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Died on water

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  • #16
    Any ideas on how the two plugs look like that?

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    • #17
      I asked around and was told maybe the spark plugs were gapped incorrectly... any thoughts on that?

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      • #18
        The engine compartment flooded the time prior to this, how would that have affected this?

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        • #19
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          Originally posted by Joe18 View Post
          Any ideas on how the two plugs look like that?
          That plug, to me, looks like possible catastrophic damage. The insulator is cracked and missing chunks, and looks like the electrode may be as well. I'd look at getting a cheap borescope to connect to your phone and look at the pistons in those cylinders.

          What 'could' have caused it? Those are looking rough enough I don't want to guess - massive timing and detonation problems? Unsure, but I'd be taking a look at your pistons via borescope.

          For reference (automotive but it's not like your boat engine is different RE: fuel/air/combustion):
          https://www.onallcylinders.com/2012/...r-spark-plugs/

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