Reply To: 1958 Mercury mark 10

[mark weaver]

I checked for leaks, I can’t see anything. I had a 9.8 with a crankcase leak so I looked for any sign….nothing. It acts like fire but it has GREAT spark with a drill. I have had the flywheel off a half dozen times and checked and cleaned and checked again. This old motor has what I thought great compression, is in great condition….VERY clean. I am at my wits end. GOOD fire GOOD compression…getting its gas….can’t see any air leaks or anything like that. They don’t have a head gasket….even if it did it should show on the compression test. I don’t know if the fire is breaking down when running?? I thought for sure it was a condenser….acted like it but nope.