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Do You Have the Correct Jet Size?

To determine if you need to change the jets, look at the spark plugs.
Plugs should be gray or tan color.
White indicates a lean condition. Increase the jet size by .002 and try again. Note: A vacuum leak can also cause this condition.
Black indicates a rich condition. Decrease the jet size by .002 and try again. Note: Ignition problems can also cause this condition.
Altitudes above 5,000 feet usually require lowering jet sizes by .002.


AFB & AVS Jets


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