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Old 06-23-2007, 10:27 AM
JG700 JG700 is offline
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vacuum leaks

Hello. 1980 Corvette 350 L-82 automatic tranny. New rebuilt. Installed yesterday.

The idle surges/pulses in drive and park (800 -1300 back and forth). I assume it is a vacuum leak. I sprayed carb cleaner around the base of the carb - no change. I covered up the top of the carb with my hand (all suggestions from this site) and it seemed to smooth out. What's next? How do i find the leak, and what exactly am I looking for? Any known culprits to start with? Thanks!

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