Announcement

Collapse
No announcement yet.

Stuck choke plungers on my 81 GS550E

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Stuck choke plungers on my 81 GS550E

    Hi guys

    All 4 of the plungers were stuck. I then took the carbs apart and started the cleaning process. They were dipped in carb cleaner and boiled in lemon juice.

    One of the plungers came out. When I put it back and it sat for the weekend, it was stuck again.

    Any ideas??
    sigpic 1980 GS550E

    #2
    Do a better job at cleaning. There's obviously more gunk to remove. Dump the lemon juice. Clean in dip and them spray every passage with carb cleaner. I sonic clean after dipping but not everyone has a sonic cleaner.
    http://img633.imageshack.us/img633/811/douMvs.jpg
    1980 GS1000GT (Daily rider with a 1983 1100G engine)
    1998 Honda ST1100 (Daily long distance rider)
    1982 GS850GLZ (Daily rider when the weather is crap)

    Darn, with so many daily riders it's hard to decide which one to jump on next.;)

    JTGS850GL aka Julius

    GS Resource Greetings

    Comment


      #3
      Did you soak the carbs with the plungers installed?
      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


        #4
        The carbs are pretty clean. No gunk to be seen. Here in RSA we do not have carb dip like in the USA etc. only fuel system cleaner wich is not as strong.

        The plungers are stuck so they had to be dipped and boiled while still in the carb bodies.
        sigpic 1980 GS550E

        Comment


          #5
          Now that they're loose, dip the carbs again with the plungers out. Don't dip the plungers. Use a spray cleaner to get the plungers clean. Any quality degreaser should work if you can't get a proper carb cleaner.
          http://img633.imageshack.us/img633/811/douMvs.jpg
          1980 GS1000GT (Daily rider with a 1983 1100G engine)
          1998 Honda ST1100 (Daily long distance rider)
          1982 GS850GLZ (Daily rider when the weather is crap)

          Darn, with so many daily riders it's hard to decide which one to jump on next.;)

          JTGS850GL aka Julius

          GS Resource Greetings

          Comment


            #6
            The plungers are all stuck. Cant get them out
            sigpic 1980 GS550E

            Comment


              #7
              You definitely still have a contamination problem if they're too stuck to get them out. Might have melted some of the rubber from the plungers and now it's sticking to the walls. Try to rotate the plungers and then pull them out.
              http://img633.imageshack.us/img633/811/douMvs.jpg
              1980 GS1000GT (Daily rider with a 1983 1100G engine)
              1998 Honda ST1100 (Daily long distance rider)
              1982 GS850GLZ (Daily rider when the weather is crap)

              Darn, with so many daily riders it's hard to decide which one to jump on next.;)

              JTGS850GL aka Julius

              GS Resource Greetings

              Comment


                #8
                I did try to rotate them but they wont budge. They are really stuck. Feels like they are part of the carb bodies
                sigpic 1980 GS550E

                Comment


                  #9
                  dip them again and pull them out. Once out, dip the carb bodies all over again and then degrease the entire carb body and plungers. If you can't find carb cleaner then brake cleaner will work.
                  http://img633.imageshack.us/img633/811/douMvs.jpg
                  1980 GS1000GT (Daily rider with a 1983 1100G engine)
                  1998 Honda ST1100 (Daily long distance rider)
                  1982 GS850GLZ (Daily rider when the weather is crap)

                  Darn, with so many daily riders it's hard to decide which one to jump on next.;)

                  JTGS850GL aka Julius

                  GS Resource Greetings

                  Comment


                    #10
                    Ill dip them again.
                    sigpic 1980 GS550E

                    Comment


                      #11
                      You might want to try a heat gun on the carbs to heat them up and hopefully break down the varnish holding the plunger in the carb body. This works great to remove stuck slides anyway.
                      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


                        #12
                        Thanks. Will try the heat gun. Is there any chance that I can melt the carb?
                        sigpic 1980 GS550E

                        Comment


                          #13
                          Theoretically yes, but in practice no. I've had the same problem, and used a propane gun for maybe thirty seconds at a time. It didn't free the plungers, but didn't harm the carb body. I drilled mine out eventually, but there is very little margin for error, especially as you get toward the far end.
                          1980 GS550ET

                          Comment


                            #14
                            Since he's had these out once I'm betting that there isn't a lot keeping them in. I'll bet a little heat or a quick redip will get them back out.
                            http://img633.imageshack.us/img633/811/douMvs.jpg
                            1980 GS1000GT (Daily rider with a 1983 1100G engine)
                            1998 Honda ST1100 (Daily long distance rider)
                            1982 GS850GLZ (Daily rider when the weather is crap)

                            Darn, with so many daily riders it's hard to decide which one to jump on next.;)

                            JTGS850GL aka Julius

                            GS Resource Greetings

                            Comment


                              #15
                              I dipped the carbs and used a heat gun. They wont budge. I tried pulling and twisting them with pliers. Nothing happens!
                              sigpic 1980 GS550E

                              Comment

                              Working...
                              X