Quote:
Originally Posted by 20GMC00
When I spay carb cleaner around the intake, I can hear it backfire a little when I spray between the distributed and the intake. I tried the smoke test and there were no visible leak with that.
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do the smoke test again. pressurize the intake a few PSI.
use condom on the TB air intake bore . inject smoke into the PCV hose to the TB base intake manifold .