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Old 08-24-2011, 08:44 PM   #2
nismolvr
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Join Date: Aug 2006
Location: Modesto,California
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s13

has any one messed with throttle screw settings? Have you cleaned Throttle valve of any gunk or carbon deposits ?maybe certain air passages in TB are clogged and your engine starves for air at idle, runs rich. New air filter? High HCs with High COs at idle are a sign of not enough air . Will bet some one messed with throttle screw settings....Hope this helps..
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