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    Dt125r 2001 keeps dieing

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    • Randall
      Randall last edited by

      I have a dt125r 2001 y reg, recebt top end rebuild I have just ran it in and was working lovely but for the past two mornings on the way to work it has decided after a 5 or 10 minuet run it wants to cut out and die. Leave it for 5minuets or so snd it will start again but start to run like a bag of shit and not want to go and die again ... any insight would help I al not currently with the bike but would like to know where to look .

      declan 1 Reply Last reply Reply Quote 0
      • declan
        declan @Randall last edited by

        @jamesrandall93 maybe a blockage in the fuel system so the carb is struggling to fill?

        Randall 1 Reply Last reply Reply Quote 0
        • Randall
          Randall @declan last edited by

          @declan so new fuel hoses and re set the carb?

          1 Reply Last reply Reply Quote 0
          • Calum
            Calum last edited by

            Who performed the rebuild?

            Definitey used the right piston? Put in the right way. Piston Ring end gap measured?

            Gasket on the right way? You losing coolant? Did you use a genuine/Athena head gasket. Did you use a forged piston (had to jet my DT like 4 ratings with a Wossner.

            Is it the right spark plug? Is there a kink in the fuel hose? Is the float operating correctly.

            No air leak. Carb boot and intake manifold on correctly, no cracks or leaks.

            No blockages in the inlet tract. Air box clean and free of debris. Not overly smoking? No black smoke? Head wasn't damaged when it went for a rebuild/

            Randall 1 Reply Last reply Reply Quote 0
            • Randall
              Randall @Calum last edited by

              @Calum moterbike shop near me done it using all original parts cost me £450 ran it in correctly and all of a sudden due to poor weather conditions it keeps cutting out in he mornings in the afternoone or evening it didnt do it

              Calum 1 Reply Last reply Reply Quote 0
              • Calum
                Calum @Randall last edited by

                @jamesrandall93 wow that's expensive. Something doesn't sound right. By poor conditions do you mean rain? Could be water getting into the inlet tract or into something electrical.

                declan 1 Reply Last reply Reply Quote 0
                • declan
                  declan @Calum last edited by

                  @Calum my dt used to lose its shit and stop working In the rain pretty sure it was water finding it’s self into the flywheel never rode it since fix so don’t know for sure

                  Calum 1 Reply Last reply Reply Quote 0
                  • Calum
                    Calum @declan last edited by

                    @declan Yeah that'll wanna be water tight. But it should still work. Since it's using magnetic flux. So dunno.

                    Randall 1 Reply Last reply Reply Quote 0
                    • Randall
                      Randall @Calum last edited by

                      @Calum how would i stop water though its bloody winter I dont get why it runs like a bga of shit one minuet and the next fine.. leaving me scratching my head tbh.

                      Calum 1 Reply Last reply Reply Quote 0
                      • Calum
                        Calum @Randall last edited by

                        @jamesrandall93 Well that's what I'm saying. There is something wrong with your bike. I used to have no issues, summer winter, water whatever.

                        declan 1 Reply Last reply Reply Quote 0
                        • declan
                          declan @Calum last edited by

                          @Calum I think I tested in with a water hose and it was fine just no real world test wet roads were fine but if I even slightly touched grass it would be game over it would be limited to around 4K would need to rest for 10 minutes and it would be good as new

                          Randall 1 Reply Last reply Reply Quote 0
                          • Randall
                            Randall @declan last edited by

                            @declan going to start with the basics.. carb clean air box and filter new plug clean all the loom cling film and vasaline them to keep the moister off and see if their is anything I seem to find

                            NINJA 1 Reply Last reply Reply Quote 1
                            • NINJA
                              NINJA @Randall last edited by

                              @jamesrandall93 Sounds like a good plan, I would also check all your hoses and pipes for any splits. If there is a leak or a split hose that would most likely be the culprit???

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