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DT125R FORUM

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  3. Why does it do this?

Why does it do this?

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  • V Offline
    V Offline
    valtteri
    wrote on last edited by
    #1

    I just got my dt running and when dricing it just stops at very low rpms it has a giannelli pipe 28 mikuni with 260(main) 20(pilot) jets and ypvs servo is in use and a rebored cylinder to like 57.5mm. And the bike is restricted also the gren nd black wire is touching ground. So what could be the problem heres a video
    https://youtu.be/yx0jJ8STNx4

    V markus.wM 2 Replies Last reply
    0
    • V valtteri

      I just got my dt running and when dricing it just stops at very low rpms it has a giannelli pipe 28 mikuni with 260(main) 20(pilot) jets and ypvs servo is in use and a rebored cylinder to like 57.5mm. And the bike is restricted also the gren nd black wire is touching ground. So what could be the problem heres a video
      https://youtu.be/yx0jJ8STNx4

      V Offline
      V Offline
      valtteri
      wrote on last edited by
      #2

      Im gonna look if theres any air leaks and also gonna check if the ypvs works

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      • ChallengerC Offline
        ChallengerC Offline
        Challenger
        wrote on last edited by
        #3

        If it sounds like this
        https://www.youtube.com/watch?v=90BbYwkOnFs
        then its an electronic cut-out rpm

        V 1 Reply Last reply
        1
        • ChallengerC Challenger

          If it sounds like this
          https://www.youtube.com/watch?v=90BbYwkOnFs
          then its an electronic cut-out rpm

          V Offline
          V Offline
          valtteri
          wrote on last edited by
          #4

          @Challenger yes well have you figured it out how to get it away?

          ChallengerC 1 Reply Last reply
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          • V valtteri

            @Challenger yes well have you figured it out how to get it away?

            ChallengerC Offline
            ChallengerC Offline
            Challenger
            wrote on last edited by
            #5

            @valtteri alt text

            I installed this wire, its somewhere in the middle of the bike(under the seat) and the cut-out was gone. I dont know if it will help you, but I had 3RM-00 CDI and it was the older style of a DT but this little mod fixed it. You might have a different wiring loom since you have a newer style of a DT, but Im just posting here what helped me with getting rid of this problem. Anyway there is a solution to that problem.

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            • V valtteri

              I just got my dt running and when dricing it just stops at very low rpms it has a giannelli pipe 28 mikuni with 260(main) 20(pilot) jets and ypvs servo is in use and a rebored cylinder to like 57.5mm. And the bike is restricted also the gren nd black wire is touching ground. So what could be the problem heres a video
              https://youtu.be/yx0jJ8STNx4

              markus.wM Offline
              markus.wM Offline
              markus.w
              wrote on last edited by
              #6

              @valtteri sounds very similar to problem I had with my Old 89 dtr and that was the spark plug breaking down. Revved fine at standstill it only happened under load iirc. I may be wrong but it's quite a simple test to swap the plug. Best of luck to you.

              V 1 Reply Last reply
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              • markus.wM markus.w

                @valtteri sounds very similar to problem I had with my Old 89 dtr and that was the spark plug breaking down. Revved fine at standstill it only happened under load iirc. I may be wrong but it's quite a simple test to swap the plug. Best of luck to you.

                V Offline
                V Offline
                valtteri
                wrote on last edited by
                #7

                @markus-w thanks

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