FAW Volkswagen Magotan 1 8T idle speed fluctuates up and down

The main reasons for the unstable idling speed of Magotan:

1.Serious engine carbon deposits: Cars always have the problem of carbon deposits, including cylinder carbon deposits, throttle carbon deposits, spark plug carbon deposits, intake carbon deposits, etc.

When the engine has too much carbon deposit, it will affect the ignition energy, air intake efficiency and air-fuel ratio of the car, resulting in the unstable power output of the car, and the phenomenon of idle speed and acceleration jitter appears.

2.Unstable oil pressure: If you have cleaned the engine carbon deposits, cleaned the throttle, replaced the oil gasket and spark plug, etc.

And when idling, you still find that the body shakes, it is recommended that you go to the 4S shop to check whether the oil supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is abnormal, or the intake pressure sensor value is wrong, and the work is not good, it will cause the body to shake.

3.Engine cylinder shortage: Engine cylinder deficiency mainly refers to the engine one or more cylinders are not working properly, which is generally manifested as:

The exhaust fumes coming out of the car are obviously intermittent, and the exhaust pipe shakes violently, and the engine shake can be clearly felt, sometimes accompanied by abnormal noises. This is mostly related to ignition coil failure.

4.Aging of engine parts: Shake in the car is also associated with the aging of the engine feet (also known as claw pads).

The engine foot is actually the shock absorber system of the engine. The engine feet are responsible for absorbing slight vibrations when the engine is running. If there is a problem with the engine base, these vibrations can be transmitted to the steering wheel and cab, causing vibrations at idle.

Solution; The best way is to clean the oil circuit, clean it regularly, and use PNF fuel additives to solve the above problems caused by carbon deposits. The fuel quality is not very good or the initial fuel of the new car is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and cause no good fuel to participate in combustion in the later stage, and the carbon deposition exceeds the standard, which is especially common for China VI vehicles. We can only gradually alleviate most of the problems by maintaining clean oil circuits.

The reasons for the severe shaking of the car are as follows:

1. Excessive carbon deposition in the throttle, fuel injector, and intake duct may lead to serious start-up shaking of the car.

2. There is too much carbon deposition inside the engine, and the gasoline sprayed by the starting fuel injection head will be absorbed by a large amount of carbon deposition, resulting in too thin the starting mixture, which makes the starting shake greatly.

3. Mechanical failures such as ignition coils, spark plugs, fuel injectors, etc., resulting in lack of cylinders; The oil pressure or cylinder pressure is low, resulting in insufficient power, etc., which causes the car to shake greatly when starting.

4. The oxidation or grade of the engine oil is low, mainly due to poor low-temperature fluidity, and the cold start protection of the engine is not in place, which makes the car shake badly when starting.

Specific solutions to idle jitter:

1. The engine has serious carbon deposits. The most common cause of idle judder is excessive carbon build-up on the throttle or injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the fuel injector during cold start will be absorbed by the carbon deposit, resulting in a mixture that is too thin and making it difficult to start.

After landing, the gasoline adsorbed on the carbon deposits will be sucked into the cylinder by the engine and burned, which will thicken the mixture. The mixture is sometimes dilute and sometimes thick, which will cause idle jitter after cold start. The lower the temperature, the greater the amount of oil required for cold starts, and the more the presence of carbon deposits affects cold starts.

The solution is to clean the carbon deposits at the throttle and injector.

2. Poor ignition system and poor ignition of spark plugs will also lead to engine idling and shaking. If there is a problem, check if the ignition system is faulty and if there is too much carbon deposited in the spark plug.

3. The oil pressure is unstable. If you have cleaned the engine carbon deposits, cleaned the throttle valve or replaced the spark plug, and there is still the problem of body shaking when idling, it is recommended to go to the 4S shop to check whether the fuel supply pressure and intake pressure sensor are normal. If the oil pump supply pressure is not normal or the intake pressure sensor is incorrect, it can also cause the body to shake when idling.

4. The best way is to clean the oil circuit, clean it regularly, there is no specific experience in the research and development parameters of the clean engine from the beginning of the new car, coupled with the continuous improvement of emission standards, can not adapt to the change of fuel, all manufacturers of the engine are unable to solve this jitter problem in the short term, plus the fuel quality is not very good or the initial fuel of the new car is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and lead to no good fuel can participate in combustion in the later stage. The occurrence of excessive carbon deposits is especially common for China VI vehicles. We can only gradually alleviate most of the problems by maintaining clean oil circuits. The use of PNF dope fuel additives can solve the problems caused by carbon deposition.

FAW-Volkswagen Magotan idling.

What is the reason for the high and low new car, it shakes at idle, it can be said that it is not good to burn, and it cannot be said that it is carbon deposit.

Poor combustion leads to carbon deposition in the long term. Poor combustion is directly related to the oil circuit. Carbon deposition does not mean that it will shake, but it will shake if it is not burned well.

You can clean the oil road, don't look at your less kilometers on the oil road will be fine, this is not your decision, is the fuel company's excellent product decision. After encountering, the new car should pay attention to the moisture problem of the fuel tank and the impurities and excellent products of the oil circuit, and can be cleaned with Si Youpu additives to not let the problem continue and cause greater losses.

If there is a problem with the oxygen sensor, it can be found out with a computer. It is recommended that you go to the 4S shop to check, including spark plugs, throttle valves, and if the kilometers are large, you may also want to see if the intake manifold has serious carbon deposits. However, occasional jitter should not be a problem with the timing belt.

Idle instability is manifested as engine shaking and uneven speed when idling.

The reasons are: blockage of the idle air measuring hole, poor working of the idle device, weak sparks of individual cylinder spark plugs, poor sealing of individual valves, air leakage of the intake manifold, too early or late ignition time, improper idle speed adjustment, etc.

When the engine idle speed is unstable, the idle speed should be adjusted first, if the fault can not be eliminated after the idle speed adjustment, the idle speed measuring hole and the idle air measuring hole should be checked whether it is blocked, if the measuring hole is blocked, it can be cleaned with gasoline or acetone and blown through with compressed air; If the measuring hole is not blocked, the engine speed should be stabilized at a certain speed, and whether there is air leakage in the intake manifold or carburetor or the lower gasket. If the idle speed is unstable and accompanied by the decrease of engine power, the working condition of the spark plug, the sealing performance of the valve and the ignition time should be further checked, and the maintenance and adjustment should be carried out if necessary.

Clean the throttle and check the ignition coil and spark plug.

It's in the wrong place, and the spark plugs are changed, which is very important.

Hello friends, There are many reasons for idle jitter, roughly as follows: 1Whether the spark plug is damaged or not needs to be checked; 2.

Whether the starting motor is abnormal, the engine speed, and the idle speed is abnormal; 3.Whether the air intake system is abnormal and the air path is not smooth; 4.Start the ruler machine to deposit carbon, clean the lower throttle, grease nozzle, etc.; 5.

The ignition system is abnormal, the battery is lost, etc., and it needs to be checked; 6.Oil products, oil road problems, after opening this tank of oil, it is recommended to go to a regular gas station to refuel; Friends check the next few items of Bi Ze Ku as above;

Hello, there are many reasons why Magotan idle jitter.

First, the spark plug gap of a certain cylinder is too large, and the ignition is not good.

Second, the ignition coil has leakage or poor work.

Thirdly, the engine has too much carbon deposit. The cavity is filial, the valve is not closed tightly, and the air leakage is shaking.

The fourth throttle valve is too dirty, and the air intake is insufficient.

I hope it can help you, and I wish you a happy car! [Car questions, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello dear! Clean the throttle and injector and give it a try! Hope it helps, too! Thank you!

The EGR valve on the engine may be broken.

Hello, check whether the oil dipstick and oil cap are in place, and plug the small hole of the oil-water separator with your hands.

Cleaning carbon deposits in the throttle cylinder.

The Magotan engine idling shakes badly, what is the reason The Malibu engine has a large compression ratio, and the team has high combustion requirements, if the fuel is not too good or the oil circuit is dirty, it must be cleaned. Sometimes, ethanol fuel will volatilize water in the fuel tank because of the 9-day deterioration period, and it will not burn well and shake after being driven into the combustion chamber. New cars will also encounter these problems, there is a gas station is also regularly clean the underground oil tank, if yo some deteriorated fuel input to the fuel tank is also inevitable, the previous new Tucson engine 3000 kilometers also oil shaking, can not check out the problem, and then a master added 2 Si Youpu to the fuel tank After running the third tank of oil trucks will not shake at all.

Carbon deposits can cause insufficient combustion of gasoline and cause the engine to shake. The impact of engine carbon deposition on the car is quite large, first of all, to reduce the engine power, that is, to make the power output uneven and gradually decay, in other words, more and more powerless. The second is to increase fuel consumption and increase your financial burden.

The third is the difficulty of cold start, that is, the difficulty of ignition, it is not easy to get on the car, and finally the carbon deposit in the combustion chamber is strict, and a heavy one will also cause cylinder detonation, and there will be a sound of low-speed acceleration, which will cause damage to the piston and crankshaft, and cause high temperature of the engine, which will seriously affect the safety of the car. Then there is the excessive discharge, which not only fails the annual inspection and inspection, but also directly aggravates the harm of polluting the environment.

There is another reason: the throttle valve is faulty. Both of these problems can cause engine shake and unstable speed.

There may be a lack of cylinders, spark plugs, high-voltage lines, and oil!

Wash the throttle and intake tract for carbon deposits.

What's going on with Magotan starting and low idle jitter Indeed, the phenomenon is similar to yours before, but it also needs to shake for a while after starting to ease down, and the red light of hot car idling will also shake a little. The kilometers are not many and I can't find other problems, and then another car in the family uses Si Youpu to clean the oil road without shaking. I also tried, and after running a tank of fuel, it basically didn't shake.

Unstable idling can be due to the following reasons:

1. The engine has serious carbon deposits.

When the carbon deposit inside the engine is too much, the gasoline sprayed out by the cold start fuel injection head will be absorbed by the carbon deposit in large quantities, resulting in the mixture of cold start being too thin, making it difficult to start, in this case, only when the gasoline absorbed by the carbon deposit is saturated, it is easy to get on the car, and the gasoline adsorbed on the carbon deposit after the car will be sucked into the cylinder by the vacuum suction of the engine for combustion, and the mixture becomes thick, and the combustible mixture of the engine is dilute and thick, causing idle shaking after cold start.

2. The throttle and air intake tract accumulate too much dirt.

The excessive carbon and dirt deposits in the throttle valve and the surrounding air intake, and the change in the cross-sectional area of the air channel, make the control unit unable to accurately control the idle air intake, resulting in the mixture being too thick or too thin, and making the combustion abnormal.

3. The spark plug spark caused by individual spark plug failure is too weak.

Spark plugs can also build up carbon, which can be cleaned to restore spark plug activity, but some spark plugs are nearing the end of their useful life and their performance will be reduced. The spark plug spark on the individual cylinder is weak, which will affect the performance of the car, and the failure of the spark plug will make the car appear "lack of fire" symptoms, but the spark plug of individual cylinders will have a slight fault and the idle instability will occur.

4. Fuel pressure failure.

If the oil pressure is too low, the atomization state of the fuel injected from the injector is poor or the fuel injected is linear, and only oil droplets are sprayed in serious cases, and the amount of fuel injected is reduced to make the mixture too thin; The oil pressure is too high, and the actual fuel injection volume increases, making the mixture too concentrated.

5. Failure of various parts.

Leakage of intake manifold or various valves, failure of fuel pressure, low oil pressure, failure of ignition system, etc., can also cause engine idling instability.

Volkswagen Magotan idle unstable, you can try the following methods to troubleshoot:

1. The idle switch is not closed.

Diagnostic method: Turn on the air conditioner and turn on the steering wheel when idling. The failure to increase the engine speed proves to be the fault.

Troubleshooting: Adjust, repair, or replace the throttle valve position sensor.

2. The idle control valve (ISC) is cautious.

Diagnostic method: Check the actuation sound of the idle control valve, if there is no actuation sound, the idle control valve is faulty.

Troubleshooting: Clean or change the idle control valve, and use a special decoder to set the idle speed basically.

3. Air leakage in the air intake pipeline.

Diagnostic Method: If you hear a snorting sound of a leak in the intake pipe, it is evidence of a leak in the air intake system.

Troubleshooting: Find leaks, reseal or replace phase parts.

4. The injector is dripping or clogged.

Diagnostic method: Use a stethoscope to check whether the injector emits a "wide hall and click" actuation sound or measure the fuel injection volume of the injector, if the injector does not make a sound or the fuel injection volume exceeds the standard, the injector is faulty.

Troubleshooting: Clean the injectors, check the amount of fuel injected into each injector and confirm that there is no clogging or dripping.

Summary. Hello oh dear, the reasons for the low idle speed of 11 years of Magotan are: 1. Throttle oil storage or throttle carbon deposit, 2. The inlet tract is too dirty, 3. The spark plug spark caused by individual spark plug failure is too weak, 4. The idle control valve is faulty, 5. The injector is poorly atomized or blocked, 6. The viscosity of the oil changes.

<> 11 years Magotan idle speed low.

Hello oh dear, the reasons for the low idle speed of 11 years of Magotan are: 1. Throttle oil storage or throttle carbon deposit, 2. The intake tract is too dirty, 3. The spark of the Spark Song's hood plug caused by the failure of individual spark plugs in the nuclear shed is too weak, 4. The idle control valve is faulty, 5. The injector is poorly atomized or blocked, and 6. The viscosity of the oil changes. <>

<> dear, happy new year, the solution to the low idle speed of the car is to roll the mu smile: 1. Check whether the throttle has oil or carbon deposits, 2. Clean the intake tract, withstand the belt 3, check the spark plug of the large working condition, 4. Check whether the idle control valve is faulty, 5. Check whether there is a problem with the fuel injector, 6. Change the oil in time. <>

<> kiss, the hazards of idling to the car are: 1. The engine carbon deposition increases, 2. The service life of the engine is shortened, 3. The concentration of the engine mixture is too high, and it is easy to burn out the three-way catalytic Chazhou device, 4. The vehicle's defeat shelter device will become loose, which is easy to cause accidents, and 5. The exhaust emissions in the vehicle cylinder will increase. [Big Red Trail Flushing] <>