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Old September 4th, 2019, 10:25
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Tim_MN Tim_MN is offline
Freakish Hand Strength
 
Join Date: Mar 2003
Location: Minneapolis, MN
Posts: 7,010
Re: Bad gas mileage 10-11 MPG

Check the basics, tune-up, comp, vac leaks, manifold leaks, and then check the O2 sensors. Nearly all XJ's have or will have a cracked exhaust manifold.
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Originally Posted by bimmerjeeper

People are dumbfounded when I tell them I know how to change the spark plugs on a car.
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