Bike won't start after carb cleaning

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  • Clumzi

    #1

    Bike won't start after carb cleaning

    So I pulled the carbs apart, cleaned them, figured out why they were pouring gas (bent float pin, the float was sticking up), stuck them back in, reconnected everything and the bike doesn't want to start. It may just be that the battery is a little weak (it's on a charger now) but I'm not so sure. It seems like it's strong enough to at least kick the bike over. Do I have to do something special to get gas back in the carbs? Anything else I might be forgetting? -nick
  • Larry D
    Forum Sage
    Past Site Supporter
    • Jul 2008
    • 4926
    • Indianapolis,IN

    #2
    Originally posted by Clumzi
    So I pulled the carbs apart, cleaned them, figured out why they were pouring gas (bent float pin, the float was sticking up), stuck them back in, reconnected everything and the bike doesn't want to start. It may just be that the battery is a little weak (it's on a charger now) but I'm not so sure. It seems like it's strong enough to at least kick the bike over. Do I have to do something special to get gas back in the carbs? Anything else I might be forgetting? -nick
    Might wanna try some new plugs. And did you do this before you reinstalled the carbs ?

    Larry D
    1980 GS450S
    1981 GS450S
    2003 Heritage Softtail

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    • Big T
      Forum LongTimer
      Past Site Supporter
      Super Site Supporter
      • Mar 2005
      • 12392
      • West Slope, OR

      #3
      If your fuel tap has a prime position, turn that on for about a minute. Then turn it back

      Yes, a low battery will affect the bike's ability to fire up
      1978 GS 1000 (since new)
      1979 GS 1000 (The Fridge, superbike replica project)
      1978 GS 1000 (parts)
      1981 GS 850 (anyone want a project?)
      1981 GPZ 550 (backroad screamer)
      1970 450 Mk IIID (THUMP!)
      2007 DRz 400S
      1999 ATK 490ES
      1994 DR 350SES

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      • Guest

        #4
        Do you have the 80 leverless petcock?

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        • trippivot
          Forum Sage
          Past Site Supporter
          • Aug 2006
          • 2815
          • Des Moines , IA

          #5
          use ETHER quick start
          SUZUKI , There is no substitute

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          • Steve
            GS Whisperer
            • Jun 2005
            • 35925
            • southwest oHIo

            #6
            Originally posted by trippivot
            use ETHER quick start
            but use it sparingly. Too much ether has very interesting results, sometimes they are expen$sive.

            .
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            • Baatfam
              Forum LongTimer
              Past Site Supporter
              Super Site Supporter
              • Jul 2006
              • 18752
              • Knoxville, TN

              #7
              Originally posted by Clumzi
              So I pulled the carbs apart, cleaned them, figured out why they were pouring gas (bent float pin, the float was sticking up), stuck them back in, reconnected everything and the bike doesn't want to start. It may just be that the battery is a little weak (it's on a charger now) but I'm not so sure. It seems like it's strong enough to at least kick the bike over. Do I have to do something special to get gas back in the carbs? Anything else I might be forgetting? -nick
              What method did you use to clean them?
              Bob T. ~~ Play the GSR weekly photo game: Pic of Week Game
              '83 GS1100E ~ '24 Triumph Speed 400 ~ '01 TRIUMPH TT600 ~ '67 HONDA CUB

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              • Clumzi

                #8
                I carb dipped them to clean and yes it does have the '80 leverless petcock. I forgot to put the thing on prime. I'm going to try that now with the battery all nice and charged. I'll report back whether or not it kicked. -nick

                EDIT: I just got back in. No good. Battery is fully charged, the starter is trying but it won't go. I feel like I'm forgetting something.
                Last edited by Guest; 12-06-2008, 01:11 PM.

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                • Larry D
                  Forum Sage
                  Past Site Supporter
                  • Jul 2008
                  • 4926
                  • Indianapolis,IN

                  #9
                  Originally posted by Clumzi
                  I carb dipped them to clean and yes it does have the '80 leverless petcock. I forgot to put the thing on prime. I'm going to try that now with the battery all nice and charged. I'll report back whether or not it kicked. -nick

                  EDIT: I just got back in. No good. Battery is fully charged, the starter is trying but it won't go. I feel like I'm forgetting something.
                  Sounds like you're not getting spark. What is the condition of your plugs ? How's weather in Olympia today ? Have you done a valve adjustment lately ?

                  These bikes can be difficult to fire if the valves are out of adjustment and it's cold weather......not to mention your plugs may be fouled.
                  Larry D
                  1980 GS450S
                  1981 GS450S
                  2003 Heritage Softtail

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                  • Guest

                    #10
                    The 80 petcock still needs vacuum to start the prime. Take off the vacuum line from the #2 carb and suck on it to activate the fuel flow.

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                    • Clumzi

                      #11
                      Bike is running! I think it was the vacuum thing.

                      These bikes are screwy! But its damn nice to hear the thing run again . -nick

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