What is the reason for the abnormal sound of BMW mini stepping on the accelerator at low speed?

Cause of abnormal sound when stepping on the accelerator: 1. Gasoline pump motor: When there is wear or impurity inside the gasoline pump motor, stepping on the accelerator will make abnormal noise. This problem requires replacing the gasoline pump. 2. Throttle: At present, the electronic throttle is used to control the opening and closing of the valve. Naturally, it is a motor. When the motor gear is worn, insufficient meshing will produce abnormal sound. When there is too much carbon deposition in the throttle, it will also cause abnormal noise in the throttle. The throttle can be cleaned. If the motor is damaged, it is necessary to remove the throttle and replace the servo motor. 3. Accelerator pedal bearing: Poor lubrication of accelerator pedal bearing produces abnormal sound. You can grease the bearings. 4. Clutch: The clutch release bearing is damaged, the clutch plate is not completely separated, and there is abnormal noise. Remove the clutch and replace the release bearing.