1996 Chevy Vortec 5.7l Low Manifold Vaccuum

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November 11th, 2010, 10:39 AM

mdm6713

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1996 Chevy Vortec 5.7l Low Manifold Vaccuum

Any idea why my manifold pressure would be around 10? When I shut the motor off it goes to 30...but while running around 10 only? Maybe EGR? please assist..thanks

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November 22nd, 2010, 11:38 AM

silverado13

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could be a egr valve or maybe intake manifold gasket, but i dont know why that would make the pressure go up when the truck is off?

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