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  1. J

    is compression 105/135/125 BAD, running rough

    My 1986 60hp Merc losted power and now runs very rough. Idles a little rough, but really starts missing under load and will not come up on plain.<br />Checked compression 105/135/125 top to bottom, seems to have good spark on all plugs. Rebuilt both carbs and didn't find anything wrong.<br />Can...
  2. J

    1985 Merc 60 cuts out while running full throttle

    My 1985 Merc 60 starts, idles and runs good, but intermittently when running full throttle it will cut out and loose power. If you backoff the throttle, to an idle (or sometime just pump it) it will throttle back up and run fine again. This seems to only happen when the motor has run for a while...
  3. J

    Merc 60 overheating?, burned cyl. or ???

    I have a 1985 merc 60. It blew the water jacket gasket around #3 cylinder. I fix it and the motor worked fine for months, then while running full speed the motor just slowed down and stopped. The motor cranks up, but is knocking. Other than checking compression where should I go from here and is...
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