Examine the clutch driven plate contact area on the flywheel for scoring or cracks; if these are severe or extensive, the flywheel should be renewed, as surface grinding is not recommended due to potential imbalance of the crankshaft/flywheel assembly. If the teeth on the flywheel starter ring are badly worn or missing, it will be necessary to remove the ring and fit a new one, or preferably exchange the flywheel for a reconditioned unit. For cars equipped with automatic transmission, inspect the driveplate for cracks, especially at the bolt holes, noting that the starter ring gear on these models is welded to the torque converter.