flow, original filtration efficiency filter should not be less than 99.5%.

Heavy duty vehicle due to poor working conditions, it must be more than one air filter. The first stage cyclone pre-filter (such as a blade ring, swirl tubes, etc.), used to filter impurities coarse particles, filtration efficiency above 80%, the second stage fine filter is a porous paper filter (commonly referred to as primary filter), the filtration efficiency of 99.5%. after the main filter element and a security filter, its role is in the installation and replacement of the main filter element, or in the main filter accidental damage, to prevent dust from entering the engine, you can regularly for the use of Xtool PS2 or Autel Maxidiag Elite MD703 tools to check the engine performance, the core material more secure non-woven fabric, but also the use of filter paper.

Source: http://www.focalobd.com/blog/steyr-91-series-heavy-duty-truck-air-filter-maintenance-guide/

Posted by: obdtools at 03:18 AM | No Comments | Add Comment
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Wash the car is not just for the purpose of keeping car surface bright as new, a lot of time washing is intended to better protect the paint effect. But the seemingly simple car wash also prone to error, you can use the OBD Diagnostic Tool to easily check out the car problem.

Wash the car number should not be too frequent, otherwise it will accelerate paint oxidation, if the weather such as dust, dirt, rain, after the owner should to clean vehicles as soon as possible. Also, if a long time without washing car, the harmful material such as acid ingredients and dust in air erosion and adhesion, will accelerate the aging and damage to the car paint. Paint damage will make the body lose protection and oxidation of metal parts, causing the vehicle to earlier damage. Therefore, the car once a week is the best frequency.

When choosing a the sun is not very strong car wash is best, because the weather was there won't be because of the glare and bring damage to the car paint, and don't have to worry about because it's cloudy and residual moisture evaporation. Vehicle cleaning after the completion of inspection, It is best to use the Launch X431 V+ Pro3 or Launch X431 Creader VII+ tool to check the vehicle after cleaning, carefully check and wipe after pulled out of the vehicle cleaning area. This is because the body is not dry, machine cover, glass glue slot etc. easily attached to dust.

Many owners choose to do it yourself car wash, you should first select the car wash windless cool place, do not let the car in the hot sun or exposed to air, it should be noted once again choose the correct washing tools, wash the car before check whether Autel MaxiTPMS TS401 or Autel MaxiDiag Elite MD802 tools clean, at the same time, should master skills necessary in the car wash, wash the car at the beginning of the first wash car body in the sand, dust, etc., after the end of the car wash should wipe clean the car, use a towel to wipe should be separated with a car wash towels.

Source: http://www.focalobd.com/blog/cleaning-the-car-what-should-pay-attention-to/

Posted by: obdtools at 03:05 AM | No Comments | Add Comment
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Some owners for air-conditioning system maintenance, how to choose the right accessories to do air conditioning maintenance will encounter many problems. Due to the owners of vehicles are not familiar with, and don't want to use Auto Diagnostic Tool to check, so here we give you a introduction to buy these accessories:

1. How to buy air filters?
Air filter: quality of original brand quality long-term air conditioning filter with respect to the poor quality of ordinary Deputy plant air filter, in the service life and impurity filtration efficiency to far wins a chip. Can guarantee the higher impurity filtration efficiency and extend the maintenance cycle.

1. How to buy air filters?
2. Refrigerant How to choose?
Refrigerant: Pure brand R134a environmental refrigerant, it can ensure 2--3 years of life. Currently on the market of the refrigerant uneven, some good and some bad, media have exposed automotive air conditioning refrigerant sample test pass rate is currently less than 10%. If you use of counterfeit refrigerant in a short time can refrigeration, but long-term use, light will produce refrigerant leakage, resulting in automotive air conditioning and refrigeration effect is not good, will lead to serious damage to the air conditioning compressor, if use Launch X431 V Pro or Launch X431 IV GX4 tool to check in advance, can quickly check out the fault. So when buying refrigerant, must pay attention to choose the high quality brand pure refrigerant.

1. How to buy air filters?
Buy air filters, refrigerant and air conditioning cleaning agent must pay attention to product quality, quality air filters, air conditioning refrigerant and air-conditioning cleaning agent can play a very good protection, increase of air conditioning refrigeration effect, kill in air conditioning mold and bacteria, eliminate odor, recovery and the freshness of the air inside the car, but inferior air filter, refrigerant and air conditioning cleaning agent not only can not achieve the effect, but will damage parts of the air conditioning system, use the Autel MaxiSys Pro MS908P or Autel MaxiTPMS TS601 tools to check parts of the air conditioning system performance, inferior products will reduce the service life of the air conditioner and the human health will be affected.

Source: http://www.focalobd.com/blog/how-to-buy-automotive-air-conditioning-filter-and-refrigerant/

Posted by: obdtools at 03:09 AM | No Comments | Add Comment
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Anti-lock braking system ABS can be installed on any car with hydraulic brakes. It is the use of the valve body of a rubber balloon, when put on the brakes, giving the brake oil pressure, flooded to the ABS valve, when the airbag use compartment in the middle of the air pressure to return, so to avoid wheel lock dead center. When the wheel is about to reach a dead lock, brake oil pressure the effects of repeated balloon, under the OBD Diagnostic Tool check, found in a matter of seconds can be 60 ~ 120 times, in does not stop brake, relax. ABS is composed of wheel speed sensor, engine speed sensor, solenoid valve, computer and hydraulic control unit (hydraulic regulator), and its characteristics are as follows four:

1, ABS with excellent performance and self diagnostic capabilities, you can rest assured that use. In addition, the use of ABS and the common brake system using almost the same, braking to foot on the brake plate normal braking can be, ABS will own the brake hold at the optimal point.

2, the car brakes, the braking force of the four wheels are different, if the car's front wheels to lock, the driver can not control the direction of travel of the car, prone to risk of a collision, if the first locking the rear wheels, can appear the skidding, tail flick, if installation of ABS, can avoid four wheel is locked, Launch X-431 PAD or Launch X431 GDS tool can detect ABS data, the ABS system improve the stability of the vehicle in the braking process;

3, compared with the conventional braking system, under the state of emergency braking, ABS can make the wheel in both rolling and drag, which greatly increases the tire and the ground friction and shorten the braking distance, namely the so-called optimal braking point or region, while the ordinary brake system is unable to do this;

4, It is proved that the wheel fully locked will cause tire cup type wear, make the uneven abrasion on the tire surface, thereby increasing the tire wear and tear.

Thus, ABS anti-lock system, can avoid the braking when the direction is out of control and wheel sideslip, make the wheel when the brakes are not locked, don't let the tire friction with the ground at one point, so as to increase the friction, in the Autel MaxiSys MS908 or Xtool PS2 tool checks found, ABS system makes the brake efficiency of 90% or more, while reducing brake consumption and extend brake drum, disc and double the life of the tire. Vehicles equipped with ABS in dry blacktop, rain, snow, skid resistance reached 80% - 90%, 30%, 10%, 15% - 20%.

Source: http://www.focalobd.com/blog/anti-lock-braking-system-abs-function-introduction/

Posted by: obdtools at 03:45 AM | No Comments | Add Comment
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Fuel filter is contained in the fuel in the iron oxide, dust and other solid impurities removed, to prevent clogging of the fuel system, reduce mechanical wear and ensure stable operation of the engine, and improve reliability. Fuel filter is a fine part, in use for some time, use the Auto Diagnostic Tool to check the fuel filter performance, if the fault code is 00538, need to replace the fuel filter. Method is as follows:

First, loosen the clamping device at the junction of the oil and fuel filter, then removed fuel filter from the oil passage, followed by a stopper oil passage, so you can prevent fuel spillage. Most of the oil installation in the fuel filter is marked with two arrows, one is the fuel flowing into the arrow, and the other is the fuel outflow arrows, with arrows to indicate the flow of fuel through the fuel filter when. So when we installed the fuel filter, be sure to make the arrow pointing the direction of the engine, that the engine oil is flowing.

In addition, it should be noted that the clamping device in the circuit used is specially designed, rubber hoses and fuel filter in the junction of these two components tightly clamped to achieve sealing effect. Compared with the ordinary clamping device, this device does not cut into the rubber hose, and therefore does not cause damage to the rubber hose, and this clamping device can withstand high oil pressure. In contrast, the ordinary worm type clamping device more easily damage rubber hose caused fuel leakage. Finally, we should also ensure that the rubber hose clamp device is installed in the correct position and in accordance with the specified specifications of the clamping joint.

If the vehicle is without the need to maintain the fuel system, and only use a built-in to the fuel filter, then in vehicle periodic preventive maintenance process, it is not possible to the oil pump, a filter and a fuel output device all replaced, even automotive preventive maintenance interval is long, it is impossible to do that, because of the high cost of doing. But if you use Launch X431 V+ Pro3 or Launch X431 Diagun III tools to check the. It is found that the anomaly of the working performance of the engine, the fuel pressure and fuel system in the critical value, replace the fuel filter placed inside the tank is very necessary.

When using this lute-shaped coupling member also noted that during the installation process must not make the wrong buckle connecting thread situation appears, it should not be applied in large part on the binding of clamping force. Do not use RTV or other types of seals on these lute-shaped coupling member. When installing the coupling member, use wrench to ensure proper clamping force.

After completion of maintenance work on the fuel filter, put all the parts are assembled, replace the fuel pump fuse, and then, in the case of the ignition system does not work, the engine is rotated several turns, until the establishment of the fuel system far from normal when the fuel pressure. At this point, you should check the fuel filter and oil line for leaks. If Autel MaxiScan JP701 or Autel MaxiDas DS708 tool test results show that everything is normal, start the engine run a few minutes, and then re-check again to make sure there are no leaks happen.

Source: http://www.focalobd.com/blog/how-to-correct-replace-fuel-filter/

Posted by: obdtools at 06:21 AM | No Comments | Add Comment
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Audi A6 car engine operation of the exhaust pipe a small amount of black smoke emitted, exhaust gas is faulty. After testing, the engine power was normal. OBD Diagnostic Tool connector perform self-diagnosis, the engine system has a fault code, reads "00561, mixture adjustment exceeds the limit." Executive DTC Clear function, the fault code is cleared. Fault analysis, there may be poor oxygen sensor performance. View the data flow (functional path 01-08-007), the idle mode of the 007 data block 1 zone data (mixed gas formation control value) for -25%, 2 District data (oxygen sensor signal voltage) of 0 809V. Under normal circumstances, the mixture formation control value should be within the range of -10%, 10%, and the fluctuation of the mixture of the mixture is slightly fluctuation with the fuel injection quantity.. -25% data shows that the engine control module attempts to reduce fuel injection, in order to control the concentration of mixture in normal range. The signal voltage of the oxygen sensor is 0 809V, partial rich mixture, in conformity with the fault phenomena of the smoke.

By the principle of fuel injection, the engine control module mainly according to engine speed signal, air flow sensor signal to determine the basic fuel injection quantity, use the Launch X-431 PAD or Launch X431 GDS tool to check air flow sensor. Select the feature path 01-08-002, view the air flow sensor data (4 area data). The air flow at idle speed is about 7.5 kg/s, which is obviously larger than the normal 2 0kg/s -4... The 2 zone data is the theory injection time (crankshaft to a circle), the 3 zone data for the engine a working cycle of injection time (actual injection time). The actual injection time is on the basis of theory of injection time correction of, should be twice fuel injection time and the car of the two injection time almost the same it proves that the theory of injection time is too long, after correction of the actual injection time shorter. When the fuel injection time correction exceed the limit, the failure code will occur 00561. The result of the above detection is that the cause of the fault is the air flow sensor signal is too big 6 replacement air flow sensor, the fault completely ruled out.

Since the air flow sensor signal in the car idling just too high, and in the part-load conditions and acceleration conditions are normal, and therefore less impact on the overall condition of the engine, fuel consumption is not significantly increased. In addition, by Autel MaxiSys Pro MS908P or Xtool PS2 dynamic data analysis process it can be seen, although the engine control module based on the oxygen sensor signal identification to the mixture is too thick, but no corresponding reduction in the fuel injection quantity so that the concentration of the mixture back to normal, the reason is, fuel injection depending on the amount of engine intake air, engine speed, oxygen sensor signal is only a feedback signal as a mixed gas under closed-loop control mode, the fuel injection quantity correction within a certain range.

Source: http://www.focalobd.com/blog/audi-a6-car-exhaust-pipe-black-smoke/

Posted by: obdtools at 03:07 AM | No Comments | Add Comment
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Audi C5A6 equipped with 1.8T engine and automatic transmission, driving mileage of 50000 km. Car owners reflect the engine in 2,3 gear acceleration have abnormal noise, the abnormal noise has lasted about half a month's time, through the OBD Diagnostic Tool to check, the sound becomes apparent.

After testing, in 2, 3 block accelerated heard engine abnormal noise, listen to the voice really like engine knock, but the power of the engine were not affected by any effect, accelerate the engine sound all normal. Combined with the failure analysis, the engine at 2,3 gear acceleration can send different sound There are several reasons:

(1) variable valve timing mechanism fault. Because in the 2,3 gear acceleration engine has entered the medium-load conditions, according to the characteristics of the engine, the valve timing should have entered the adjustment position, adjust the mode by changing the position of the chain tensioner to achieve. According Launch X431 V Pro or Launch X431 IV GX4 tool check, found that when the chain camshaft adjustment, if the chain tensioner lack of strength will make the chain in a relaxed state in the adjustment process and beep.

(2) Since the engine knock sound is generated. That there are several possibilities: â‘  fuel octane low lead to knock. This car's engine may be use 93 unleaded gasoline, it is best to use 95 unleaded gasoline, otherwise it will produce detonation. â‘¡ ignition timing is premature detonation. To further understand the failure, you can use Autel MaxiScan MS509 or Autel MaxiScan VAG405 tools to detect, which can quickly check out the car parts problem.

Source: http://www.focalobd.com/blog/audi-a6-engine-abnormal-sound-fault-analysis/

Posted by: obdtools at 03:27 AM | No Comments | Add Comment
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Speaking of automotive brake systems, we naturally think of the importance of the brake pads, it has been a normal reaction to contact with safety, another key element for automobile brake system -- brake oil , people don't really care, but don't know it is a key link in automobile braking systems, the relationship between the owners of personal safety. According to Transportation Department data shows that If all people use the brake oil, every year to reduce the 10% traffic accident, how to buy high-quality brake oil, need to use Auto Diagnostic Tool.

Currently on the market the brake oil is divided into three types: type of alcohol, mineral oil and synthetic type. Alcohol and mineral oil has been eliminated, market of brake oil for the synthesis of type, common brake oil have DOT3, DOT4, DOT5, most of the cars used are DOT4 brake oil.

How to buy brake oil?
1, different types and different brands of brake oil do not mix, due to the different synthetic ingredients, mixing brake fluid can cause brake oil index declined, If you use the Launch Creader VII or Launch X431 Creader VIII tool, it's easy to see the change.

2, the normal running of the vehicle, If the brake suddenly light or suddenly heavy, to the timely replacement of brake oil, before replacement, first with alcohol will brake system clean.

3, when the brake oil sucked moisture or impurities, should be replaced or the filter, otherwise it will cause the brake pressure insufficiency, the effect of the brake. There are some places the weather is wet, this is particularly important.

4. Vehicle braking wandering, to the braking system to conduct a comprehensive inspection. If discover wheel cylinder cup expansion is too large, brake oil quality there could be a problem. At this time should choose quality good brake fluid replacement, replace the leather bow at the same time.

Clean, high-quality brake oil is the basic of good work condition of safety and brake system. Vehicle on 40,000 km or brake oil continuously used for more than two years, then the brake oil needs to be replaced. When choosing the brake oil to note that if the use of inferior brake oil, brake pump will rot burning Pusey, use Autel MaxiTPMS TS501 or Autel MaxiTPMS TS601 tool to check the brake pump to see whether the work is stable, will also have an impact on the brake effect, so if the brake oil lack, it is best to specialized shops to buy the original car brake oil, the original brake oil use effect is very good, can also prolong the service life of the system of brake.

Source: http://www.focalobd.com/blog/how-to-buy-high-quality-car-brake-oil/

Posted by: obdtools at 03:38 AM | No Comments | Add Comment
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Although fuel additive is not accepted by everyone, however, we already know a lot of additives, many owners already choose to use. Fuel additives although only as a supplement to fuel oil, but its performance can not ignore, you can use the OBD Diagnostic Tool to check can be found, the use of fuel additives and does not use fuel additives, there is a very big difference, how to choose the high quality of the fuel additive, or To everyone carefully distinguished.

In choose the fuel additive when there are four suggestions: First, to see whether the product has quality certification; Second is to see whether the company passed the quality management system certification; again to look formal channels; and finally to listen to the experts views.

Choose high-quality fuel additives, not only can play the efficacy of reducing fuel consumption, as well as maintenance of the engine, remove carbon, environmental protection and other effects. Petroleum Product Quality Supervision and Inspection Center, said fuel additives surface is for the owners to save money, is actually a contribution to environmental protection.

Poor quality of fuel additives is counterproductive, not only will not reduce fuel consumption, but also damage to the engine, reducing engine life. "World Fuel specifications" clearly against all additive metal element, but present many additives contain metallic powder, causing damage to car parts, you can use the Launch X431 CResetter II or Launch X431 Cresetter tool is very easy to check auto parts issue.

China is currently no national standards or industry standards of fuel additives, are their standard execution of various enterprises, only a few companies with reference to American standards of corporate standards, production of product quality can only be guaranteed. Usually see in the market are more, mostly from foreign brands, if you still have doubts, you can get two kinds of fuel additives for comparison, then use Autel MaxiScan MS509 or XTOOL VAG401 tool check the car's performance to see if there will be differences.

Source: http://www.focalobd.com/blog/how-to-choose-the-high-quality-of-the-fuel-additive/

Posted by: obdtools at 03:37 AM | No Comments | Add Comment
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Auto Body slight jitter situation many owners often encountered. If the owners to start the vehicle or the vehicle is not suspended off the engine case, if you find a slight shake the car body, it may mean that the following three conditions exist vehicle:

If the driving process, found the body there is a slight jitter or offsets, it is generally caused by tire failure. First, the tire may be poor balance, you need to go as soon as to the car repair shop to do the wheel alignment and balancing, there is a simple way, using Auto Diagnostic Tool to do a correction.

Another condition is more serious, possibly because rim distortion, which requires owners to go to a professional repair shop to check. This situation generally occurs in the use of five-year vehicles. General motors to replace the new tires, new rims when to do a tire balance, otherwise the weight does not mean when the steering wheel is prone to jitter phenomenon. The body jitter can have an effect on driving comfort and control judgment. There is also a simpler way, using the Launch X431 GDS or Launch X-431 PAD tool to check whether the tire is balanced, if the balance, is not required to the repair shop.

The third case is because the transmission shaft deformation caused by the imbalance, it typically occurs in the chassis of the car had a collision.

If there is to start car the body shaking, the fault is for equipment manual transmission vehicles, such as: from static started and slowly lift the clutch pedal, the vehicle vibration. This is due to a clutch three piece suit (flywheel, clutch plate and pressure plate) the irregular wear, in which one or a few pieces to produce deflection caused by, in the bonding process, clutch disc can not be smoothly joined, but a joint, a little and release of the engine power is just beginning to transfer, and suddenly slipped, replace the clutch three sets of damage, in using Autel Maxidiag Elite MD701 or Autel AutoLink AL609 tool for the detection of gearbox is working properly.

Source: http://www.focalobd.com/blog/what-are-the-reasons-for-auto-body-shake/

Posted by: obdtools at 03:37 AM | No Comments | Add Comment
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Honda automobile air conditioning refrigeration failure phenomenon. After filling refrigerant. Open air conditioning, on the electromagnetic clutch compressor suction no, idle speed is high and low (850 r/min to 1100 r/min), the fan rotation is normal, but poor refrigeration, you can see the real-time data by OBD Diagnostic Tool.

Detection of electromagnetic clutch of the compressor line, the voltage is normal. After the failure of the circuit is determined, the high and low pressure port of the air conditioning system is measured by using multi meter.. As a result, the pressure at high and low pressure is abnormal, and the pressure is high and low, and under the Launch X431 Diagun III or Xtool PS2 tool checked, the engine was found to rotate abnormally. Ask the driver, there is no phenomenon before the refrigerant filled, and then suspect that there may be too many refrigerants.

Gradually sucked out of a portion of the refrigerant, the engine speed changes observed in the tool to see a few bubble, accelerate to 1700 r/min when bubbles disappear, troubleshooting.

When the air conditioning system of the refrigerant injected too much, it will reduce the flow of refrigerant in the system performance, causing the compressor malfunction, poor refrigeration, the engine idle speed instability, You can check with the Autel MaxiSys MS908 or XTOOL VAG401 tool before you inject the refrigerant, and it will remind you how many refrigerants you should add.

Source: http://www.focalobd.com/blog/honda-car-air-conditioning-refrigeration-malfunction-maintenance/

Posted by: obdtools at 03:08 AM | No Comments | Add Comment
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