04-17-2006, 05:31 PM
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CC Member
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Join Date: Oct 2000
Location: Crystal Lake,
IL
Cobra Make, Engine: Everett-Morrison, 434 cid
Posts: 977
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Not Ranked
Spark plug readings may fool you into thinking you're lean when you really aren't. With an MSD or other high-energy ignition it takes much longer to develope any color to the plugs. I can run on the track for a whole weekend and the plugs come out bone-white when I'm jetted 1/2 a jet rich. To properly read a plug you have to cut the threaded part off exposing the entire porcelain and "read" the very base of the porcelain.
Last edited by scottj; 04-17-2006 at 05:34 PM..
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