302 misfire at idle - Ford Muscle Forums : Ford Muscle Cars Tech Forum
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post #1 of 2 (permalink) Old 05-22-2016, 08:45 PM Thread Starter
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302 misfire at idle

ford 302 mis-fire
I am having a mis-fire with a new crate 1986 302 engine, new hei style distributor and everything else on and in it are new. I checked the timing, carb, wiring, timing, true 12 volt source. The complete fuel system is also new from the tank to the carb and I am still getting a low idle mis-fire (popping back through the carb) and no vacuum leak exists either. Ran a compression check and re-ran the valves too. Any suggestions?
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post #2 of 2 (permalink) Old 05-24-2016, 04:34 PM
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Install vaccum guage...remove spark plug wire from each cylinder til you identify which one is causing the issue. And go from there. Easy to do power balance test.
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