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Old 06-17-2007, 12:44 PM
marculan marculan is offline
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Join Date: Jul 2004
Cobra Make, Engine: 289FIA
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Default How to adjust carburetor?

I have a brand new Ford Racing 392ci with a Holley 4150 dual feed, double pump carb in an ERA FIA car. I've put less than 1000 miles on the car and have already fouled the plugs (black and sooty). The car is clearly running rich. How do I adjust the air / fuel mixture, and how do I know when I've "got it right"? How do I know if it is an idle mixture problem or requires adjustment to the jets? Help!!
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