What's wrong with the car's acceleration jitter and lack of cylinder?

The reasons for acceleration and vibration of automobiles are: 1. The main cause of failure is the increase of carbon deposition in throttle, air intake and valve. When the car is cold, it will absorb some gasoline. When the car is hot, the gasoline volatilizes and the engine runs at idle speed, which will cause the mixture to be too rich and lead to the unstable idle speed of the hot car. 2. So you should not only check the throttle and idle motor, but also check whether there is too much carbon deposit and dirt at the air inlet. If it is too much, the cross-sectional area of the air passage will change; 3. The control unit can't accurately control the idle air intake, which leads to abnormal combustion of the mixed gas due to too rich or too thin, leading to engine jitter. At the same time, pay attention to check whether the carbon canister is faulty.