What is the reason for the idling jitter of Volkswagen EA2 1 1 engine?

Volkswagen equipped with ea2 1 1 engine appears idle jitter during driving, which may be caused by the unclean fuel nozzle of the automobile engine or the serious carbon deposition in the throttle of the automobile engine. The upper part of the throttle valve is connected with the air filter and the lower part is connected with the engine steel body, which is one of the most important parts in the engine. Throttle is a valve that controls air to enter the engine. After the gas enters the engine, it is mixed with gasoline to become combustible mixture to do work. The flexibility of automobile engine acceleration has a great relationship with the state of throttle. Throttle cleaning can effectively reduce fuel consumption and make the engine run stronger. At present, most cars use electric throttle and throttle position sensor to control the throttle opening according to the energy of the engine. Million car purchase subsidy