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DT125R FORUM

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  4. Can not get this bike to idle!

Can not get this bike to idle!

Scheduled Pinned Locked Moved Engine
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  • CalumC Offline
    CalumC Offline
    Calum
    wrote on last edited by
    #2

    Well it shouldn't screech, so sort that out.

    The bike should warm up before turning the choke off. I.E. can you start it up and leave it running with the choke. after 60 seconds does the idle drop off and stall.

    My bike never started without choke when the engine was cold, no matter what time of year.

    It's just the warm up procedure.

    Always Originate, Never Pirate!

    ricky0115R 1 Reply Last reply
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    • CalumC Calum

      Well it shouldn't screech, so sort that out.

      The bike should warm up before turning the choke off. I.E. can you start it up and leave it running with the choke. after 60 seconds does the idle drop off and stall.

      My bike never started without choke when the engine was cold, no matter what time of year.

      It's just the warm up procedure.

      ricky0115R Offline
      ricky0115R Offline
      ricky0115
      wrote on last edited by
      #3

      @calum had the choke on for more than 60 seconds. Screech was the water pump impeller, seal wasn’t pushed in fully!

      CalumC 1 Reply Last reply
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      • ricky0115R ricky0115

        @calum had the choke on for more than 60 seconds. Screech was the water pump impeller, seal wasn’t pushed in fully!

        CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #4

        @ricky0115 Sound.

        So you've sorted the screeching out. It not just starts and idles.

        What happens if you leave the choke on and leave the bike alone.

        Does it just tick over indefinitely.

        Can you ride the bike, does it bog out. It might just need the air mixture screw adjusting bud,

        Always Originate, Never Pirate!

        ricky0115R 1 Reply Last reply
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        • CalumC Calum

          @ricky0115 Sound.

          So you've sorted the screeching out. It not just starts and idles.

          What happens if you leave the choke on and leave the bike alone.

          Does it just tick over indefinitely.

          Can you ride the bike, does it bog out. It might just need the air mixture screw adjusting bud,

          ricky0115R Offline
          ricky0115R Offline
          ricky0115
          wrote on last edited by
          #5

          @calum it will idle fine and it sounds about right rpm, I tried adjusting the screws but they’re so sensitive to movement it’s unreal. I’m going to try the idle screws again tomorrow when I have someone to keep it alive whilst I alter them, I will keep you updated. Cheers Calum

          CalumC 1 Reply Last reply
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          • ricky0115R ricky0115

            @calum it will idle fine and it sounds about right rpm, I tried adjusting the screws but they’re so sensitive to movement it’s unreal. I’m going to try the idle screws again tomorrow when I have someone to keep it alive whilst I alter them, I will keep you updated. Cheers Calum

            CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #6

            @ricky0115 Sounds to me like an air leak, they shouldn't be that sensitive.

            If you dab the throttle does the RPM's go crazy.

            You have routed the cable correctly haven't you. It's not caught on anything?

            Always Originate, Never Pirate!

            ricky0115R 1 Reply Last reply
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            • CalumC Calum

              @ricky0115 Sounds to me like an air leak, they shouldn't be that sensitive.

              If you dab the throttle does the RPM's go crazy.

              You have routed the cable correctly haven't you. It's not caught on anything?

              ricky0115R Offline
              ricky0115R Offline
              ricky0115
              wrote on last edited by
              #7

              @calum no the rpms are steady not jumpy or erratic when applying throttle it responds as expected, the top screw I have 1 1/4 turns out and the bottom one is 2 1/2 turns

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              • Irongamer727I Offline
                Irongamer727I Offline
                Irongamer727
                wrote on last edited by
                #8

                Does it still die once the engine is hot?
                My bike always needs the choke for about 10 sek or so and then I can turn it off. Still needs another 30 sek before I can drive off.

                ricky0115R 1 Reply Last reply
                1
                • Irongamer727I Irongamer727

                  Does it still die once the engine is hot?
                  My bike always needs the choke for about 10 sek or so and then I can turn it off. Still needs another 30 sek before I can drive off.

                  ricky0115R Offline
                  ricky0115R Offline
                  ricky0115
                  wrote on last edited by
                  #9

                  @irongamer727 I had the choke on about 3 minutes, I darent leave it on too long lol

                  1 Reply Last reply
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                  • J Offline
                    J Offline
                    Jens Eskildsen
                    wrote on last edited by
                    #10

                    I'd check the pilotjet for debris

                    ricky0115R 1 Reply Last reply
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                    • J Jens Eskildsen

                      I'd check the pilotjet for debris

                      ricky0115R Offline
                      ricky0115R Offline
                      ricky0115
                      wrote on last edited by
                      #11

                      @jens-eskildsen it’s been cleaned and new main an new pilot.

                      1 Reply Last reply
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                      • ricky0115R Offline
                        ricky0115R Offline
                        ricky0115
                        wrote on last edited by
                        #12

                        0_1507907897729_4FE79F26-5624-41F6-A3A3-F16017A5DA0F.jpeg

                        This is my water pump impeller with the pump seal welded to it, I bought the Athena seal from PJME and I didn’t realise it didn’t fit correctly till I fired up my bike and this is what was screeching so I would advise if replacing the water pump seal use OEM!

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