Quote:
Originally Posted by garry viohl
428 fe with autolite plugs and 7 are tan in color, while 1 is black. What is happening? Its #2 plug (pass side, 2nd back from front)
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Clean it, gap it, put it back in and exchange the plug wire with one of similar length, and make a note to yourself which one you switched it with (uhh, when I say "switch it" I mean at both the spark plug and distributor end

) and see if the problem goes away or switches over to the plug that you switched wires with. That's the cheapest "first step" that I can think of.