bad gas mileage

Discussion in 'Trucks and Trailers' started by pcs, Jan 25, 2001.

  1. pcs

    pcs LawnSite Member
    Messages: 198

    I have a 97 F-150 2wd 4.2L v6. I can only get 185-200 miles on a tank of gas. I don't understand why. There is no leaks. Changed the spark plugs, air filter and a few other little things and no change.
  2. KirbysLawn

    KirbysLawn Millenium Member
    Messages: 3,485

    Is this a new problem?
  3. 65hoss

    65hoss LawnSite Fanatic
    Messages: 6,360

    It may be using more fuel because of the 6 cyl. It has to work harder to do the same job. I have the 4.6 v8 and it gets about 225 to 235 pulling the equip.
  4. John DiMartino

    John DiMartino LawnSite Silver Member
    Messages: 2,555

    The 4.2 is low on torque,any chance iis your driving habits?heavy foot,high speeds or long warm ups,and idling time kill mileage.
  5. pcs

    pcs LawnSite Member
    Messages: 198

    This has been happening for a few months now. This gas mileage is not pulling any trailer either.
  6. 65hoss

    65hoss LawnSite Fanatic
    Messages: 6,360

    Could be the computer is screwed up. Not adjusting the amount of fuel used. I've had the computer on mine reprogrammed by dealership.
  7. SDF250

    SDF250 LawnSite Member
    Messages: 87

    I have heard that any new programs from ford are geared for LOWER EMISSIONS and could lower mpg

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