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What can be wrong!

Discussion in '4 Cylinder' started by silverback, Oct 22, 2011.

  1. silverback

    silverback [OP] Well-Known Member

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    Well i filled up my tank the other day and combination city and highway driving if my tank is 21 gallons im getting between 290 and 300 miles to the tank.

    Simple math = 14 mpg. WTF! on a 4 cylinder! I mean i put 17 inch wheels on instead of the 16 inch stealies and slightly larger AT tires but really? I might as well drive a full size v8. Any ideas on what to check before I trade this thing in. Can't have this with $3.80 gallon and especially a 4 banger.

    Its always been around this area. Even with the stock tires. Fyi i have noticed for some time what sounds like a slight exhaust leak when driving next to a wall along the road but I cant see anything when im under there.
     
  2. TacomaBuzz

    TacomaBuzz Manual Transmission Enthusiast

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    Something is way off, I've been getting a consistent 25+ Mpg. AndrewFalk gets around 26-27 Mpg. Do you need a tune-up? I would go back to stock tires/rims if gas mileage is important and consider getting a base 2.7L Tacoma. You are carrying around extra weight and drag due to having the same suspension and height as the 4x4's.
     
  3. friction

    friction Well-Known Member

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    Wait. Are you actually figuring based on a trip reading or are you assuming the "E" line is the full 21 gallons? Even when the gas light comes on we have around 4 (or more) gallons left...
     
  4. Yoytoda

    Yoytoda The Little Truck That Could

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    you cant divide the size of the tank by the miles... you have to divide the miles by how many gallons you put in...


    21 gallons is the entire tank. usually i only put in 17 gallons when the light comes on and get 350 miles which is about 20mpg average



    there is not much difference in the mileage of a base and a prerunner. the 4.10 gearing in a prerunner compensates for the tire size and height.
     
  5. silverback

    silverback [OP] Well-Known Member

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    Ill give it another shot. But I know its pretty darn low. Id except 20mpg.
     
  6. silverback

    silverback [OP] Well-Known Member

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    painted door handles, bilstein 5100's front and back, K&N air filter. Precision power component speakers and Kenwood deck.
    Ive got 72k miles. Bought with 53k. Maybe ill try a tuneup. Already replaced the plugs and the air filter and just changed the oil last week. Ill take it in let them run it and see.
     
  7. mech160

    mech160 Active Member

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    Tried the "hot rod/heavy mod" scene for decades. Can't beat a clean, all original, factory specs vehicle.
    Top off tank and "zero" the trip meter. Next time you fill, top off tank again and note both mileage on trip meter along with amount of gallons it took to top off. (I usually fill until gas pump handle automatically shuts off, and then slowly squeeze handle again until it shuts off again) Divide trip mileage by gallons added; you don't have to wait until you are close to empty or even half. 125 miles divided by 5 gallons = 25 mpg
     
  8. AndrewFalk

    AndrewFalk Science!

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    :)
    Winner. ;)
     
  9. MightyMouse-SCT

    MightyMouse-SCT Well-Known Member

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    Yup . You have to divide the miles by what you fill up with . But I'm assuming you are filling up when the light comes on and that usually means about 16.5gals to fill and 290-300 miles at that point is not good . You should be around 360 miles .
     
  10. Yoytoda

    Yoytoda The Little Truck That Could

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    but you know what they say about assuming. when you assume it makes an
    ASS of U and ME

    for all we know he fills up when he hits 1/4 tank. :notsure:
     
  11. AndrewFalk

    AndrewFalk Science!

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    :)
    300 * (6.02 x 10^23) :p
     
  12. MightyMouse-SCT

    MightyMouse-SCT Well-Known Member

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    Yeah with the way the post is it probably Is 1/4 tank .

    My 10' prerunner 4x2 gets 325 miles on average every 16.5 gallons . But it runs 32" bfg ko , is lifted 1.75" in the front . I also run it with ac on all the times and carry between 200-400 pounds in the bed at all times .
     
  13. MightyMouse-SCT

    MightyMouse-SCT Well-Known Member

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    But anyways... Fuelly and gas mileage is for women . If you wanted good gas mileage you should have looked at the Prius . Not a prerunner pickup truck .
     
  14. Yoytoda

    Yoytoda The Little Truck That Could

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    thats pretty ignorant to say...

    if you are getting 10mpg are you gonna say eh fuck it its a truck or would you be concerned?

    its a good idea to keep track of mpgs to make sure your truck is running right. its also not women like to want the best mileage we can get...


    Edit: if you dont care about mpgs you shoulda bought a 1 ton dodge with a hemi
     
  15. MightyMouse-SCT

    MightyMouse-SCT Well-Known Member

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    If the if ever happened I'd know there is a problem . Cracks me up that people post things on gas milage but they bought a truck and moded it out for the worse and ask why .
     
  16. 4Wheelin4Banger

    4Wheelin4Banger Longtime Toyman

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    What can be wrong?
    Operator error
     
  17. silverback

    silverback [OP] Well-Known Member

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    Jesus your right my truck is so severely modified I should have though twice about posting. I guess running 275 vs 265 is intense.
     
  18. silverback

    silverback [OP] Well-Known Member

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    lead foot? Ill accept that answer.
     
  19. friction

    friction Well-Known Member

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    Seriously, are you calculating it correctly? Look at a few of the first posts...reset the trip when you top off the tank, and divide the trip by the number of gallons you refill with.
     
  20. Brunes

    Brunes abides. Staff Member

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    It does change the calculation...
     
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