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Can't put gas in nearly empty fuel tank - spills out neck

This is a discussion on Can't put gas in nearly empty fuel tank - spills out neck within the General Help forums, part of the LSx Technical Help Section category; I have an 01 Pontiac Firebird Formula. When I went to put gas in it today (the tank was nearly ...

  1. #1
    Junior Member
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    black
    2001 Firebird Formula

    Can't put gas in nearly empty fuel tank - spills out neck

    I have an 01 Pontiac Firebird Formula. When I went to put gas in it today (the tank was nearly empty), the gas immediately spilled out as if it were over filled. Any ideas as to what could cause this & how I can fix it? Any input will be greatly appreciated!!!!!

  2. #2
    Clogged fill pipe or maybe your valve at the gas cap is stuck.

  3. #3
    Giant Dicks Car Club Zapper2003's Avatar
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    2005 Ram
    1978 Firebird

    Can't put gas in nearly empty fuel tank - spills out neck

    sounds like the anti spill check ball in the filler neck (tank end) is stuck. It's designed to shut off flow out of the filler neck in the event of a rollover.

  4. #4
    Did not know this, good info.

  5. #5
    024mula 024mula's Avatar
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    silver
    '02 Firebird Formula

    Quote Originally Posted by Zapper2003 View Post
    sounds like the anti spill check ball in the filler neck (tank end) is stuck. It's designed to shut off flow out of the filler neck in the event of a rollover.
    If that is the issue, what can be done to fix the problem?
    2002 Firebird Formula - 5.7 Liter - "Last of the Breed"

  6. #6
    Spaz is My Mentor SMWS6TA's Avatar
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    Navy Blue Metallic
    98 T/A w/a little mods...

    Find a long enough and narrow rod like a coat hanger stretched out that you can try to push the check ball back open. Otherwise it will mean going into the tank.

    If you have to go in you can either drop the tank or do the access door panel mod (be careful when doing this). I've done both ways in getting to the tank, the trap door mod is by far my favorite.

  7. #7
    024mula 024mula's Avatar
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    silver
    '02 Firebird Formula

    Thats good to know, thanks guys.

    Hope is will help GM Formula 01.

  8. #8
    Trap door mod looks very interesting, but what smws6ta said, be careful.

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