Pedal travels to floor - no pressure or very little resistance - Hydraulic fluid level low/air in the hydraulic system - Broken clutch release bearing or fork - Broken diaphragm spring in clutch pressure plate

Clutch fails to disengage (unable to select gears)

- Hydraulic fluid level too high
- Clutch disc sticking on gearbox input shaft splines
- Clutch disc sticking to flywheel or pressure plate
- Faulty pressure plate assembly
- Clutch release mechanism worn or incorrectly assembled

Clutch slips (engine speed increases, with no increase in vehicle speed)

- Hydraulic fluid level too high
- Clutch disc linings excessively worn
- Clutch disc linings contaminated with oil or grease
- Faulty pressure plate or weak diaphragm spring

Judder as clutch is engaged

- Clutch disc linings contaminated with oil or grease
- Clutch disc linings excessively worn
- Faulty or distorted pressure plate or diaphragm spring
- Worn or loose engine or gearbox mounting
- Clutch disc hub or gearbox input shaft splines worn

Judder as clutch is engaged

- Worn clutch release bearing
- Worn or dry clutch pedal bushes
- Faulty pressure plate assembly
- Pressure plate diaphragm spring broken
- Broken clutch disc cushioning springs