"I have a 1986 45 HP Mariner t
"I have a 1986 45 HP Mariner that has a problem. S/N A948990 4 cyl. Compression in all 4 cylinders is between 102 and 115. Now the problem.
We were going across the lake full throttle for about ¼ mile when we heard a loud noise in the engine and it quite running...