Usually clutch chatter is caused by liquid leaking onto the clutch and contaminating its friction surfaced.This results in a mirrorlike shine on the pressure plate or a glazed clutch facing.
Oil and clutch hydraulic fluid leaks can occur at the engine rear main bearing seal transmission input shaft seal, clutch slave cylinder, and hydraulic line.Other causes of clutch chatter include broken engine mounts, loose bell housing bolts, and damaged clutch linkage.