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#4 cylinder not firing at low RPMs 140-160 1971

uid 8749's pic
posted by  signalius on  Fri Dec 13 19:40 CST 2002
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last visit: Mon Dec 30 07:34 CST 2013
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I have a 1971 145, B20 with Weber DGV... At low RPMs the #4 cylinder isn't firing. The spark is good and when I pull the plug wire off at idle there's no difference. There's a bit of oil leakage around the head gasket-- could this be the problem? I set the valve clearances to .016-.018 as recommended but then found engine specs for the 1971 B20B to be 0.020-0.022, different from all other B20s. Could this be the problem? I haven't readjusted the valves yet, but I'm hoping this might solve the problem. I fear I may be losing compression--- is this a symptom of such?

Thanks

Ben
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New #4 cylinder not firing at low RPMs [140-160][1971]
posted by  signalius  on Fri Dec 13 19:40 CST 2002 >


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