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2004 Ford Mustang Question: exhaust manifold gasket.

 

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camillio2004, 3.8L V6, Little Rock, AR, December 27, 2009, 14:57
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does a bad exhaust manifold gasket cause poor gas mileage?

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  • Answer #1

    dandd December 27, 2009, 19:56
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    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

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