Carb Query

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  • DougieH

    #1

    Carb Query

    Just stripped the carbs down on the kitchen table. Didnt make a mess, but my wife was complaining about the smell of old petrol.

    My question is this. Carbs 1 and 2 were all gunged up with a black oily substance, carbs 3 and 4 were clean inside, but they had a light brown powder in the bottom of the float bowls. Anyone know why?

    Thanks for looking,

    Doug
  • Nessism
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    Super Site Supporter
    • Mar 2006
    • 35788
    • Torrance, CA

    #2
    Originally posted by DougieH
    Just stripped the carbs down on the kitchen table. Didnt make a mess, but my wife was complaining about the smell of old petrol.

    My question is this. Carbs 1 and 2 were all gunged up with a black oily substance, carbs 3 and 4 were clean inside, but they had a light brown powder in the bottom of the float bowls. Anyone know why?

    Thanks for looking,

    Doug

    The gunk is congealed gas. Get some carb dip and soak the body/parts after complete disassembly.

    This photo is of the carbs off my '79 GS550. Not pretty but cleaned up okay.

    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

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    Comment

    • tconroy

      #3
      Originally posted by Nessism
      The gunk is congealed gas. Get some carb dip and soak the body/parts after complete disassembly.

      This photo is of the carbs off my '79 GS550. Not pretty but cleaned up okay.

      Are you sure that's not some alien life form from another planet ?????!!!! I have never seen such a mess! don't tell me that bike ran!!!! How many decades did it sit without running?

      Comment

      • Nessism
        Forum LongTimer
        GSResource Superstar
        Past Site Supporter
        Super Site Supporter
        • Mar 2006
        • 35788
        • Torrance, CA

        #4
        Originally posted by tconroy
        How many decades did it sit without running?
        Petcock was left on prime so...drip...drip...drip...for 25 years.:shock:
        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

        • TheCafeKid

          #5
          The light brown poweder could be dirt..but it could also be rust from your tank...after your carbs are done...or while even...have a look at your petcock filter...you may want to even consider an inline fuel filter...but if you do so, make sure the one you get will sit vertically or relatively so.

          Comment

          • MissFabulous

            #6
            Originally posted by tconroy
            Are you sure that's not some alien life form from another planet ?????!!!! I have never seen such a mess! don't tell me that bike ran!!!! How many decades did it sit without running?
            Looks like Folgers to me :shock:

            Originally posted by DougieH
            Just stripped the carbs down on the kitchen table. Didnt make a mess, but my wife was complaining about the smell of old petrol.

            My question is this. Carbs 1 and 2 were all gunged up with a black oily substance, carbs 3 and 4 were clean inside, but they had a light brown powder in the bottom of the float bowls. Anyone know why?

            Thanks for looking,

            Doug
            How long did the bike sit? Keep in mind that if it's on the side stand, especially for a long time, gravity is going t pull any gas/etc in the carbs to the left side of the bike. What you saw on the right (3&4) might have just been a dried up version of what is on the left. I'll also second checking for rust.

            Comment

            • robertbarr
              Forum Sage
              Past Bard Award Winner
              GSResource Superstar
              • Sep 2005
              • 2721
              • Joliet, Illinois

              #7
              Here's how clean you want them.

              You want the carbs at least as clean as these:

              and God said, "Let there be air compressors!"
              __________________________________________________ ______________________
              2009 Suzuki DL650 V-Strom, 2004 HondaPotamus sigpic Git'cha O-ring Kits Here!

              Comment

              • TheCafeKid

                #8
                Robert i will buy those off you right now for $150!! Ive been looking for a set exactly like those!! :-D

                Comment

                • Guest

                  #9
                  Originally posted by TheCafeKid
                  Robert i will buy those off you right now for $150!! Ive been looking for a set exactly like those!! :-D
                  Do I hear $151.50?????????? \\/

                  Comment

                  • hampshirehog
                    Forum LongTimer
                    Past Site Supporter
                    • Oct 2007
                    • 12675
                    • Hampshire. UK

                    #10
                    You've got the extra $1.50 if you can confirm that all that brown powdery stuff is in fact extra power fuel additive and not the dregs from a bottle of Old Peculiar!
                    79 GS1000S
                    79 GS1000S (another one)
                    80 GSX750
                    80 GS550
                    80 CB650 cafe racer
                    75 PC50 - the one with OHV and pedals...
                    75 TS100 - being ridden (suicidally) by my father

                    Comment

                    • DougieH

                      #11
                      Wow, my bike sat for 8 to 10 years at the bottom of the garden, but the carbs were a lot cleaner than that. Thanks for the replies.

                      Doug

                      Comment

                      • Guest

                        #12
                        Originally posted by hampshirehog
                        You've got the extra $1.50 if you can confirm that all that brown powdery stuff is in fact extra power fuel additive and not the dregs from a bottle of Old Peculiar!
                        Lost in translation. :? :-D

                        Comment

                        • Dink

                          #13
                          Originally posted by chef1366
                          Lost in translation. :? :-D
                          There was a translation??:shock::-D

                          Dink

                          Comment

                          • TheCafeKid

                            #14
                            Originally posted by Dink
                            There was a translation??:shock::-D

                            Dink
                            See barley scum??

                            Comment

                            • Guest

                              #15
                              You all are Peculiar. *

                              \\/

                              I got the feeling it had something to do with a bottle of Rot Gut. :-D

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