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DT125R FORUM

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  3. Lingering revs and no running without choke

Lingering revs and no running without choke

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  • CalumC Calum

    SO I always found that the bike never started with the stock carb without choke. So choke from cold is normal.

    Once warm however it should be fine.

    I would make sure the throttle is not ajar.

    declanD Offline
    declanD Offline
    declan
    wrote on last edited by
    #4

    @Calum I did install a throttle that's not meant for it and had to make it work so I will double check it just not sure it will run fine without choke as long as I hold the throttle on slightly

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    • CalumC Calum

      SO I always found that the bike never started with the stock carb without choke. So choke from cold is normal.

      Once warm however it should be fine.

      I would make sure the throttle is not ajar.

      declanD Offline
      declanD Offline
      declan
      wrote on last edited by
      #5

      @Calum do you think the a/f mix is off and if so lean or rich?

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      • J Offline
        J Offline
        Jens Eskildsen
        wrote on last edited by
        #6

        Its lean If it wont idle without choke when warm. Is the airscrew around 1,5 turns out?

        You need to clean the carb, pay special attention to the idle jet, and the internal tube between that and the airscrew (remove the airscrew and make sure the tube is clear by spraying fluid (carb cleaner, wd40, brake cleaner or compressed air ect) through it

        declanD 1 Reply Last reply
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        • J Jens Eskildsen

          Its lean If it wont idle without choke when warm. Is the airscrew around 1,5 turns out?

          You need to clean the carb, pay special attention to the idle jet, and the internal tube between that and the airscrew (remove the airscrew and make sure the tube is clear by spraying fluid (carb cleaner, wd40, brake cleaner or compressed air ect) through it

          declanD Offline
          declanD Offline
          declan
          wrote on last edited by
          #7

          @Jens-Eskildsen do you know of any carbs which are a direct replacement for the dt? And not got to the screw yet will do tmoz thank you for helping me out btw.

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          • MiniaM Offline
            MiniaM Offline
            Minia
            wrote on last edited by
            #8

            A thorough clean of the carb might be the trick. Certainly did for me numerous times.

            Yamaha DT125R Blue 2002, XT 125 1982, Yamaha WR250Z 1992, BMW GS650F 1994, Benelli BN302 2015

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            • J Offline
              J Offline
              Jens Eskildsen
              wrote on last edited by
              #9

              The stock carb seems to work fine for the bike, so no I havent reserced if another one is bolt on, but wouldn't think so.

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              • CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #10

                I run VHSA, inlet needed some modifying mind you. Works a treat.

                Always Originate, Never Pirate!

                declanD 1 Reply Last reply
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                • CalumC Calum

                  I run VHSA, inlet needed some modifying mind you. Works a treat.

                  declanD Offline
                  declanD Offline
                  declan
                  wrote on last edited by
                  #11

                  @Calum what just making the hole bigger to fit the carb?

                  CalumC 1 Reply Last reply
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                  • declanD declan

                    @Calum what just making the hole bigger to fit the carb?

                    CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on last edited by
                    #12

                    @declan Yeah tht did the trick.

                    You can buy a 28 to 32 converter also.

                    Always Originate, Never Pirate!

                    declanD 1 Reply Last reply
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                    • CalumC Calum

                      @declan Yeah tht did the trick.

                      You can buy a 28 to 32 converter also.

                      declanD Offline
                      declanD Offline
                      declan
                      wrote on last edited by
                      #13

                      @Calum thanks! What revs do the the dts go to on full choke

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