Common Clutch faults are:
SLIP – Caused by oil on the friction plate or worn friction plate, the symptoms of clutch slip would be partial or total loss of drive, vehicle speed lower than normal compared with engine speed.
DRAG – Clutch cable not at correct adjustment or centre plate sticking on splines. The symptoms of this would be difficulty in obtaining gear, particularly first and reverse gears.
JUDDER – Caused by warped friction plate or engine / gearbox mounts broken. The symptoms of this would be a shudder and vibration as vehicle moves off from rest.
(quoted from: http://www.nationwideautocentres.co.uk/services_clutches.asp)
DRU
July 2008