I recently bought an old boat with a 65 mercury 4 cylinder motor. The guy I bought it from thought the starter was fried because the cranked on it trying to start it until it stopped working. I checked the starter and its working properly. Is the problem why it won't turn over enough because something is siezing up? I took plugs out, and pulling with the rope it still pulls very hard almost to the point where it sticks at certain times. I sprayed lube in plug holes and let sit for a couple days and removed exhaust plate to inspect pistons and they look good. Any Ideas?
