10-16-2010, 05:31 PM
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Administrator
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Join Date: Jul 2004
Location: Wilton, CA.
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there are a lot of four barrel Holleys that do not have secondary idle mixture adjustments. Those look like blank holes to me, like a screw could not even be installed. Take a close look and let us know.
I'm still recommending taking a look at the needle and seats for debris, as well as making sure the float levels are not too high.
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