You might have too much air passing by your butterflies due to wear and can't adjust them closed. Check out my web site www.PerformanceOriented.com for info regarding wear items on the Webers on the Technical page. Butterflies edge wear due to uncontrolled axial throttle shaft movement (check out the picture showing this.)
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Paul Abbott
Weber service specialist
www.PerformanceOriented.com
Last edited by 1QuickS; 12-01-2009 at 07:31 PM..
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