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  1. Doral265BR496Merc

    496 Mercruiser Runs Rough Until Warm

    Thank you for your Reply. I had a feeling it would run fine on 87 instead of 91, but i fill my boat by jerry cans at my dock and use 91 so it has zero ethanol. I have not inspected the spark plugs, I will now though. I have noticed some soot around the outdrive on the transom, but I have...
  2. Doral265BR496Merc

    496 Mercruiser Runs Rough Until Warm

    Good Evening iboaters. Long time (many years) of reading, first time posting (my good luck with boats is hopefully only temporarily being challenged). I have read many forums with similar issues and tried a few things that did not correct the issue. Here is a quick over-view. I have a 2007...
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