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DT125R FORUM

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Need help

Scheduled Pinned Locked Moved Engine
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  • J Jens Eskildsen

    The needle overlaps both bottom and top end, so will fuel height in the carb, verify that its stock.

    CalumC Online
    CalumC Online
    Calum
    wrote on last edited by
    #110

    @jens-eskildsen But once its wide open throttle, the needle is clear of the main jet thus no longer part of the fuel metering process.

    Always Originate, Never Pirate!

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    • J Offline
      J Offline
      Jens Eskildsen
      wrote on last edited by
      #111

      Try yourself mate, if you have a clean reving bike, I can promise you that making big changes to the needle will also affect just of idle, and WOT aswell.

      I had tonnes of issues due to the PO messing with the carb, so I've been all over this quite a few times.

      2-strokes are just very sensitive to jetting, half a notch on the needle on mine will make the bike go from runnning from okay to great.

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      • V Offline
        V Offline
        vtrn_raptor
        wrote on last edited by
        #112

        I did change the needle but was not different I even pinned the pv again just to see if it was the pv causing the lack of power but no it was still the same might just take my carb off and take it to fowlers and get the specialists to rebuild and clean it and see if that helps the problem as would be loads cheaper than buying a new carb

        CalumC 1 Reply Last reply
        0
        • J Offline
          J Offline
          Jens Eskildsen
          wrote on last edited by
          #113

          Yeah, somthing sounds way off.
          Have you checked the fuelheight in the carb? Does the carb overflow and throw gas on the ground ?

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          • J Offline
            J Offline
            Jens Eskildsen
            wrote on last edited by
            #114

            Are you by any chance missing the washer just under the main jet?
            That will cause a very rich condition.

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            • V vtrn_raptor

              I did change the needle but was not different I even pinned the pv again just to see if it was the pv causing the lack of power but no it was still the same might just take my carb off and take it to fowlers and get the specialists to rebuild and clean it and see if that helps the problem as would be loads cheaper than buying a new carb

              CalumC Online
              CalumC Online
              Calum
              wrote on last edited by
              #115

              @vtrn_raptor It's the fueling not the powervalve. That's why it's spluttering.

              Always Originate, Never Pirate!

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              • V Offline
                V Offline
                vtrn_raptor
                wrote on last edited by
                #116

                Nope no fuel on the ground and I don't recall their being a washer under the main jet either

                CalumC 1 Reply Last reply
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                • V vtrn_raptor

                  Nope no fuel on the ground and I don't recall their being a washer under the main jet either

                  CalumC Online
                  CalumC Online
                  Calum
                  wrote on last edited by
                  #117

                  @vtrn_raptor Well there is...

                  alt text

                  Can't say I ever noticed that lol.

                  But I guess I'm not running the stock carb.

                  Always Originate, Never Pirate!

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                  • V Offline
                    V Offline
                    vtrn_raptor
                    wrote on last edited by
                    #118

                    I'm going to do what you said and put carb back stock and work from their

                    1 Reply Last reply
                    2
                    • V Offline
                      V Offline
                      vtrn_raptor
                      wrote on last edited by
                      #119

                      Got someone who knows their way around a dt coming up tonight so fingers crossed 🤞

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                      • J Offline
                        J Offline
                        Jens Eskildsen
                        wrote on last edited by
                        #120

                        Ifyoure missing the washer, that could very well be your main problem, please give it a shot!

                        When youre missing the washer, the carb will suck fuel around the mainjet aswell, making it very very rich.

                        1 Reply Last reply
                        2
                        • V Offline
                          V Offline
                          vtrn_raptor
                          wrote on last edited by
                          #121

                          It was the washer causing the problem the bikes running so nice now

                          declanD terry.tzT 2 Replies Last reply
                          0
                          • V vtrn_raptor

                            It was the washer causing the problem the bikes running so nice now

                            declanD Offline
                            declanD Offline
                            declan
                            wrote on last edited by
                            #122

                            @vtrn_raptor yesssssssss happy for you

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                            • V vtrn_raptor

                              It was the washer causing the problem the bikes running so nice now

                              terry.tzT Offline
                              terry.tzT Offline
                              terry.tz
                              wrote on last edited by
                              #123

                              @vtrn_raptor congrats

                              "Muddy water is best cleared by leaving it alone" Alan Watts

                              1 Reply Last reply
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                              • V Offline
                                V Offline
                                vtrn_raptor
                                wrote on last edited by
                                #124

                                Thanks guys I'll make a build thread soon as I have some time to kill with a few pictures

                                1 Reply Last reply
                                1
                                • MightymanM Offline
                                  MightymanM Offline
                                  Mightyman
                                  wrote on last edited by
                                  #125

                                  I'm very glad you got this sorted without the help of a garage. It would have been wasted money mate! 👍

                                  TDR 125 - 2001

                                  1 Reply Last reply
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                                  • terry.tzT Offline
                                    terry.tzT Offline
                                    terry.tz
                                    wrote on last edited by
                                    #126

                                    best part its one of them things were a garage won't have a clue can't imagine this being that common is it @Jens-Eskildsen

                                    "Muddy water is best cleared by leaving it alone" Alan Watts

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                                    • J Offline
                                      J Offline
                                      Jens Eskildsen
                                      wrote on last edited by
                                      #127

                                      Mine were the same when i bought it. I chased it for weeks, leening out the whole carb before i looked at a parts fiche.
                                      I knew right away what was wrong when i saw the missing washer.

                                      I think its just easy to misplace that one.

                                      terry.tzT 1 Reply Last reply
                                      0
                                      • J Jens Eskildsen

                                        Mine were the same when i bought it. I chased it for weeks, leening out the whole carb before i looked at a parts fiche.
                                        I knew right away what was wrong when i saw the missing washer.

                                        I think its just easy to misplace that one.

                                        terry.tzT Offline
                                        terry.tzT Offline
                                        terry.tz
                                        wrote on last edited by
                                        #128

                                        @jens-eskildsen fare enough

                                        "Muddy water is best cleared by leaving it alone" Alan Watts

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                                        • V Offline
                                          V Offline
                                          vtrn_raptor
                                          wrote on last edited by
                                          #129

                                          Feels good to be riding again lol now I have another question how can I replace a steering lock

                                          terry.tzT 1 Reply Last reply
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