Performance problem with 3.1L chevy after repairs, maybe a vacum leak.

I have replaced the Intake gasket set on a 3.1Lchevy, that was having a performance problem and leaking coolant. After all the repairs including the converter and testing fuel pressure, still having performance problems. Was checking vacum 17-18psi at idle but drops way off under acceleration. Please help, thanks, Barry

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William Green says

5 years ago
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