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Trying to figure out what this piece on my carburator does?

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    #1

    Trying to figure out what this piece on my carburator does?

    I have a 1978 Suzuki gs750 that's running but runs rough. I started taking apart the carburator and while removing the bowls on the bottom notice there was something damaged. I didn't take a picture but hopefully I can just explain what it is. It a metal stem that is long and Comes from the carburator. Well it was completely broken off. Does anybody know
    what this does?
    Tags: None
    #2
    Going to need a pic or see if you can find something that looks similiar on the carb fiche.
    404 - File or directory not found.
    http://www.ronayersmotorcycles.com/fiche_section_detail.asp?section=94640&category=Motorcycles&make=SUZUKI&year=1977&fveh=2133
    2@ \'78 GS1000

    Comment

      #3
      Choke jet
      Pulls fuel from your bowls when you choke the bike.
      You can replace it.
      1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
      1985 GS1150ES stock with 85 Red E bodywork.

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        #4
        image.jpgTo the left in this picture is the long brass stem coming from the carburators to the Bowls. So if this was broken it wouldn't matter unless I was using the choke??

        Comment

          #5
          I think he's talking about either the black/white arrow or the red/white arrow:
          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
            What Bill said...enrichment circuit pick up tube. And to the OP...youll need to be sure that hole in the bowl that the tube fits into in the bowl is cleaned out as well. Youll see a hole at the bottom of that hole inside the bowl itself. That hole feeds fuel into the hole and feeds that tube. there is a small hole at the bottom that often gets choked off with crud. Poke the hole out and use carb spray and air to ensure it is open.
            MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
            1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

            NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


            I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

            Comment

              #7
              It's the white and red arrow in the picture. So the enrichment pick up tube can be replaced? Any of you guys have
              issues with your petcock valve? I have to leave it on prime for the motor to actually keep running or it stalls out. I took it apart and clean it but nothing changed. My
              vaccum lines are hooked up correctly.

              Comment

                #8
                Yes the petcocks go bad, DO NOT leave it on prime though when not running. Free flowing fuel can seep into the crankcase and dilute the oil. If you dont catch it you run the risk of tearing up cam and crank bearings. Sounds like new petcock time. Yes they can be replaced with ordinary brass tubing of the same diameter. just drill a few small holes at the top like the originals or get a donor from a carb with a broken float hinge post and swap them out.

                And a little tip for cleaning the pick up tubes hole. Little heating with a torch or heat gun and youll see black crud come bubbling out the hole on the inner side of the bowl.. Heat it and dunk it in water a few times. Then poke out the hole and rinse well with carb spray.
                MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                Comment

                  #9
                  The brass tube thats in the bowl itself is the overflow tube. If a float sticks open or the float hts are wrong this will pour excess fuel out the bottom
                  MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                  1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                  NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                  I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                  Comment

                    #10
                    Thanks guys for the help. You saved me lots on buying another carb

                    Comment

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