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2.7L goes whacky after fill up. Help

Discussion in '4 Cylinder' started by SargeSlapnuts, Mar 22, 2011.

  1. Mar 22, 2011 at 8:04 AM
    #1
    SargeSlapnuts

    SargeSlapnuts [OP] SargeSlapnuts 보고용의!!!!

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    alpharetta, GA
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    every time i fill up my gas tank my taco takes a good 20 seconds to start and then once it start it idles at 200-350 rpm until the fuel needle is all the way at the top. any ideas of what is causing this???
     
  2. Mar 22, 2011 at 8:16 AM
    #2
    bjmoose

    bjmoose Bullwinkle J. Moose

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    San Jose CA
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    Blocked gas cap air vent? The vent is designed to let air INTO the tank but not OUT.

    Maybe it sticks until there's enough of a vacuum to overcome the initial stiction?

    But in that case, you'd have a prob first thing in the morning.

    Do you fill right up to the filler neck?

    The fact that the symptom occurs at fill up still makes me suspect gas cap.
     
  3. Mar 22, 2011 at 8:17 AM
    #3
    Hiatt1991

    Hiatt1991 Well-Known Member

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    sounds like a fuel filter. Id also run some injector cleaner through the gas as well.
     
  4. Mar 22, 2011 at 8:18 AM
    #4
    brutalguyracing

    brutalguyracing BIG DADDY

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    F.U> GUYZ
    broken mods
    x2^^^^^^^^^^^
     
  5. Mar 22, 2011 at 8:55 AM
    #5
    SargeSlapnuts

    SargeSlapnuts [OP] SargeSlapnuts 보고용의!!!!

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    ill check out the gas cap. just changed the little rubber gasket on the inside of the cap maybe i can pul it apart and service the inside???
     
  6. Mar 23, 2011 at 2:32 PM
    #6
    snoozeworm

    snoozeworm taco king

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    wheeling,wv
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    i had this problem, It would also do it if the truck sat in the sun for a while. It is the vapors from the gas going from the tank into the engine. My FREE fix:

    Get under the truck, there is a vent line comming from the top of the gas tank..pull it off. The gas no longer vents into the charcoal canister but directly into the air. Not epa friendly, but easily reversable and a quick fix.
     
  7. Mar 23, 2011 at 4:50 PM
    #7
    SargeSlapnuts

    SargeSlapnuts [OP] SargeSlapnuts 보고용의!!!!

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    will it throw a cel if i full the vent line???
     
  8. Mar 24, 2011 at 4:03 AM
    #8
    snoozeworm

    snoozeworm taco king

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    idk, i get a cel because my charcoal canister is skrewed so im not sure if it throws one or not, all i know is that it works
     
  9. Mar 24, 2011 at 4:09 AM
    #9
    SargeSlapnuts

    SargeSlapnuts [OP] SargeSlapnuts 보고용의!!!!

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    alpharetta, GA
    Vehicle:
    2004 TRD 4x4 converted PreRunner SR5 lifted l
    255/85-16 tires, front push bar w/9000lb winch, driver and passenger windows tinted to match factory rear tint, quick at home spray on bedliner, hid's, lifted with 3"toytec rear lift kit and ome front lift, locked with powertrax, and a cb radio in place of ash tray, fog light mod, diff breather mod, greasable shackles, Home made Baja Rack, "extra" bright reverse lights. also converted to 4x4 safari snorkel
    thats what im thinking now
     
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