4
Remove the inspection cover to check fro abnormal wear. In some cars, there is a plastic cover located on the bottom of the bell housing. (The bell housing is the part that holds the clutch and is bolted to the engine block.) This plastic... cover is called an inspection cover and can be popped off to view the clutch. Remove the inspection cover with a flathead screwdriver and look for any signs of abnormal wear. If your clutch is going bad, there will be substantial visible damage---not just black powder.

5
Remove the transmission. Beyond these indicators, the only other way to check if your clutch is going bad is to remove the transmission. Unless you have advanced automotive knowledge and equipment, this will need to be done at a transmission shop.

Courtesy of Ehow