Thread: Exhaust popping
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Old 12-01-2009, 10:29 AM   #5
chicklin
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Join Date: Jun 2008
Location: Kansas City, MO
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Re: Exhaust popping

Quote:
Originally Posted by xrcr View Post
I'm going to ask a stupid question. Did you replace the plug wires? How about your vacuum advance? I fought this problem with "newer" plug wires and that is what I had it narrowed down to after complete rebuild on the HEI and replacing the vac adv.. Truck didn't idle rough though. I'd double check everything before I did a top end rebuild.Pop your valve covers and check valve adjustment.
Entire distributor (which came with a new vac adv), plugs, wires and coil have all been replaced and checked. The plugs are not fouling as far as I can tell, the wires are routed correctly and there is no obvious arcing anywhere.
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1954 Chevy 3600 - 235, 4-spd
1986 Chevy Suburban - 350, 700R4
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