What are the causes of incomplete clutch disengagement?

[EliasLee]

The causes of incomplete clutch disengagement are: 1. Excessive free travel of the clutch pedal; 2. The inner ends of the release levers are not on the same plane, with individual levers being deformed, broken, or severely worn; 3. Warping of the clutch driven plate, loose rivets, or the newly replaced clutch friction plate being too thick; 4. The clutch driven plate is installed upside down; 5. The keyway of the driven plate hub and the spline teeth of the transmission's first shaft have too small a gap or are stuck, making movement difficult. The diagnostic method is: Drive the car to a flat road surface, place the gearshift lever in the neutral position, and depress the clutch pedal. If there is only the driver, a wooden stick can be used to press down the clutch pedal and hold it (pull up the parking brake handle to engage the hand brake). Inside the hole under the flywheel housing, use a screwdriver to push the clutch plate. If it can be pushed lightly, it indicates that the clutch can still be disengaged; if it cannot be pushed, it means the clutch fails to disengage.