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Fuel leaking down the fuel tap to tank screws

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    Fuel leaking down the fuel tap to tank screws

    Nearing the end on a 78 GS1000 and noticed that fuel was leaking down the thread on the fuel tap to tank screws. I would have thought these would be captivated in tank but obviously not. Is PTFE tape ok for these or is there a better solution. So close to getting it on the road again but the little things slow me down.gs1000.jpg

    #2
    Pick up some new dowty washers (rubber on the inside)
    sigpic
    Cowboy Up or Quit. - Run Free Lou and Rest in Peace

    1981 GS550T - My First
    1981 GS550L - My Eldest Daughter's
    2007 GSF1250SA Bandit - My touring bike

    Sit tall in the saddle Hold your head up high
    Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
    and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

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      #3
      Have a look here

      In addition to the oblong o-ring seal (4) there are supposed to be gaskets (6) under the heads of the screws.
      I imagine the passage of time has not done them any favours if they are even still there.
      97 R1100R
      Previous
      80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

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        #4
        Have a look here https://www.ebay.com/itm/Dowty-Washe...kAAOSwPjhb5IIO

        i think they are 5 mm but ​ check first, has Brendon says it could be the petcock gasket like this
        Find many great new & used options and get the best deals for Suzuki petcock gasket seal o-ring gt750 gt550 gt380 gs1000 gs850 gs750 gs550 oem at the best online prices at eBay! Free shipping for many products!


        i use Dowty washers for the sump/ oil drain plug
        Last edited by fastbysuzuki; 02-12-2021, 10:46 AM.
        The big guy up there rides a Suzuki (this I know)
        1981 gs850gx

        1999 RF900
        past bikes. RF900
        TL1000s
        Hayabusa
        gsx 750f x2
        197cc Francis Barnett
        various British nails

        Comment


          #5
          Originally posted by fastbysuzuki View Post
          i think they are 5 mm but ​ check first, ...
          I would say they are 6mm, as they fit on 6mm bolt.

          If your local hardware store does not have much metric, get a 1/4" washer.

          .
          sigpic
          mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
          hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
          #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
          #2 son: 1980 GS1000G
          Family Portrait
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          Mom's first ride
          Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
          (Click on my username in the upper-left corner for e-mail info.)

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            #6
            I asked for sealing washers one time and the hardware guy was non-plussed, thinking CEILING washers.
            1983 GS 1100 Guided Laser
            1983 GS 1100 G
            2000 Suzuki Intruder 1500, "Piggy Sue"
            2000 GSF 1200 Bandit (totaled in deer strike)
            1986 Suzuki Cavalcade GV 1400 LX (SOLD)

            I find working on my motorcycle mildly therapeutic when I'm not cursing.

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              #7
              Originally posted by 1948man View Post
              I asked for sealing washers one time and the hardware guy was non-plussed, thinking CEILING washers.
              Wonder what he'd a done if you asked for a mill bastard.
              Roger

              Current rides
              1983 GS 850G
              2003 FJR 1300A
              Gone but not forgotten 1985 Rebel 250, 1991 XT225, 2004 KLR650, 1981 GS850G, 1982 GS1100GL, 2002 DL1000, 2005 KLR650, 2003 KLX400

              Comment


                #8
                Thanks for all of these suggestions, I've gone for some viton o rings between fuel tap and the tank. Hopefully these will seal around the bolt and the tank when tightened.

                Comment


                  #9
                  Originally posted by Wheelies View Post
                  Thanks for all of these suggestions, I've gone for some viton o rings between fuel tap and the tank. Hopefully these will seal around the bolt and the tank when tightened.
                  Get some silicone grease on them and be careful tightening. They will try find any excuse to twist and tear. I would be happier making something up from gasket paper.
                  A cereal box with grease sealed up a tap for me and I was not inclined to change it.
                  97 R1100R
                  Previous
                  80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

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                    #10
                    Fiber washers at the local hardware store, there's an english size that's just a tad small that you can ream out a bit with some sandpaper to make it fit.
                    1980 Yamaha XS1100G (Current bike)
                    1982 GS450txz (former bike)
                    LONG list of previous bikes not listed here.

                    These aren't my words, I just arrange them

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                      #11
                      The OEM part number for the sealing washers on the bolts for the fuel tap is 09168-06023.
                      1981 GS850G "Blue Magic" (Bike Of The Month April 2009)

                      1981 GS1000G "Leo" (Bike Of The Month August 2023)

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