Is it normal for the car to idle in place and shake slightly?

The car idling in place, slight shaking, abnormal shaking.

The most common cause of car shake is a dirty throttle or excessive carbon build-up in the fuel injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the cold start injector will be absorbed by the carbon deposit, resulting in the cold start mixture 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 started, and the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the vacuum suction of the engine after the car, and the mixture becomes thick, and the combustible mixture of the engine is dilute and thick, causing idle shaking after cold start.

There are mainly the following reasons for the body shake at idle:

1. 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 flashing condition is not good, which will also lead to this kind of failure. The solution is to check whether the spark plug has too much carbon and replace the spark plug;

2. The oil pressure is unstable, if you have cleaned the engine carbon deposit, washed the throttle, changed the oil pad 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 value is wrong and the work is poor, the body shakes. The solution is to check the oil pressure and replace the parts if necessary;

3. The aging of engine parts and the shaking of the car are also related to the 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.

1. The lack of cylinders in the engine, the lack of cylinders in the engine mainly refers to the fact that the engine has one or more cylinders that are not working normally, which is generally manifested as: the exhaust gas flow discharged by the car has obvious intermittent intermittentness, and the exhaust pipe shakes violently, and the shaking of the engine can be clearly felt, sometimes accompanied by a sudden sound. This is mostly related to ignition coil failure;

2. Carbon deposition problems include cylinder carbon deposition, throttle carbon deposition, spark plug carbon deposition, intake carbon deposition, etc., these positions are just closely related to the power output of the engine, when the carbon deposition inside the engine is excessive, the ignition energy of the car is reduced, and the air intake efficiency decreases, which eventually leads to the engine shaking, acceleration weakness symptoms;

3. Fuel system failure, adding inappropriate fuel labels (for example, No. 93 to No. 90), resulting in a decrease in the output power of the car and a decrease in power; Or due to the blockage of the vent of the fuel tank cover, the fuel tank switch, the fuel filter and the oil pipe between the fuel tank and the carburetor are partially blocked, which cannot meet the required oil volume, resulting in the mixture being too thin and the engine shaking;

4. Air intake system failure, air is one of the power of the engine, if the air filter is not cleaned in time for a long time, the lack of air volume will cause the combustible mixture to be too thick, so that the engine power decreases; In the case of a vehicle with a turbocharger, a failure of the supercharger can also cause the engine to shake during acceleration.

It is normal for a manual transmission to idle in place and slightly shake in place, and it is abnormal for an automatic transmission to idle in place.

If it is a manual transmission, the clutch will be in a semi-linkage state when starting, so it will cause a certain degree of slight shaking, which is normal. If it is an automatic car, the pause of the gearbox gear meshing with the propeller shaft during the start will also bring a slight shake, and if this situation is very frequent, you need to go to the 4S store for professional inspection.

There is also a situation where the clutch plate of the vehicle is worn too badly, and there is a slight shake in the first gear of the car, especially in manual transmission models.

What to do if the engine is shaking at idle.

The most common reason for the spark plug, throttle valve is too dirty or the fuel injector is too much carbon, the gear starts, cold starts, the three-way catalytic temperature is not enough, and the engine carbon deposits are serious The most common reasons for the car to shake, because the gasoline adsorbed on the carbon deposits after the car is sucked into the cylinder by the engine for combustion, and the combustible mixture of the engine is dilute and thick, resulting in idle shaking after cold start. Solution: Siyoupu cleans the oil circuit and checks whether the idle motor has carbon deposits and should be cleaned.

Idling in place? You can use 2 Siyoupu cleaning agents, which are commonly used by PetroChina to clean oil storage tanks, and the refueling tank can be used to directly clean the oil impurities, gums, and moisture. My colleague can use it, and his car is also continuously idling and shaking, and now it is very smooth.

Idling in place? The ratio of fuel is that stir-frying cannot be completed 100% and is the same every time. Therefore, the oil point should not also be cleaned regularly. You can use Si Youpu cleaning agent, which may be a cleaning agent of the national VI standard.

Idling in place? Clean the oil circuit, the oil circuit is dirty after a long time, and it needs to be cleaned. When it's clean, it's burning, and when it's gone. 5000 kilometers can be used once with a spectrum of fuel additives refueling tank.

As long as the water temperature is normal, it's fine. No problem, it was cool in the morning or for a long time to park the car, and the engine water temperature did not reach the normal temperature. The engine computer adjusts the supply of mixed gas thickness, coupled with the small amount of oil supply, can not meet the lubrication requirements, so the speed is high, the sound is loud or the work is unstable and the exhaust smell is large, as the engine gradually rises to the Naki temperature, it slowly returns to the normal idle speed.

There are three main reasons for the slight vibration of the car idling in place, the first may be caused by the aging of the engine components, the second may be the failure of the ignition system, and the third may be the serious carbon situation on the engine.

The engine foot of the car is the shock absorption system of the engine, which is mainly responsible for absorbing the subtle shake caused by the engine when it is running, and if there is a problem with the engine foot, these shakes will be transmitted to the steering wheel and cab. Therefore, when the engine foot of the car is aging, it will cause shaking when idling in place.

When the ignition system fails, the spark plug "jumps" phenomenon and the car idles and shakes, so you should go to the 4S shop or repair shop for maintenance in time. Because if it is not solved in time, there will be increased fuel consumption, ignition difficulties, driving weakness and other phenomena.

If the throttle of the car is too dirty or the fuel injector has too much carbon deposit, it will also cause the car to idle and shake, so you need to clean the oil circuit, usually use better quality oil when refueling, or add some fuel cleaning agent.

Photo by Brother Choosing a Car) 2019