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    Engine Overheat - Low & High RPM - 2007 Merc 350 MAG MPI Bravo 3 - 400 hours

    Reaching out for help to diagnose a low and high rpm over heat. High overheat occurs above 3500+ rpm when at this speed for more than 3-4 minutes. Low overheat occurs at lowest idle, 600-700 rpm, when at this speed for 10+ minutes. When engine is increased to 800+ rpm the temp cools down...
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