What's wrong with atsl idling for a while?

Due to the congenital defects of longitudinal engines, the idle speed is generally low, and there will be bursts of * * * vibration. Turn on the air conditioner and install the engine, and it will be solved.

If the car body is found to be slightly shaking or running off during driving, it is usually caused by tires. First of all, it may be that the wheel balance is not good. The owner needs to do a four-wheel positioning and dynamic balance as soon as possible, and a tire dynamic balance if the vehicle does not run off.

Other reasons for failure:

The most common cause of automobile jitter is that the throttle valve is too dirty or the fuel injector has too much carbon deposit. When there is too much carbon deposit in the engine, the gasoline sprayed by the fuel injection head will be absorbed by the carbon deposit during the cold start, which leads to the lean mixture during the cold start and makes it difficult to start. In this case, it is easy to hit the car only if the gasoline absorbed by carbon deposits reaches saturation.

After landing, the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the vacuum suction of the engine for combustion, and the mixture will become thick, and the combustible mixture of the engine will be diluted and concentrated, resulting in idling jitter after cold start. The lower the temperature, the more oil is needed for cold start, and the existence of carbon deposit will affect the smooth start.

Refer to the above? Baidu encyclopedia-idle jitter