Here are some symptoms of bad clutch:
- Difficulty shifting gears
- Unusual grinding noise when shifting gears
- Slipping or jerking feeling when accelerating
- Burning smell (often from overheating clutch)
- Reduced acceleration even though the engine is revving

Some causes of clutch problems are:
- Normal wear and tear over time
- Misuse, such as "riding the clutch" or harsh shifting
- Hydraulic problems with the clutch system, such as low fluid levels or air in the lines
- Broken or worn clutch components, such as the pressure plate or clutch disc.