Announcement

Collapse
No announcement yet.

carb woes

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

    carb woes

    I tried to work through this myself but am getting no where.
    I bought a set of carbs from a reputable carb guy. He said he would jet them for the K&N pods I have. I Put them on the bike and it runs horrible.
    I set the idle mixture screws to 4 turns. Which got me wondering, is a turn 360 degrees, or 180 degrees?
    It will start and idle but if I open up the throttle a bit it dies after the engines starts sounding heavily muffled.
    I noticed though that if I choke it the RPM go WAY up, no tach at the moment, but I guess easily 6-8K. and the engine sounds great.
    Plugs are all new and set to .65MM.
    There is a bit of popping from cylinder 3 or 4.
    Inititally cylinder 3 did not run, but it has since started working
    Does all this add up to a common denominator?
    What do I look at now?

    Thanks!
    Last edited by morpheus666; 09-20-2009, 02:16 PM.
    :::::::::::::::::::::::::::::::::::::::::::::
    Past:73' CL360, 74' CB450, 80' GS550,
    83' CB550SC, 78' CX500, 81' GL1100,
    85' GL1200LTD, 85' Honda Rebel
    84' GS1150, 92' GSX 1100G
    Current:
    80' GS1100E,,
    81 Yamaha XS1100,
    01' Bandit 1200
    sigpic

    #2
    I'm pretty sure a turn is 360 degrees

    Comment


      #3
      Did you put the airbox back on?
      http://img.photobucket.com/albums/v5...tatesMap-1.jpg

      Life is too short to ride an L.

      Comment


        #4
        Which bike are you talking about and what is the ID on the carb?

        Comment


          #5
          Sorry I did not list all the requisite info,,, 80' gs1100E
          The carbs look identical to the ones that I had on the bike before, one side is imprinted with MIC Mikuni and the other side shows Made in Japan.
          I have K&N's so I did not put the airbox back on.
          :::::::::::::::::::::::::::::::::::::::::::::
          Past:73' CL360, 74' CB450, 80' GS550,
          83' CB550SC, 78' CX500, 81' GL1100,
          85' GL1200LTD, 85' Honda Rebel
          84' GS1150, 92' GSX 1100G
          Current:
          80' GS1100E,,
          81 Yamaha XS1100,
          01' Bandit 1200
          sigpic

          Comment


            #6
            If you have the plugs gapped at .065 of an INCH, there is a LOT of your problem! Set the plug gaps to .028 & start over with your carb tuning! It's a wonder it would run at all with that much gap!!! Ray.

            Comment


              #7
              sorry, decimal in the wrong spot, damn dyslexia... 0.65mm My clymer manual says 0.6-0.7 so I set it in the middle.
              Last edited by morpheus666; 09-19-2009, 07:50 PM.
              :::::::::::::::::::::::::::::::::::::::::::::
              Past:73' CL360, 74' CB450, 80' GS550,
              83' CB550SC, 78' CX500, 81' GL1100,
              85' GL1200LTD, 85' Honda Rebel
              84' GS1150, 92' GSX 1100G
              Current:
              80' GS1100E,,
              81 Yamaha XS1100,
              01' Bandit 1200
              sigpic

              Comment


                #8
                If your compression is good, valves are adjusted, and the motor is sound the jetting is off.
                What type of pipe are you running with the K&Ns?
                Did the guy install a Dynojet or Factorypro kit?
                I set these carbs up all the time and I can tell you where to start if you had good needle jets and more info.
                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.

                Comment


                  #9
                  I think the compression is good, but I should get a guage and check.
                  I haven't done the valves,, I should probably do that.
                  I have the stock exhaust with new gaskets.
                  I don't know what he installed, I have sent him an email to find out.

                  Thanks for the response.
                  ~M
                  Last edited by morpheus666; 09-20-2009, 02:06 PM.
                  :::::::::::::::::::::::::::::::::::::::::::::
                  Past:73' CL360, 74' CB450, 80' GS550,
                  83' CB550SC, 78' CX500, 81' GL1100,
                  85' GL1200LTD, 85' Honda Rebel
                  84' GS1150, 92' GSX 1100G
                  Current:
                  80' GS1100E,,
                  81 Yamaha XS1100,
                  01' Bandit 1200
                  sigpic

                  Comment

                  Working...
                  X