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Why do i smell gas in the truck??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 88MudBeast, Oct 23, 2001.

  1. 88MudBeast

    88MudBeast Registered Member

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    OK, yesterday i filled up with regular unleaed gas, and now I smell gasoline in the truck. Its pretty thick in the back, but not quite as much in the front. Could there be some kind of leak? Thanks

    -Jake
     
  2. Redfrog

    Redfrog 1/2 ton status

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    I would say your vent tube is ripped

    my 79 rust bucket will run over your 2001 chevy 4X4 tahoe plastic wagon
     
  3. 88MudBeast

    88MudBeast Registered Member

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    And what exactly is that?
    -Jake
     
  4. Cusm

    Cusm 1/2 ton status

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    Or you might want to cut down the trips to Taco Bell.

    Good lord. The rod up that man's butt must have a rod up it's butt.
     
  5. Sparky

    Sparky 1/2 ton status

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    Just a thought, but did you drive with your back window down? If you have never done that, it creates a vacume and sucks in all the exaust gas from the truck. Its a long shot, but that might be what you are smelling.


    Sparky

    When all else fails... Check the blinker fluid.
    78 K-5
     
  6. Redfrog

    Redfrog 1/2 ton status

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    The vent tube runs along the side of the filler hose and lets the gas vapor vent outside. The one on my 76 ripped and I smelled gas. if you get the tank to full gas will come out of it also.Someone correct me if I'm wrong. Or it may be what Sparky
    said

    my 79 rust bucket will run over your 2001 chevy 4X4 tahoe plastic wagon
     
  7. dyeager535

    dyeager535 1 ton status Premium Member

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    Theres a few things that can leak in the back for fuel. Crawl under the truck and look where the fuel fill neck goes. You will see a large rubber connecting hose, and a small one. Both should still be attached at the fill neck, and the fittings that come off of the sending unit (top of tank) while you are there, try and eyeball any of the rubber fuel/vapor/return lines that enter the tank. All exit/enter the tank on the passenger side, where the fittings for the fill neck hoses go. Might have popped one, cut one, or the clamp broke. If you disconnected the EVAP cannister up front, that will let out gas fumes as well. (which is why it really shouldn't be disconnected)

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>www.dorianyeager.com/index2.html</a>
    Why insist on counting when the ring gear has the tooth counts stamped in?
     
  8. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Is the metal cover in the bed area rusted through. Could have shot some gas out and if that is rusted out the gas may have got into the carpet if it backwashed like it seems most pumps do these days.

    Women dig dents and flat paint!
    <a target="_blank" href=http://communities.msn.com/OffroadK5s>communities.msn.com/OffroadK5s</a>
    75 Jimmy, Dollar
    Grim-Reaper
     
  9. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Is the metal cover in the bed area rusted through. Could have shot some gas out and if that is rusted out the gas may have got into the carpet if it backwashed like it seems most pumps do these days. burp

    Women dig dents and flat paint!
    <a target="_blank" href=http://communities.msn.com/OffroadK5s>communities.msn.com/OffroadK5s</a>
    75 Jimmy, Dollar
    Grim-Reaper
     
  10. johnny reb

    johnny reb 1/2 ton status

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    I had the same problem until I replaced the rubber weatherstripping on my tailgate. I replaced it and no more gas smell. Although I have dual exhausts that exit directly under my rear bumper. I don't even think of driving with my rear window down.

    1986 K5, New GM 350, Edelbrock Intake, K&N Air Filter, Flowtech Headers, Dual 3" Exhaust, 33" Pirelli Scorpion AT, 700R4, 3.42 gears
     
  11. riz

    riz 3/4 ton status

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    <font color=purple> You may never know what your trucks rear floor is like under the carpet ......... Mine was shot and I'm sure it was letting lots of fumes in through there ........ with new floor hopefully will put an end to that ! My exhaust tips exit at the rear at a 45 degree angle so that shouldn't be an issue !

    L8r,
    . Riz . <a target="_blank" href=http://www.geocities.com/rizmonkey>www.geocities.com/rizmonkey</a>

    <font color=purple> BOW CHICKA BOW WOW !
     
  12. k5texan

    k5texan 1/2 ton status

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    my pipes used to exit out the side and i always had my window down, now my pipes run straight back under my bumper and i cant even crack the rear with out smelling it.
     

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