After washing the throttle, the air flow increases.

The throttle itself is faulty and needs to be replaced.

After cleaning the throttle, the air gap increases. Generally, the throttle itself has some faults and cannot be completely closed, so the air is exposed from the front of the throttle, which in turn increases the air flow. In this case, a new throttle valve needs to be replaced and reinstalled.

Throttle is a controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, and the combustion is successful.