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Re: Diagnosing a misfire
Well I've gone through 3 sets of Accel header plugs, and after reading about them I decided to try a set of Autolite 26's which are a bit hotter. I let it idle for about 10 minutes and pulled a plug, same thing, black and sooty. This time I had the mixture screws 1 1/2 turns out.
The timing is all set perfect, 18* initial and 36* total at 3000rpm. I put a new power valve in because it's only making 7"Hg vacuum, power valve is a 4.5
The haze of unburnt fuel seems to get worse the longer it idles, maybe because the plugs are fouling further?
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