1. Clutch pedal feels spongy or soft. This is a sign that there is air in the clutch line, which can be caused by a leak in the master or slave cylinder.
2. Clutch pedal goes to the floor. This is also a sign of a leak in the master or slave cylinder.
3. Clutch does not engage or disengage properly. This can be caused by a number of things, including a bad master or slave cylinder.
4. Fluid is leaking from the master or slave cylinder. This is the most obvious sign of a bad master or slave cylinder.
If you are experiencing any of these symptoms, it is important to have your clutch system inspected by a qualified mechanic as soon as possible. A bad clutch master or slave cylinder can cause major damage to your transmission, so it is important to get it fixed as soon as possible.