Leaky fuel tank at sender..

Fuel and Air Systems

  1. grassy

    grassy Well-Known Member

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    I am ready to start banging my head against the wall.

    Last year, when I re installed our gas tank, I bought a new seal, cleaned up that section of the tank and re installed a new sender. It leaked when the tank was filled past the sender.

    So I decided to replace the sender since we were going to pull the tank anyway.

    Pulled/drained the tank. Took it off. removed the old sender. Cleaned around the sender even though it was quite clean. Installed new sender and another new gasket. Did a quick test. No leaks.

    Filled up tank. All was ok. Went out this am..lost 1/4 tank of gas and you can smell it gas quite easily..

    Re doing the steps above again would be an excessive in futility...

    Any suggestions ?

    Thanks
    Ian.
     
  2. Bad Sport

    Bad Sport HALF A BUBBLE OFF Staff Member FABO Gold Member

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    Do you have the old lock ring by chance, Ian?

    The new ones are junk, and have a difficult time applying enough pressure to seal properly.

    I had the same issue, as have many others here.
     
  3. grassy

    grassy Well-Known Member

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    Well damn, no...I think I tossed it..but I had used the original the first time around..

    Is there a plan b or should I start looking for a used one ?

    Thanks, Ian.
     
  4. Bad Sport

    Bad Sport HALF A BUBBLE OFF Staff Member FABO Gold Member

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    Well, you could pull it apart and use the rubber gasket to make another thin gasket to compensate.

    The gasket you make should not be real thick. Put it back together using the rubber gasket, then the sender, then the gasket you made, then the lock ring.

    Essentially what you are doing is taking up some of the space that the lock ring is lacking.

    Also make sure the tangs on the tank itself aren't pushed out.

    When installing the lock ring, don't use just one tab to seat it, use alternating motions so to keep it centered.
     
  5. grassy

    grassy Well-Known Member

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    thanks...so the tank has to come off again...darn....

    I shall try this..

    Ian:)
     
  6. Bad Sport

    Bad Sport HALF A BUBBLE OFF Staff Member FABO Gold Member

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    Not really, I did mine in the car, 74 Dart Sport.

    Just get enough fuel out so it's not running out on your face, lol.

    Also I recommend using a brass tool to set the lock ring, sparks and gas fumes don't play nice together.
     
  7. 69_340_GTS

    69_340_GTS Well-Known Member

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  8. krazykuda

    krazykuda FABO Gold Member FABO Gold Member

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  9. dart4forte

    dart4forte FABO Gold Member FABO Gold Member

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    Had the same problem, here's what I did. The small tanks on the tank are usually ben ourwards. Take some time to gently tape them back into place. The next thing I did was to use brake fluid on the gasket. Does two things. lubes then rubber seal to ease installing the ring and after some time the rubber will swell from the brake fluid. Just an FYI. There was a member here that was selling NOS gas snder rings. Bought two for myself. He may have some more.
     
  10. grassy

    grassy Well-Known Member

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    Halifaxhops thread is closed....and thanks for offering me yours but I cannot take your last one (yet).

    When we had the tank out last, we pounded softly on the tabs..

    I will try the permtex product...this may do the trick, if not, I may be back :)

    The kid can still run the car but keep it under 1/2 ....

    I shall report back.

    thanks
    Ian.
     
  11. Pawned

    Pawned N.R.A. Lifetime Member - And damn proud of it FABO Gold Member

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    I took the liquid gasket (blue) and put a bead around the hole. I then placed the new gasket on the blue stuff. Added another bead on the gasket and then put the sender on it. I put the locking ring on it and then put the blue stuff all around and in the area of the outside of the sender.

    Have used that twice and it worked great.
     
  12. mvh

    mvh FABO Gold Member FABO Gold Member

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    I was wondering if a little pliers action on the lock ring would do it.

    There's no need to pull the tank -- I just had my sender out and back in with a new gasket in 20 minutes.
     
  13. 71swing

    71swing Well-Known Member

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    I bought a fuel cell
     
  14. Dubob

    Dubob Well-Known Member

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    I bought one of these when I installed my new fuel tank and sender. Looks thicker than the one that was with the replacement sender. Don't know about leaks yet. Not running.

    http://www.manciniracing.com/seunlori.html
     
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