» » »

Ford Q&A

Ask Your Question

2004 Ford Mustang Question: exhaust manifold gasket.



camillio2004, 3.8L V6, Little Rock, AR, December 27, 2009, 17:57

does a bad exhaust manifold gasket cause poor gas mileage?

1 Answer
Flag This
  • Answer #1

    December 27, 2009, 22:56

    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


    Flag This