What are the symptoms of throttle leakage?

[LukasMarie]

Symptoms of throttle leakage: unstable engine idle, jerking during driving, insufficient power, occasional stalling after parking, and the leakage area may blacken the engine cover. Throttle leakage is usually caused by leakage between the throttle seat and the intake pipe interface seat. This interface is generally fixed with screws and clamps, and improper installation can easily lead to leakage. The solution to throttle leakage is to directly replace the plastic hose between the throttle and the intake manifold. The functions of the throttle: 1. The throttle is a controllable valve that controls the air entering the engine. After the gas enters the intake pipe, it mixes with gasoline to form a combustible mixture, which then burns and works; 2. The throttle is connected to the air filter at the top and the engine block at the bottom, and is known as the throat of the car engine.