My car (Police interceptor)has been getting bad gas milage...I've replaced the fuel filter,Air filter,New spark plugs,New coil packs...But still get 17 mpg mostly highway(85 miles to a quarter tank..4.75 gal)driving but my friend with the same car (Police interceptor) gets 110 to a quarter...But my car does have an exhaust leak at the manifold cause of a broken bolt..And has a lot of idling hours...Could it be the leak messing with the o2 sensors or maybe I need to replace the sensors cause it idled alot?
Nov 18, 2014 at 1:29 PM