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    pre ignition -detonation

    New at this. I have a 83 140 about to go to the shop for a rebuild i have 2 piston that sufferd what the machanic said was pre ignition. This will be the second time he replaces theese pistons. He assumed that a looose wire in the stator had caused the pre ignition.Well turns out he ws wrong...
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    83 140 evinrude pistons

    alright am new at this so bear wit me i had the pistons replaced in mar of 04 the mechanic said a loose wire in the stator caused double fireing in cyilinders 2-4 so we changed the stator took the boat out did the breakin period everything fine but when i brought the rpms up the motor whould...
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