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Old 09-18-2016, 10:22 AM   #69
1969c10joe
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Join Date: Sep 2016
Location: lompoc ca
Posts: 228
Re: Diagnosing a misfire

black smoke is fuel and blue smoke is oil.Yes you should select correct power valve.Also if oil is fouling plugs they look different. you might have more than one thing wrong withcarb
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