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81 GS650G starting issues

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    #1

    81 GS650G starting issues

    Pulled the bike out for the first time this season and when I started it up it wouldn't turn over. I pulled the choke and it started right up and then died after about 8-12 seconds. It's done the same thing every time since and will occasionally backfire right before it dies. I'm assuming its probably my carbs are dirty but was hoping for some input from people with more experience than me. This is my first bike and I don't know much about working on bikes so any advice would help.
    Tags: None
    #2
    You are likely correct on the dirty carbs

    You need some tools and all the knowledge is available on this site and here -http://members.dslextreme.com/users/bikecliff/

    https://www.thegsresources.com/_foru...bie%20mistakes This is a good guideline for how to start wrenching

    Buy some JIS screwdrivers to start -GoFast Innovations is a good supplier
    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

    Comment

      #3
      Put it on PRI. a couple of min. before trying to start it. Then try starting it on pri.
      1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

      Comment

        #4
        Originally posted by Bren1298 View Post
        ...when I started it up it wouldn't turn over.
        Am I the only one who's confused?
        1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

        2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

        Comment

          #5
          Originally posted by rphillips View Post
          Put it on PRI. a couple of min. before trying to start it. Then try starting it on pri.
          Yes indeed....and now would be good time to check for correct petcock operation. Consider it an omen
          1981 gs650L

          "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

          Comment

            #6
            Originally posted by Bren1298 View Post
            ... and when I started it up it wouldn't turn over. ...
            Originally posted by Rob S. View Post
            Am I the only one who's confused?
            No, Rob, you and I are in the same boat here.

            There have been many times when something would "turn over, but not start",
            but every time I have ever "started it up", it's been running.

            .
            sigpic
            mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
            hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
            #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
            #2 son: 1980 GS1000G
            Family Portrait
            Siblings and Spouses
            Mom's first ride
            Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
            (Click on my username in the upper-left corner for e-mail info.)

            Comment

              #7
              He forgot to tell us if it was running ok last season for him....or if this is a winter acquisition with bonus mystery features
              1981 gs650L

              "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

              Comment

                #8
                In the past, yes, I would've been confused. But surely, after being around here for a wile, you kind'f got to learn to read between the lines. & yes, you should know, pulling the choke out works kind'f like jumper cables, & will make it turn over. Just be careful if it lands on your leg, it will hurt.
                1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

                Comment

                  #9
                  When putting the petcock on prime you still have to hit the starter button for a second or 2 for the vacuum to open the petcock and allow the fuel to flow.
                  1981 GS 1000GLX.
                  1981 GS 1000G.
                  1981 GS 650GLX.
                  1975 TS 185.
                  1972 100. Kawasaki.
                  1968 100. Suzuki.
                  1970 Z 50. Honda.
                  1984 CT 70. Honda. (Kids)
                  1982 DS 50. Suzuki. (Kids)

                  Comment

                    #10
                    Originally posted by habsdoc View Post
                    When putting the petcock on prime you still have to hit the starter button for a second or 2 for the vacuum to open the petcock and allow the fuel to flow.
                    Not on any bike I've wrenched on
                    Prime is direct bypass of the vacuum system
                    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

                    Comment

                      #11
                      Originally posted by habsdoc View Post
                      When putting the petcock on prime you still have to hit the starter button for a second or 2 for the vacuum to open the petcock and allow the fuel to flow.
                      Originally posted by Big T View Post
                      Prime is direct bypass of the vacuum system
                      Habsdoc's statement is true, but only on the '80 models with the "dreaded '80 petcock" that has no handle.

                      I have not had one apart to see the internal workings, but they DO require a 'puff' of vacuum to start the flow, which will then continue until you use a screwdriver to turn the petcock back to the RUN position or the tank runs out of gas.

                      .
                      sigpic
                      mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
                      hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
                      #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
                      #2 son: 1980 GS1000G
                      Family Portrait
                      Siblings and Spouses
                      Mom's first ride
                      Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
                      (Click on my username in the upper-left corner for e-mail info.)

                      Comment

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