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Old 09-02-2016, 04:26 PM   #3
Mitch//pa
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Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
Default Re: Manifold Vacuum Leak Question

If it is hitting on all 4 at idle and running good until 3rd gear I would look else where..
Could be timing, fuel starvation, weak spark, restricted exhaust etc...
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