Join Date: Nov 2001
Location: North Central Illinois
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Re: High pitch whistle from my Weber.???
Check the main mounting bolts at the base of the carb , too . If the base gets loose, the vacuum leak will cause the whistle . The idle mixture jet has a spring to hold tension on it , but there should only be one , unless you are running a 38DGES . There is a parts drawing available at Redline Weber's web site.