What Causes Abnormal Noise When Depressing the Clutch Pedal?

[Robinson]

Introduction to the causes of abnormal noise when depressing the clutch pedal: Insufficient tension of the return spring: When the engine is idling, there is a "rustling" friction sound inside the clutch. First, lift the pedal with your foot to see if there is any return movement. If there is return movement and the noise disappears, it indicates insufficient tension of the return spring. Failure of the release bearing return spring: If the pedal returns normally, check the free travel of the pedal. Adjust if it does not meet the requirements. If the free travel is normal and there is a knocking or friction sound when the engine speed changes, it indicates a failure of the release bearing return spring. Noise from the release bearing: Slowly depress the clutch pedal until the free travel is just eliminated (i.e., when the inner end of the release lever just contacts the release bearing). If a "rustling" sound occurs at this moment, it indicates noise from the release bearing.