Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
06-08-2020, 05:33 PM
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Check timing and rev it up with the vacuum advance hooked up to make sure it is working.
Make sure no vacuum leaks. Clean the idle and main air bleeds with some carb cleaner, especially if it has been sitting. I use a 31 squirter in my small block mild cam with headers Corvette. 
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#2
06-09-2020, 01:32 AM
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Another possibility is your primary power valve may be opening too soon causing the hesitation. When did this start happening? You may need to go down a # or two. It could be what other suggest. Goodluck......
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Steve Shauger The Supercar Registry www.yenko.net Vintage Certification™ , Providing Recognition to Unrestored Muscle Cars. Website: www.vintagecertification.com Last edited by Steve Shauger; 06-09-2020 at 01:45 PM.
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