Oil Leak from Cylinder Block

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  • madreg
    • Feb 2026

    #1

    Oil Leak from Cylinder Block

    Hi, after a run I can see oil on the bottom fin on the cylinder block at the front of the engine. This sometimes accumualtes into a drip, cannot see where this is coming from - does the GS1000 lump suffer from oil leaks here?

    Thanks
  • Nessism
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    Super Site Supporter
    • Mar 2006
    • 35790
    • Torrance, CA

    #2
    Yes, all GS bikes do. Particularly if the cylinder head nut torquing maintenance is neglected. If you decide to replace the gaskets, make sure to only use OEM Suzuki gaskets. The aftermarket stuff is very risky, particularly Athena brand with the green base gasket. Pure junk.
    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

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    • madreg

      #3
      Cheers, something to do in the winter

      Comment

      • bwringer
        Forum LongTimer
        Bard Award Winner
        GSResource Superstar
        Past Site Supporter
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        • Oct 2003
        • 17066
        • Indianapolis

        #4
        First, find out exactly where the oil is coming from. Oil dripping from the bottom fin could be coming from almost anywhere.

        Clean the engine thoroughly, let it dry, then "paint" the engine with spray foot powder. Fire it up and the source of the leak will become apparent quickly.

        Here's an example showing why Vesrah gaskets suck:
        Last edited by bwringer; 09-10-2013, 10:10 AM.
        1983 GS850G, Cosmos Blue.
        2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
        2015 Yamaha FJ-09, Magma Red Power Corrupts...
        Eat more venison.

        Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.

        Celeriter equita, converteque saepe.

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        Comment

        • Guest

          #5
          Wow, cool idea. I had never heard of doing that before. Will file this one away for future reference. Thanks bwringer!

          Comment

          • Nessism
            Forum LongTimer
            GSResource Superstar
            Past Site Supporter
            Super Site Supporter
            • Mar 2006
            • 35790
            • Torrance, CA

            #6
            Originally posted by Sci85
            Wow, cool idea. I had never heard of doing that before. Will file this one away for future reference. Thanks bwringer!
            Great photo indeed!
            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

            • Sandro_916

              #7
              Awesome photo. Wanted to see a photo of this before trying it myself.

              Comment

              • Brendan W
                Forum Sage
                Past Site Supporter
                • Jul 2013
                • 4922
                • Wexford, Ireland

                #8
                On Ed's point about head nuts. I was blowing oil out the front and was pricing up oem gasket sets. I tightened up the head nuts, most of them 30% below, and early days but looks like I'm not getting any on the left boot and it doesn't drip after a ride out.
                I hear the advice to take nothing for granted on these machines and it's slowly going in.
                Assume nothing.
                97 R1100R
                Previous
                80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

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