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Carb linkage issue?

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  • Carb linkage issue?

    So hey, I haven't been on here much lately and I do appreciate all of the good advice from all of you. I have another issue to bring up, I have a throttle issue, the bike "bogs" upon opening the throttle, and then after holding it open for a few seconds seems to clear up. I took the tank off, looked at the throttle linkage on the carb( while opening the throttle) and noticed the linkage does not open carbs 1 and 2 when it opens 3 and 4. They do open up after twisting the throttle a bit more but not nearly at the same time. I noticed the bit of linkage that actuates carbs 1 and 2 seems to be missing something, a spring maybe? I also have noticed the plugs for cylinders 1 and 2 are carbon fouling while the 3 and 4 seem to look good. Please help.

  • #2
    Sounds like your missing a linkage spring or it is installed wrong.
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    • #3
      There is definitely something missing, I wish I were better with terminology and the art of situational explanation, but I've looked at so many carb diagrams and it looks like the bottom piece is where the idle adjustment comes in. i wish I could find a good diagram, would this cause the fouling of the two plugs, would this cause them to not be receiving the proper air needed for appropriate fuel burn?

      And this is going to sound newbish as hell, especially the terminology, I've noticed there are slides on the air box side of the carbs that kinda bounce around a bit in carbs 3&4 during idle whereas the slides in carbs 1&2 don't . Is this an issue? Is it related to the issue I have described? Again, I apologize for the lack of appropriate terminology.
      Last edited by CLYNT BEASTWOOD; 04-09-2016, 11:33 PM. Reason: Automerged Doublepost

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      • #4
        Yeah, slide flutter on two carbs tells me you need a sync, 3&4 are open too far at idle.
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        • #5
          Ok. Thanks junker

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          • #6
            [/QUOTE]
            This is the linkage that is wonky


            Is this the pieces I would need, it's everything that is below this screw and spring that is missing, there in another similar piece below this piece of linkage that I believe needs a spring to make contact. God I'm horrible with explanations
            Last edited by CLYNT BEASTWOOD; 04-10-2016, 06:36 PM. Reason: Automerged Doublepost

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            • #7
              You need item #25 chief, that's it. I have no idea why you have every part of the A/F screw assembly circled, but I fairly confident the A/F screw has zero to do with the butterfly valves opening at the same time. Every time I think legalizing pot is the right thing too do, I read something like this and need to rethink my stance.

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              • #8
                Yeah, after I looked at it again I realized I was looking at the wrong parts. The spring is all I need? How is it held in place between the two pieces of the linkage? Is the screw coming from the top long enough to go through and hold it in place between the linkage parts?

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                • #9
                  No, nothing has to hold it in place. It's a spring dude, you are aware how those work right?

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                  • #10
                    Oh, and thank you for the reply. Do you have any pics that I can reference to see how it all works and comes together?

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                    • #11
                      this is highly complex spring physics

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                      • #12
                        how does the spring not fall out between the 2 pieces then?

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                        • #13
                          Cause it's a spring and it's compressed between two things. This might blow your mind, but there's two more that work exactly the same way. One between #4 & #3 and another between #2 & #1.

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                          • #14
                            Maybe I am missing more than one piece

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                            • #15
                              Like logical thought?

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