C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Vacume Leak

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Old Jun 13, 2003 | 11:49 PM
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joalyons's Avatar
joalyons
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From: Springboro OH
Default Vacuum Leak?

I am getting a slight backfire through the plenum when I hit the gas lightly; if I back off and punch it she cranks right up to 5200. I checked the vacuum and it’s running a sold 17lbs, no movement in the needle. If I had a leak would it do that?

Given my cam and other mods that does not sound bad, but I just replaced the runners with SLP's and I’m not sure if that’s it. I also disconnected the battery and my car usually runs like crap for a few hundred miles after "resetting the computer".


Any thoughts (other than always punch it) :cool:


[Modified by joalyons, 9:16 AM 6/14/2003]
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