What could cause the clutch to slip or not fully disengage when the pedal is pressed?
Clutch slippage is manifested in the fact that, with a perfectly serviceable engine, the car does not climb well and accelerates slowly. This can be caused by oily disks, their severe wear, decreased elasticity of the springs, and lack of free travel of the clutch pedal.
Incomplete disengagement of the clutch causes difficulty and noise when changing gears and can lead to premature failure of the synchronizers and accelerated wear of the gearbox teeth. This malfunction most often occurs when the disks are dirty, skewed or deformed, the position of the release levers is incorrectly adjusted, and when the free travel of the clutch pedal is too large.
It should be borne in mind that noise in the gearbox is not always a consequence of incomplete disengagement of the clutch. This noise can occur due to wear or improper adjustment of the bearings, as well as wear or improper engagement of the bevel gears. A loud knock in the indicated places indicates the presence of a serious malfunction that requires immediate stopping of the car and repair of the unit.
What could cause difficulty shifting gears or them disengaging spontaneously?
Difficulty shifting gears or their spontaneous disengagement is the result of wear of locks and clamps or the gear shift mechanism drive. Here, serious repairs are essential.
Such malfunctions can be prevented in the following ways: periodically carefully check the reliability of the fastening of all units and parts of the power transmission, as well as monitor the oil level in the gearbox and change it in a timely manner.