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Oil Filler cap weeping

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    Oil Filler cap weeping

    Hi guys, I'm trying out sort out a few leaks that I have. One that is really vexing me is the oil filler cap on the clutch cover. I bought a new o-ring, but it still weeps ( seemingly a lot). It wets about about a quarter of the clutch cover after a ride of about 10-20 miles. I'm starting to wonder if this being caused by excessive pressure in the crankcase. Any thoughts? I was running pods fora while and my breather tube was venting to the atmosphere. During colder weather, I was seeing steam come out, so I generally figured that the breather wasn't clogged. I have since replaced the OEM airbox, but I assume that te situation is the same. Although, maybe it isn't breathing enough. I don't know but this doesn't seem right to me.

    #2
    Nothing? C'mon guys.

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      #3
      Makes sense that breather is clogged, take a look.
      Is the O ring in the cap the correct size?
      http://img.photobucket.com/albums/v5...tatesMap-1.jpg

      Life is too short to ride an L.

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        #4
        Just curious, are you running an oil cooler??
        '85 GS550L - SOLD
        '85 GS550E - SOLD
        '82 GS650GL - SOLD
        '81 GS750L - SOLD
        '82 GS850GL - trusty steed
        '80 GS1100L - son's project bike
        '82 GS1100G - SOLD
        '81 GS1100E - Big Red (daily rider)

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          #5
          Sounds like something is wrong with the O-ring in the cap; even if crankcase pressure is building up, the O-ring should hold back leakage.
          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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            #6
            Are the mating surfaces where the o ring contacts the clutch cover and inside the cap in good shape, Ted

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              #7
              Even without a cap it shouldn't leak really... at least I don't think so...

              Try removing it while running to see if you have pressure built up there.

              I wouldn't be surprised if the metal tube connection on the airbox isn't completely clogged with rust....

              Dan
              1980 GS1000G - Sold
              1978 GS1000E - Finished!
              1980 GS550E - Fixed & given to a friend
              1983 GS750ES Special - Sold
              2009 KLR 650 - Sold - gone to TX!
              1982 GS1100G - Rebuilt and finished. - Sold
              2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

              www.parasiticsanalytics.com

              TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

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                #8
                I'll check those things. The o-ring is from Bikebandit's microfiche and it arrived in a Suzuki labeled bag. It fit well and I cleaned the lands that it was recessed in to as well as the mating surface on the cover. Like I said, the breather seemed to pump out steam when I had pods on it ( the weather was cold then). However, it may be that the air box is clogged. I hadn't considered that.

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