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    1983 Four Winns mercruiser 488 3.7L overheating HELP

    Nope freshwater. We’ve looked at that, and it looks good. Is there something we may have missed?
  2. C

    1983 Four Winns mercruiser 488 3.7L overheating HELP

    New boat owners- let me preface with that. We bought a 1983 Four Winns Marquise 180 last summer. Ran great all summer, until it didn’t. Made a loud sound and engine cut off. We thought it was the lower unit, so we replaced that with a used one with a new water pump. Had some electrical issues so...
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