The upstream pressure of automobile throttle is too high.

1. The air intake and load of the engine are controlled by the throttle valve, which further affects the fuel injection and ignition of the engine. If the time is too long, the fault light will light up.

2. If the throttle valve of the engine is opened too much, it will cause abnormal sound of metal knocking, which may leave traces on the rocker arm and valve stem, resulting in abnormal sound that cannot be eliminated.

3. Excessive throttle opening will also reduce the intake and exhaust volume and affect the power and other performance of the engine.