Leaking oil!

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  • ATNasty
    • Mar 2026

    #1

    Leaking oil!

    So I've been doing a bunch of stuff to my. 78 gs 750.. Changed the oil and filter, change intake seals, rebuilt the carb properly(orings, new bigger jets, cleaned it up).. About to check for valve clearances.. I took the bike on a test ride around the block and it was running away better! But now it has a new oil leak.. It's not the oil pan, drain plug or that area with the oil window.. Is there other gaskets that are common to leak oil?
  • Charlie G
    Forum Guru
    Past Site Supporter
    Super Site Supporter
    • Feb 2009
    • 6440
    • Siskiyou county

    #2
    There are several places that can develop leaks. Can you give a general area, i.e left, right, front, ect.

    cg
    sigpic
    83 GS1100g
    2006 Triumph Sprint ST 1050

    Ohhhh!........Torque sweet Temptress.........always whispering.... a murmuring Siren

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    • ATNasty

      #3
      Originally posted by Triam
      It'll help us if we know what model of bike you ride.
      1978 GS750e.. That's what it says on the neck of the frame.

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      • Charlie G
        Forum Guru
        Past Site Supporter
        Super Site Supporter
        • Feb 2009
        • 6440
        • Siskiyou county

        #4
        Originally posted by ATNasty
        So I've been doing a bunch of stuff to my. 78 gs 750..
        Originally posted by Triam
        It'll help us if we know what model of bike you ride.

        sigpic
        83 GS1100g
        2006 Triumph Sprint ST 1050

        Ohhhh!........Torque sweet Temptress.........always whispering.... a murmuring Siren

        Comment

        • ATNasty

          #5
          Originally posted by Charlie G
          There are several places that can develop leaks. Can you give a general area, i.e left, right, front, ect.

          cg
          Under the bike on the left side

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          • GSX1000E

            #6
            Check the usual suspects: cam chain tensioner, oil pressure switch and starter motor O-ring to block. They all drain out of the hole/tube under the starter motor.

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            • tkent02
              Forum LongTimer
              Past Site Supporter
              • Jan 2006
              • 35571
              • Near South Park

              #7
              Clutch pushrod seal, countershaft seal are both common leaks, as is the stator over gasket and the cylinder base gasket.
              http://img.photobucket.com/albums/v5...tatesMap-1.jpg

              Life is too short to ride an L.

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              • Charlie G
                Forum Guru
                Past Site Supporter
                Super Site Supporter
                • Feb 2009
                • 6440
                • Siskiyou county

                #8
                Originally posted by GSX1000E
                Check the usual suspects: cam chain tensioner, oil pressure switch and starter motor O-ring to block. They all drain out of the hole/tube under the starter motor.

                Left side: In addition to those mentioned...excess chain oil or missing oil separation screens in the cam cover causing oil to be blown out the cam cover vent tube.

                cg
                sigpic
                83 GS1100g
                2006 Triumph Sprint ST 1050

                Ohhhh!........Torque sweet Temptress.........always whispering.... a murmuring Siren

                Comment

                • ATNasty

                  #9
                  Thanks for the replies guys. Your help is greatly appreciated!! For real I would be screwed without this website! Gonna take **** apart tomorrow and find the problem.. It's my day off.

                  Comment

                  • Carter Turk
                    Forum Sage
                    Charter Member
                    • May 2002
                    • 2289
                    • Bellingham Washington

                    #10
                    Shift shaft seal.
                    GS\'s since 1982: 55OMZ, 550ES, 750ET, (2) 1100ET\'s, 1100S, 1150ES. Current ride is an 83 Katana. Wifes bike is an 84 GS 1150ES

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                    • bwringer
                      Forum LongTimer
                      Bard Award Winner
                      GSResource Superstar
                      Past Site Supporter
                      Super Site Supporter
                      • Oct 2003
                      • 17069
                      • Indianapolis

                      #11
                      It's also very easy to pinch the oil filter cover o-ring when you install it.
                      1983 GS850G, Cosmos Blue.
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                      2015 Yamaha FJ-09, Magma Red Power Corrupts...
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