Burst failure of BMW 5 series valve cover

The causes of the air blowing failure of BMW 5 Series valve cover are as follows:

1, incomplete combustion of fuel in the combustion chamber.

2. The position sensor is damaged, the throttle position sensor is damaged, the line contact of the throttle position sensor is poor, the initialization position of the open circuit or short circuit is incorrect, the acceleration of the engine is poor, the vehicle will have a shift delay, and the shift impact is great.

3. Poor contact, open circuit or short circuit of the throttle servo motor circuit, engine control unit failure, and engine failure light.