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Bad petcock?

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    #16
    Well folks, after all that nonsense i did have vacuum at the port on the #2 carb, however it was partially blocked by a little piece of something. i ran some safety wire/lock wire through to port and ran it for a few minutes in ON, worked like a charm.

    its always the easiest fix i guess, still had a bad petcock previously but my guess is a piece of the plug i had in the vacuum line while doing carb vacuum synchs came off and was just in the way enough to create issues. Thanks to everyone for the ideas and input!
    82 1100EZ 16k miles

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      #17
      I just put mine through an ultrasonic machine for a few minutes. I'll report be back if there negative results.

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        #18
        I suspect it was part of the check valve from the petcock that holds a constant vacuum on prime. Bet it got sucked down towards the carb. When I opened up my original petcock, that piece was all but falling out from years of degradation. And they don't give you that piece in a rebuild kit. Not sure you could replace it anyways where it sits.

        Glad to hear you figured it out!!
        - David
        80 GS850GL, 82 GS1100G
        Arlington, TX
        ​https://visitedstatesmap.com/image/ARMNMTNDSDTXsm.jpg

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          #19
          Holds a constant vacuum on PRI.??? No type of vacuum needed from anywhere for PRI. to open fuel flow... Yes, glad all good.
          1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

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            #20
            On my GL... has the really flat one with only ON and PRI. To prime you must select prime and hit the starter momentarily to create a constant vacuum. When you switch back to ON it releases vacuum and only on when running and getting vacuum from the carb.
            - David
            80 GS850GL, 82 GS1100G
            Arlington, TX
            ​https://visitedstatesmap.com/image/ARMNMTNDSDTXsm.jpg

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              #21
              See below from the service manual (#5)-

              - David
              80 GS850GL, 82 GS1100G
              Arlington, TX
              ​https://visitedstatesmap.com/image/ARMNMTNDSDTXsm.jpg

              Comment

                #22
                Originally posted by dgates1 View Post
                On my GL... has the really flat one with only ON and PRI.
                No reserve? Don't run out of gas!
                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.

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                  #23
                  Is it possible that there is something in the carb mount on #2 that could be blocking the vacuum outlet tube from the inside?

                  V
                  Gustov
                  80 GS 1100 LT, 83 1100 G "Scruffy"
                  81 GS 1000 G
                  79 GS 850 G
                  81 GS 850 L
                  83 GS 550 ES, 85 GS 550 ES
                  80 GS 550 L
                  86 450 Rebel, 70CL 70, Yamaha TTR125
                  2002 Honda 919
                  2004 Ural Gear up

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                    #24
                    Dang it David, I keep trying to forget about those $#&%?/)*+#. "80" model Suzuki pet cocks, please quit reminding me about them...
                    1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

                    Comment

                      #25
                      Originally posted by Rob S. View Post
                      No reserve? Don't run out of gas!
                      No Reserve! I'm only going out for coffee and ice cream... isn't that what the "L" model was for? LOL
                      - David
                      80 GS850GL, 82 GS1100G
                      Arlington, TX
                      ​https://visitedstatesmap.com/image/ARMNMTNDSDTXsm.jpg

                      Comment

                        #26
                        Originally posted by rphillips View Post
                        Dang it David, I keep trying to forget about those $#&%?/)*+#. "80" model Suzuki pet cocks, please quit reminding me about them...
                        I'm stuck with it for my tank. Nothing else fits! Terrible design though.
                        - David
                        80 GS850GL, 82 GS1100G
                        Arlington, TX
                        ​https://visitedstatesmap.com/image/ARMNMTNDSDTXsm.jpg

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