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The Water Cooler
General Discussion
Needed: Exhaust smoke leak checker thingy
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<blockquote data-quote="swampratt" data-source="post: 3908890" data-attributes="member: 15054"><p>Very sensitive O2 sensor any small leak or misfire will give a lean reading and begin to richen up the mixture.</p><p>Make darn sure the spark plugs are all clean not black and sooty after each thing you fix.</p><p>Like tightening the header flanges after going rich. Pull all spark plugs and make darn sure they are clean.</p><p></p><p>Too wide of a gap can cause a misfire also.</p><p>I would set gap at .035 for initial running and testing.</p><p>Not .045" or larger.</p><p></p><p>If it is supercharged or Nitroused I would tighten them a bit more.</p><p></p><p>My corolla calls for .032" and it misfires but at .025-.027 it does not.</p></blockquote><p></p>
[QUOTE="swampratt, post: 3908890, member: 15054"] Very sensitive O2 sensor any small leak or misfire will give a lean reading and begin to richen up the mixture. Make darn sure the spark plugs are all clean not black and sooty after each thing you fix. Like tightening the header flanges after going rich. Pull all spark plugs and make darn sure they are clean. Too wide of a gap can cause a misfire also. I would set gap at .035 for initial running and testing. Not .045" or larger. If it is supercharged or Nitroused I would tighten them a bit more. My corolla calls for .032" and it misfires but at .025-.027 it does not. [/QUOTE]
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Needed: Exhaust smoke leak checker thingy
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