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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 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

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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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