Life after resuection

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    #1

    Life after resuection

    I bought my son an 81 GS 450 L. It had been sitting for about 2 years. The P/O drained the fuel and put mineral spirits in the tank and let fill the carbs. We drained that out and the carbs looked very clean to the eye so back together it went. All the maint. that was lacking probably 4 a long time was addressed and taken care of. It runs fine except the idle seems to be a bit up/down. We ran two tanks of gas through it and it does seem quite a bit better but there is still a slight noticeable fluctuation at idle. The O-Rings in the intakes are new. So, carbs- rebuild or run more gas through and see what happens?
  • cowboyup3371
    Forum LongTimer
    Past Site Supporter
    • Apr 2010
    • 13996
    • In Ohio Now

    #2
    You need to clean those carbs properly. Although they might "look fine" on the outside, there are passages you can't see that get clogged with crud. Follow the procedures listed on Basscliff's site thoroughly.
    Cowboy Up or Quit. - Run Free Lou and Rest in Peace

    1981 GS550T - My First
    1981 GS550L - My Eldest Daughter's - Now Sold
    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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    • Nessism
      Forum LongTimer
      GSResource Superstar
      Past Site Supporter
      Super Site Supporter
      • Mar 2006
      • 35791
      • Torrance, CA

      #3
      Thought you said all the maintenance was addressed? Apparently not.

      Short cut are long cuts when it come to maintenance, and the carbs in particular. I'd clean them properly and replace all the various O-rings. Vacuum sync as well.
      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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      • Crage

        #4
        Clean carbs, new orings in carbs.

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        • Guest

          #5
          Welcome! Glad to see another 450 popping up

          As above, a full clean and new O rings from www.cycleorings.com will help you no doubt.

          Also, you may find the intake boots from the carbs to the head are old, hard, and potentially a little shrunken which will prevent a good air seal even with new O rings.

          Last I checked you can still buy new from Suzuki for about $50 for the pair.

          Made a night and day difference on mine...

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