we are first time boaters and confused. <br />We have a 1986 starcraft 16' runabout I/O that apparently has some serious motor problems. The mechanic has told us that there is a bad wrist pin causing a bad noise and vibration in the motor. Also that the stern drive has been leaking and is full of water. the bill for this work is in the $2500 range and I guess we're trying to justify spending the money.<br /> thanks forany help. Dianne