What to do if the engine is shaking at idle? What to do if a car engine idles and shakes?

There are several reasons for engine shake:

1. The engine has serious carbon deposits, and the most common car with serious shake is that the fuel injector throttle valve is too dirty or too much carbon;

2. Ignition system problems, check the working conditions of spark plugs, high-voltage wires and ignition coils;

3. The oil pressure is unstable, if the first pressure of the pump is abnormal or the error and poor work of the inlet pressure sensor will cause the body to shake;

4. Aging of engine parts; Excessive carbon deposits in engine emissions absorb carbon from the gasoline of the cold-start injector, which leads to a dilute cold-start mixture and difficulty 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.

Solution; 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 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 factory 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. 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.

There are many reasons for the idle shiver of the car, such as the idle motor is not clean, the throttle is not clean, the spark plug is ablated or there is carbon deposit, the cylinder line is leaking, the air intake system or oil supply system is not smooth, and so on. It is recommended to use the automotive computer detector to check the engine fault code and dynamic data flow, as well as the working conditions of the components and each cylinder, and then analyze the fault content according to the detected fault, which places are needed.

What to do if the engine is shaking at idle.

There are many reasons for the idle jitter of the car, the main one may be that the spark plug needs to be replaced at the end of the cycle, and you can check it.

The automobile engine is the device that provides power for the car, is the heart of the car, and determines the power, economy, stability and environmental protection of the car. According to different power**, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors, and hybrids.

If it is an old car to check the engine bracket glue, if it is a new car kilometers only within 2 30,000 kilometers, just clean the oil circuit, after washing the oil circuit jitter is greatly reduced, the basic feeling is not obvious. I asked the shop, the reason is that the engine compression ratio is high, the after-ignition point of the fuel is advanced, and the time of early fire and after-fire is balanced after cleaning the oil circuit, that is, the chance of deflagration is reduced, and the evaporation performance of the fuel is improved, and the reduction of residual exhaust gas will greatly reduce engine shake. I had been mistaken for engine quality before, but now it seems that it really isn't.

You can learn from it and use additives such as Siyoupu fuel cleaner to complete the cleaning.

Hello, this is generally caused by the lack of cylinders in the engine, or the vacuum leakage. If it is caused by too low idle speed, the throttle needs to be cleaned. If the cylinder is missing, the spark plug ignition coil needs to be replaced.

Go to the repair shop as soon as possible and have it checked. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, engine idle shake is generally caused by the throttle is too dirty, it is recommended that you go to the repair shop to clean the throttle.

Thank you for using, I hope my answer can help you, if it can help you it would be great, if there is anything you don't understand or don't understand, you can continue to ask, I will definitely try my best to serve you! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, the engine is leaking, the throttle is dirty, but the engine cylinder will cause this situation, you need to check it in detail. Have a great day! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

A non-negligible cause is "carbon deposition", which will 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 serious carbon deposition in the combustion chamber will also cause cylinder detonation, and there will be a sound of low-speed acceleration, which will cause damage to the piston and crankshaft, thereby seriously affecting 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.

What to do if a car engine idles and shakes? There are generally several situations in engine fault diagnosis, the most common reason for serious engine carbon deposition causes car shaking, the engine has a general cleaning agent, which can remove carbon deposition and dismantle the engine oil to clean carbon sludge, which is very convenient to use, suspension decomposition does not block, and at the same time it is miscible with oil and will not lead to delamination, better and safer cleaning of your engine.

What to do if a car engine idles and shakes? The number of kilometers is very small, it is not a problem with accessories, but the oil road is dirty. Wash down.

The gas station cleans the oil tank once in February, and if our private car is never cleaned, it must be a problem with the oil. Dirty oil, impurities and oil are added to the car. The oil with more impurities and adhesive tape will burn poorly, and the shaking, long-term idling and shaking will affect the high temperature of the winter work, and the oil will be burned in serious cases.

Clean the oil circuit with a company with additives, and you can drive a fuel normally. You can learn from it. This is not necessarily carbon deposit, poor combustion does not mean that it is carbon deposit, and the moisture of ethanol will also affect the combustion jitter.

The air filter is dirty, clogged, and not replaced in a timely manner, or the high-voltage line is open and affects ignition and causes engine shake. Engine shake caused by spark plugs not being replaced in time or low fuel pressure. Dirty throttle valves, clogged injectors, or low cylinder pressure can cause engine jolting.

There are many causes of idle jitter, but the most common ones are:

Circuit system. The throttle body is too dirty or malfunctioning itself;

Poor ignition coil contact or conduction (depending on the discharge);

Caused by abnormal ignition lines;

One or more ignition coils are faulty, burned, etc. (according to emissions);

Abnormal stepper motor;

Spark plug failure: such as the wrong calorific value, wrong model or need to be replaced;

The relevant control circuit is abnormal;

The anti-theft system is abnormal;

Fuel quality or substandard. For example, the quality of the fuel used, the heavy water content of the fuel, the large number of impurities, etc., lead to abnormal shaking of the engine working conditions.

Failure of oil pressure, abnormal oil pressure;

The electronic oil pump is faulty, the conduction is poor or the heating is abnormal;

Oil pipeline impurities are blocked; For example, the gasoline filter element is clogged or there are many foreign body impurities, the oil supply is not smooth, and the fuel pipeline is blocked, cracked, rusted or deformed (due to scratches or collisions, etc.).

Fuel filter failures, such as clogging or not being replaced for a long time;

Injector failures, such as poor atomization, clogging, or quality reasons;

Fuel rail pressure sensor failure;

Excessive carbon deposits in the engine of the engine;

Improper (or overdue) internal wear and tear or maintenance, etc.;

abnormal cylinder pressure; Incorrect selection of engine oil or viscosity that does not meet the standard;

wear or damage to individual components;

Valve abnormalities, such as stuck, air leakage, etc.

The water temperature is abnormal, and there is a fault in the water temperature sensor circuit, the sensor itself, etc.

The specific fault is subject to the actual vehicle test results, and the fault should be repaired in time to ensure that the fault can be solved in time and not spread, and to ensure the normal operation of the car under various working conditions.

1. First of all, we should look at the frequency and vibration of the steering wheel shake when idling, if it is only a slight shake, then it is not a big problem. Many cars will have a certain vibration when idling, and the resonance frequency of the whole vehicle is close to the resonance frequency of the engine at idling, which is difficult to improve;

2. If you don't feel obvious vibration when you drive it, there is no problem. However, if there is a significant vibration during the driving of the vehicle, it needs to be checked in a targeted manner. It may be a failure caused by the unstable idle speed caused by the dirty throttle valve, and the ignition will be turned off in serious cases, and there will be no shaking phenomenon when the idle speed is high

3. The idling speed of the car refers to a working condition. When the engine is idling, it is called idling, that is, the car is in neutral gear. The rotational speed at which the engine is idling is known as the idle speed.

The idle speed can be adjusted by adjusting the damper size, etc. Idle speed is the engine"Work is not contributive"；

4. When the engine is running, if the accelerator pedal is completely relaxed, the engine will be in idle state. When adjusting the idle speed, the speed should not be high or low, otherwise it will cause early wear on the engine.

There are four main causes of body shake at idle:

1.The engine has serious carbon deposits.

The most common cause of car shake is a dirty throttle or excessive carbon build-up in the fuel injector. 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.

In addition, the lower the temperature, the greater the amount of oil required for the cold start, and the more the presence of carbon deposits will affect the smooth cold start. The solution is to clean the oil circuit and check whether the idle motor has carbon deposits that should be cleaned.

2.Problems with the ignition system.

Check the working condition of the spark plug, high-voltage wire and ignition coil, the ignition system is not working well, and the spark plug is not in good condition and the spark plug is not in good condition. The solution is to check the spark plug for excessive carbon accumulation and replace the spark plug.

3.The oil pressure is unstable.

If you have cleaned the engine charcoal, washed the throttle, changed the oil cushion and spark plug, etc., and still found that the body shakes when idling, it is recommended that you 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 abnormal or the intake pressure sensor is wrong and the work is not good, the body shakes will be caused by abnormal oil pump pressure pressure or wrong intake pressure sensor and poor work. The solution is to check the oil pressure and replace the parts if necessary.

4.Aging of engine components.

Car jitter is also associated with aging of the engine feet. The engine foot is actually the suspension system of the engine, and the engine foot is responsible for absorbing the subtle shake of the engine when it is running, and if there is a problem with the engine foot, these vibrations will be transmitted to the steering wheel and cab, causing shaking when idling.

In the past, there was a saying that the engine was afraid of shaking, and the chassis was afraid of sounding. Because there are many factors that cause engine shake, it is not easy to judge. The chassis noise is because it only rings when driving, and people can't run with the vehicle to listen to the abnormal sound.

But in fact, as long as you really understand the structure of the vehicle, it will not be so difficult. First of all, let's talk about the problem of engine shaking. Generally, there are only a few points that are affected by the current vehicle, and the second is whether the throttle is dirty, which is easy to check.

If you find that the dirt is cleaned, you can use a special computer to match it after the cleaning is completed. The second is the fuel injection head, the poor atomization of the fuel injection head will form an uneven mixture, the combustion is unstable, and there will be a sense of vibration, so clean the fuel injection head, and the third is to check the cremation plug to see whether the ignition performance is the same. Then check the air intake system for air leaks, if it is convenient, you can consider measuring the cylinder pressure, and you will know why the engine is shaking after completing these tasks.

Most of them have solved the jitter problem before you finish all this work.