HI I have 84 f150 with duel tanks the front tank works and the rear seems to work at times. When I switch to the rear the gas gauge changes. What I would like to know is why am I using so much gas only 8 to 10 miles per gallon could there be a problem with the duel tanks am I useing the wrong tank? Do I need to adjust the carb its only a two barrel 351 and I feel I should be getting better milage. The millage on the truck is original 90256 Please advise
Dec 27, 2009 at 10:47 AM