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67 GAS LEAK

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  • Marc N.
    Expired
    • August 31, 1998
    • 97

    67 GAS LEAK

    I HAVE A 67 COUPE 427/390 AND IT HARDLY GETS ANY USE SINCE A FRAME ON. I NOTICED WHILE IN THE GARAGE A SLIGHT SMELL OF GAS. AFTER INVESTIGATING, I NOTICES THAT THERE WAS A SLIGHT DRIP (ABOUT A DROP EVERY 45-60 SECONDS) COMING OUT OF THE BOTTOM OF THE GAS TANK AT THE METAL ROUND PLUG/CAP WHERE THERE IS ALSO A RUBBER CAP CONNECTION ATTACHED ON IT. DRIPPING DOWN THE SPARE TIRE COVER, CONTINUING DOWN THE COVER SINCE IT IS ON AN ANGLE AND DROPPING OFF AT THE FRONT BOTTOM OF THE COVER. I GOT UNDER AND TRIED TO TURN THE CAP, POSSIBLY MOVING IT A CENTERMETER, CLEANED IT OFF WITH A PAPER TOWEL AND PUT A COFFEE CAN UNDER THE END DRIP. IT CUT THE DRIPPING DOWN TO 25%. HOW CAN I STOP IT COMPLETELY AND IS IT A CONCERN. NOTE: THIS IS A NEW GAS TANK...PERFECT... PLEASE ADVISE AND THANKS
  • Rick Garrett

    #2
    Re: 67 GAS LEAK

    I had a similar problem with my vette. There is a circular rubber gasket that tends to leak over time at the fuel sender unit(I installed a new one that leaked also). First make sure the fuel sender unit is tight (it takes a special tool to tighten). If that doesnt stop the leak, you have to drain the gas tank and replace the gasket. Zip products web site has a guide on how to replace the unit step by step. One hint, never use an open drop light when working around gas. I happened to use one when I did this procedure and a drop of gas splashed on it and both my vettes,house, and me ended up in flames.

    Comment

    • Rick Garrett

      #3
      Re: 67 GAS LEAK

      I had a similar problem with my vette. There is a circular rubber gasket that tends to leak over time at the fuel sender unit(I installed a new one that leaked also). First make sure the fuel sender unit is tight (it takes a special tool to tighten). If that doesnt stop the leak, you have to drain the gas tank and replace the gasket. Zip products web site has a guide on how to replace the unit step by step. One hint, never use an open drop light when working around gas. I happened to use one when I did this procedure and a drop of gas splashed on it and both my vettes,house, and me ended up in flames.

      Comment

      • Joe L.
        Beyond Control Poster
        • February 1, 1988
        • 43203

        #4
        Re: 67 GAS LEAK

        Marc----

        There are two possibilities that I can think of: one is easy to deal with and the other not so easy.

        First, remove the sending unit to gas gauge wire. Your sending unit should have a small nut which retains the sending unit terminal to the sending unit base flange. Very gently tighten this nut with an open end wrench, but DON'T "hog" it down. That may solve your problem.

        If it doesn't, it probably means that your sending unit rubber gasket was improperly installed or damaged. That means that you'll have to drain the tank and remove the cam-lock retainer and gasket. I strongly recommend obtaining the proper tool for this job. I have the Kent-Moore tool(J-23346) but this is expensive. I understand that Zip sells a functional tool for about $15.
        In Appreciation of John Hinckley

        Comment

        • Joe L.
          Beyond Control Poster
          • February 1, 1988
          • 43203

          #5
          Re: 67 GAS LEAK

          Marc----

          There are two possibilities that I can think of: one is easy to deal with and the other not so easy.

          First, remove the sending unit to gas gauge wire. Your sending unit should have a small nut which retains the sending unit terminal to the sending unit base flange. Very gently tighten this nut with an open end wrench, but DON'T "hog" it down. That may solve your problem.

          If it doesn't, it probably means that your sending unit rubber gasket was improperly installed or damaged. That means that you'll have to drain the tank and remove the cam-lock retainer and gasket. I strongly recommend obtaining the proper tool for this job. I have the Kent-Moore tool(J-23346) but this is expensive. I understand that Zip sells a functional tool for about $15.
          In Appreciation of John Hinckley

          Comment

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