exhaust manifold gasket. on 2004 Ford Mustang

does a bad exhaust manifold gasket cause poor gas mileage?

by in Little Rock, AR on December 27, 2009
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 , December 27, 2009
Yes, because the fresh air hits the Oxygen Sensors and makes the car run REALLY RICH, which cuts about 40% off your mileage. You may also have a Check Engine Light on as well. This article explains about the Check Engine Light http://repairpal.com/check-engine-light