I found a boat with a 1991 115hp (4cyl/2 stroke) in reasonably good shape, except for one thing. He claims the engine started running rough, and he immediately returned. It was determined the oil injection line right beneath the oil tank that goes into the carb came off. He was told he lost a cylinder. I checked the compression and the second cylinder from the top is flat.
Do I need to be concerned about other damage? How much would it cost to fix this problem? The engine has a lot of new parts, and I am interested in pursing the boat.
Is the 4cyl/2 stroke 115 Mercury basically a good engine?