Join Date: Mar 2002
Location: Austin, TX, USA
Re: Car is Mis-firing???
First step would be to verify your ignition system. Make sure the plug wires are correct (1-8-4-3-6-5-7-2). Make sure none of the plugs are arcing to a header or other metal object and that there are no cracks or holes in the insulation. Make sure the cap and rotor are in good shape. Make the plugs are properly gapped and not cracked.
Another system worth a look would be the air injection system. Ignition problems should show a noticeable performance problem. However, when the engine is warm the air injection system should stop pumping air into the exhaust system. The fresh air can cause popping in a rich exhaust without a noticable performance problem.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI