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  1. J

    Mercruiser MIE 340 454 won't turn over when hot.

    I have a 1984 searay ec390 with twin 454 mercruisers. When cold the engines fire right up and run perfectly. Once the motors are warm/hot, if I shut them off I can barely turn them over. It acts like the timing is way off but it's fine and set at 8 degrees btdc. I recently replaced my...
  2. J

    Mercruiser MIE 340 454 won't turn over when hot

    I have an old 1984 searay ec390 with twin 454 mercruisers. When cold the engines fire right up and run perfectly. Once the motors are warm/hot, if I shut them off I can barely turn them over. It acts like the timing is way off but it's fine and set at 8 degrees btdc. I recently replaced my...
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