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Intake manifold

(1994 GMC Yukon)
in Minneapolis, MN on March 07, 2011
What are some of the best ways to test for a leaking intake manifold gasket. I have a miss during highway accerating. Thanks
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Popular Answer
of Tri State Auto Repair on March 07, 2011
Spray 2+2 around the intake manifold to see if the RPM's (idle) increase or decrease. If it makes a difference in the RPM's, you probably have a vacuum leak.
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