Pukeing gas back out

Discussion in 'Technical' started by Jamie Miles, Jan 24, 2006.

  1. Jamie Miles

    Jamie Miles the road warrior

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    When I put gas in my car, sometimes it starts comeing back out. It's like it's overflowing or something, but I know that isn't the case. You have to really keep an eye on it and go slow for it to not do this. Anyone else have this problem? Sucks standing there waiting forever just to put 10 or 15 bucks worth of gas in. I've noticed with older pumps, I don't seem to have this problem. Just seems to be with the newer ones. :confused:
     
  2. maverick1970

    maverick1970 MCG State Rep

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    You have a clogged vent
     
  3. Jamie Miles

    Jamie Miles the road warrior

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    The vent hose isn't even connected because the steel line that goes to the front of the car is rusted out/crushed. Unless your talking about the actual plastic piece on top of the tank that the hose connects to.
     
  4. hotrod-daddy

    hotrod-daddy Member

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    The plastic piece on top of the tank is a check valve,it could be bad.As for the gas pumps....I,ve noticed there is more air dispensed with the newer pumps.....I'd almost bet that you(we) are not getting the full gallon of gas for what we pay......
     
  5. stmanser

    stmanser Looking for a Maverick

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    either the gas isnt getting into the tank due to a blockage in the filler tube... maybe about half way down... i would take it off and check.. dont just shove it into the tank..

    or

    the vent for allowing air to escape is clogged.. there needs to be a way for air in the tank to escape.. otherwise, with all the gas going in... it just pressurizes and then the air comes out.. the filler tube and dumps gas out in front of the air coming out...

    in either case, get it fixed..

    good luck
     
  6. shaunh82

    shaunh82 Member

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    maybe your car just doesn't like regular :D
     
  7. igo1090

    igo1090 Member

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    many of the newer nozzles are more sensitive, also. i find the kick off varies from station to station and even just pump to pump in the same station. one station i use has one pump i just cant use. it kicks off almost as soon as i start the nozzle.
     
  8. Jamie Miles

    Jamie Miles the road warrior

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    Same here!

    Nothing is blocked, especially not the filler neck. I built this car less then a month ago, and everything was clean/in good working condtion then. This has the same gas tank and filler neck that was in my '74 Grabber and it did the same thing then to. I was just talking to my dad and he says all 4 Comet's he had did the same thing. I don't see how the vent not working could cause it, because the filler neck is about 3 times bigger then the nozzel on the gas pump, meaning it should be able to easily let the air out without forcing the gas back out. And even if that was the problem, I would think even with a perfect working vent that the gas pump could dispense gas alot more quickly then that tiny vent could let out the displaced air. But now I'm just thinking outloud.

    I'm going to go pull the filler neck out and look at it. There has to be something in there that is restricting the flow of gas down the filler neck.
     
  9. Maverick73

    Maverick73 Senior Member

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    Both of my Mavericks do the same thing unless you pump it slow, has something to do with the design of the filler neck.
     
  10. Zooomzoomguy

    Zooomzoomguy Member

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    new pumps have their kick of based off pressure, and i think the design on mav gas tanks may create alot of pressure during fill ups.
     
  11. j miller

    j miller Montana MCCI state rep

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    my 4 door does the same thing ?????
     
  12. 71gold

    71gold Frank Cooper Supporting Member

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    jamie,

    does your filler pipe have the breather tube in it? one of my cars didn't so i got a filler pipe that did...frank...:bouncy:
     
  13. waynes fords

    waynes fords Member

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    Jamie most of the older cars did the same thing, its a problem with venting, older cars did not have very good venting while filling up and the air in the tank was not displaced as fast as the gas going in so it either clicks off the pump or goes slow into the tank or it sloshes back and takes along time to fill. my 64 ford did the same thing when I was in high school, good luck and glad you got one running again!!
     
  14. Jamie Miles

    Jamie Miles the road warrior

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    No, it dosen't have the vent tube. When I bought the car, it had a Granada filler neck and it did have the tube. That filler neck didn't fit correctly so I swapped the Maverick part over from my '74.

    Ohh well, I guess it's just one of those things you gotta deal with when driving an old car...
     
  15. 71gold

    71gold Frank Cooper Supporting Member

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    i have another filler pipe. i will check and see if it has the vent tube.(y)
    ...frank...:bouncy:
     

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