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My gas tank appears to be leaking engine oil

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    #1

    My gas tank appears to be leaking engine oil

    There is oil on the underside of it, on the wires, running down the front and sides of the bike. Its enough oil its smoky when I stop.

    At first I thought the tach wire, but I tighened it and I dont see how that would fling oil up to the gas tank and top of engine. The breather cover is soaked.

    Anything I should try before buying new gaskets?
    GS1000G 1981
    Tags: None
    #2
    Clean and dry everything. Spray the whole top of engine and all gasket cracks with powdered foot spray. Start bike. Easy to see where the leaks are.
    Rich
    1982 GS 750TZ
    2015 Triumph Tiger 1200
    BikeCliff's / Charging System Sorted / Posting Pics
    Destroy-Rebuild 750T/ Destroy-Rebuild part deux

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      #3
      valve cover gasket leaks are common, oil can end up all over while riding. Rich has the right idea....clean and investigate
      1983 GS 1100 ESD :D

      Comment

        #4
        Originally posted by Noreg View Post
        The breather cover is soaked.
        Can't oil come out the breather under certain circumstances?
        1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

        2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

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          #5
          Is the oem gasket yellow?

          Ill try to clean it up when the engine gets cold.

          Right next to the tach cable the gasket stops being as visible I suspect that might be the place.

          Wonder if the bike shop can quickly get me parts.

          Edit: https://imgur.com/a/fXIbXx2 pictures that may or may not be helpfull
          Last edited by Noreg; 08-15-2020, 09:41 AM.
          GS1000G 1981

          Comment

            #6
            Do you have a hose attached to the breather cover nipple?
            Ed

            To measure is to know.

            Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

            Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

            Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

            KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

            Comment

              #7
              Originally posted by Nessism View Post
              Do you have a hose attached to the breather cover nipple?
              The one that goes to the airbox?
              GS1000G 1981

              Comment

                #8
                That'll definitely smoke if it comes loose. It gives your clothes that nice-just rode a motorcycle- fragrance too.
                Roger

                Us states ridden (2024_10_06 18_48_44 UTC).png​

                ​

                Comment

                  #9
                  Originally posted by Rob S. View Post
                  Can't oil come out the breather under certain circumstances?
                  Oil VAPOR, yes, but only if there is not a hose connecting the breather cover to the airbox.

                  You have pods on your bike, so you are not accustomed to that concept.

                  .
                  sigpic
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                  #2 son: 1980 GS1000G
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                  Comment

                    #10
                    Originally posted by Burque73 View Post
                    That'll definitely smoke if it comes loose. It gives your clothes that nice-just rode a motorcycle- fragrance too.
                    Smoke is coming from the exhaust parts that the oil hits, then it evaporates or burns and makes smoke.
                    GS1000G 1981

                    Comment

                      #11
                      Originally posted by Noreg View Post
                      Smoke is coming from the exhaust parts that the oil hits, then it evaporates or burns and makes smoke.
                      Gotcha....
                      Roger

                      Us states ridden (2024_10_06 18_48_44 UTC).png​

                      ​

                      Comment

                        #12
                        I guess I need to clean it, figure out where the leak is from, and then ride it for a long trip to measure how much oil I lose per kilometer.

                        A bit worried about my Oslo trip now.

                        Could I just use liquid gasket?
                        GS1000G 1981

                        Comment

                          #13
                          Originally posted by Steve View Post
                          Oil VAPOR, yes, but only if there is not a hose connecting the breather cover to the airbox.

                          You have pods on your bike, so you are not accustomed to that concept.
                          But what I wouldn't give for that just-rode-a-motorcycle fragrance. (I think I'll go rub some wrenches on my ribs.)
                          1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

                          2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

                          Comment

                            #14
                            50 mph wind, from riding a bike, will blow oil where you wouldn't think, from where you wouldn't think. Tightening the tach cable?? there are 2 or 3 seals & "O" rings in that little rascal. It takes a whale of a (very baaad) oil leak to make the eng. show low of oil within a few hundred miles.
                            1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

                            Comment

                              #15
                              You obviously don't know the oil consumption habits of my 1000E. To make matters worse, then are no areas that show leakage.
                              Larry

                              '79 GS 1000E
                              '93 Honda ST 1100 SOLD-- now residing in Arizona.
                              '18 Triumph Tiger 800 (gone too soon)
                              '19 Triumph Tiger 800 Christmas 2018 to me from me.
                              '01 BMW R1100RL project purchased from a friend, now for sale.

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