Thread: cosworth black smoke running rich? backfires when revved hard thick black sooty plugs
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Old Sep 9, 2015 | 06:34 PM
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From: preston
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what plug gaps are you running? and are you just adjusting the c02 screw willy nilly or do you have it hooked up to a gas analyser whilst doing so because if not its pointless just playing with the screw
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