Intake manifold on 1994 GMC Yukon

What are some of the best ways to test for a leaking intake manifold gasket. I have a miss during highway accerating. Thanks

by in Minneapolis, MN on March 07, 2011
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , 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.