What is the reason for the engine jitter of Volkswagen Touran?

You want to know "what is the reason for the engine jitter of Volkswagen Touran?" The relevant contents are as follows:

The reasons for the engine jitter of Volkswagen Touran are as follows:

1, the engine has a serious carbon deposit, and the most common reason for car 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 cold start fuel injection head will be absorbed by the carbon deposit;

2. Engine cylinder shortage: Engine cylinder shortage mainly refers to the abnormal operation of one or more cylinders of the engine, which is manifested as: the exhaust gas flow discharged by the automobile is obviously intermittent, the exhaust pipe is seriously shaken, and the engine jitter can be obviously felt, sometimes accompanied by sudden noise. This is mostly related to the failure of ignition coil;

3. The engine combustible mixture is sometimes rare and sometimes rich, which leads to idle jitter after cold start. The lower the temperature, the more engine oil and carbon deposit are needed for cold start, which will affect the smooth progress of cold start. Million car purchase subsidy