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    470 Mercruiser dies after 30 minutes

    Since there already weren't enough of these threads (sorry)... Motor is a 3.7L 224 Mercruiser 470 in a 1981 Bayliner. It runs great across the RPM range with no issues until you bring it down to idle after ~30 minutes then put it in gear and apply throttle. Sputters a bit then dies. If i swap...
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