Audi cars will shake when driving, which feels like the vibration on the speed bump.

Audi cars will shake when driving, which feels like the vibration on the speed bump.

Engine idling vibration usually has several reasons. The most common reason for engine idling vibration is that the throttle valve is too dirty or the fuel injector has too much carbon deposit, because the gasoline adsorbed on the carbon deposit after landing is sucked into the cylinder by the engine for combustion, and the combustible mixture of the engine is sometimes rare and thick, which leads to idling vibration after cold start. Solution: The company cleans the oil circuit, and checks whether the idle motor has carbon deposit, so it should be cleaned.