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    1979 3.7 470 Mercruiser not start after hours of perfect use?

    Hello Dr: I have a 1979 Marquis Carabbean 18', 4 cylinder 4 stroke. Start and runs fine for hours. Park it for 30 to 60 miniutes. Re-start..... cuts off after 1 - 2 minutes. May try to start a few times , but acts like it gets chocked off. Normal running and WOT are all in specs when...
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