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DT125R FORUM

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Bogging

Scheduled Pinned Locked Moved Engine
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  • VcelickaV Offline
    VcelickaV Offline
    Vcelicka
    wrote on last edited by Vcelicka
    #1

    Hi guys i recently bought the first year of giannelli exhaust ( didnt bought the silencer , already have athena) .

    And now when its warm and everything i want to nicely rev it and it almost stalls so i took it for a ride and when i WOT it kicked like crazy and went crazy fast but when i close the throttle, bike didnt go back to rpm and slowly stalled so i wanted to bumb started it but she didnt let me .

    So i had to wait and then it would go but i want allowed to close the throttle.

    So back home i switched the exhaust and it ran normal again but it was hella slow....

    What should i do ?
    ( i run 30mm mikuni and have a little bigger hole in airbox)

    S 1 Reply Last reply
    0
    • VcelickaV Vcelicka

      Hi guys i recently bought the first year of giannelli exhaust ( didnt bought the silencer , already have athena) .

      And now when its warm and everything i want to nicely rev it and it almost stalls so i took it for a ride and when i WOT it kicked like crazy and went crazy fast but when i close the throttle, bike didnt go back to rpm and slowly stalled so i wanted to bumb started it but she didnt let me .

      So i had to wait and then it would go but i want allowed to close the throttle.

      So back home i switched the exhaust and it ran normal again but it was hella slow....

      What should i do ?
      ( i run 30mm mikuni and have a little bigger hole in airbox)

      S Offline
      S Offline
      SpookDog
      wrote on last edited by
      #2

      @Vcelicka

      New exhaust gasket? Seated properly?…

      VcelickaV 1 Reply Last reply
      0
      • S SpookDog

        @Vcelicka

        New exhaust gasket? Seated properly?…

        VcelickaV Offline
        VcelickaV Offline
        Vcelicka
        wrote on last edited by
        #3

        @SpookDog
        Yes i check that , and looks fine no oil under it clean.

        S 2 Replies Last reply
        0
        • VcelickaV Vcelicka

          @SpookDog
          Yes i check that , and looks fine no oil under it clean.

          S Offline
          S Offline
          SpookDog
          wrote on last edited by SpookDog
          #4

          @Vcelicka

          Think of anything else that you may of changed or disturbed during the exhaust change. Even left a rag on top of the air box!…

          Failing that I’d start by checking and cleaning the carb, plug and cap…

          It’s a weird one!…

          VcelickaV 1 Reply Last reply
          0
          • CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #5

            @Vcelicka Is this pipe used?
            https://www.youtube.com/watch?v=v7u27ITL8vM

            I have had problems before where gunk has got lodged in the exhaust pipe causing the bike to just not run properly. That video gives a good idea of how they cleaned theirs out.

            Always Originate, Never Pirate!

            VcelickaV 1 Reply Last reply
            0
            • S SpookDog

              @Vcelicka

              Think of anything else that you may of changed or disturbed during the exhaust change. Even left a rag on top of the air box!…

              Failing that I’d start by checking and cleaning the carb, plug and cap…

              It’s a weird one!…

              VcelickaV Offline
              VcelickaV Offline
              Vcelicka
              wrote on last edited by
              #6

              @SpookDog

              I already cleaned everything

              S 1 Reply Last reply
              0
              • CalumC Calum

                @Vcelicka Is this pipe used?
                https://www.youtube.com/watch?v=v7u27ITL8vM

                I have had problems before where gunk has got lodged in the exhaust pipe causing the bike to just not run properly. That video gives a good idea of how they cleaned theirs out.

                VcelickaV Offline
                VcelickaV Offline
                Vcelicka
                wrote on last edited by
                #7

                @Calum
                Its similar
                I will try to decarbonize it . Is there anything dangerous about that process?

                CalumC 1 Reply Last reply
                0
                • VcelickaV Vcelicka

                  @Calum
                  Its similar
                  I will try to decarbonize it . Is there anything dangerous about that process?

                  CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #8

                  @Vcelicka Probably! But the effect it had on a previous bike was dramatic!

                  Always Originate, Never Pirate!

                  1 Reply Last reply
                  0
                  • VcelickaV Vcelicka

                    @SpookDog

                    I already cleaned everything

                    S Offline
                    S Offline
                    SpookDog
                    wrote on last edited by SpookDog
                    #9

                    @Vcelicka

                    It was a second hand pipe then? Could be clogged up…
                    Don’t explain why your old pipe that was fine before should be running wrong…

                    I’d look beyond the pipe…

                    PS Is the Athena tailpipe clear? It’s the only thing that’s common to both pipes…

                    1 Reply Last reply
                    0
                    • VcelickaV Vcelicka

                      @SpookDog
                      Yes i check that , and looks fine no oil under it clean.

                      S Offline
                      S Offline
                      SpookDog
                      wrote on last edited by
                      #10

                      Also double check the manifold gasket seal. No oil isn’t proof of a leak on such short rides. Put your hand over the tailpipe, it should be ‘hells’ quiet…

                      Also, be careful when bumb starting a bike. It can be PITA! 😜 …

                      VcelickaV 1 Reply Last reply
                      0
                      • S SpookDog

                        Also double check the manifold gasket seal. No oil isn’t proof of a leak on such short rides. Put your hand over the tailpipe, it should be ‘hells’ quiet…

                        Also, be careful when bumb starting a bike. It can be PITA! 😜 …

                        VcelickaV Offline
                        VcelickaV Offline
                        Vcelicka
                        wrote on last edited by
                        #11

                        @SpookDog
                        PITA ?😂 little update i cleaned the pipe , there was a little carbon build up but not much . Now when i rode it up a little hil (10% incline) it did missed put when i WOT and sputter.
                        And the powervalve adjustment leaks oil out of nowhere…

                        Where is the problem now?

                        S 1 Reply Last reply
                        0
                        • VcelickaV Vcelicka

                          @SpookDog
                          PITA ?😂 little update i cleaned the pipe , there was a little carbon build up but not much . Now when i rode it up a little hil (10% incline) it did missed put when i WOT and sputter.
                          And the powervalve adjustment leaks oil out of nowhere…

                          Where is the problem now?

                          S Offline
                          S Offline
                          SpookDog
                          wrote on last edited by SpookDog
                          #12

                          @Vcelicka

                          PITA= Pain In The Ass…

                          If you have black 2T oil coming out of the power valve servo housing, the orange oil seal probably needs replacing…
                          Unless you have accidentally mucked something up when you were changing over the exhausts, you’re going to have to go back to square one. IE re clean the carb, clean the plug and check the cap and HT lead. Everything that can affect running…
                          Double check the exhaust gasket, try refitting it with some RTV silicon sealant…
                          PS it can sometimes get oily when the bike is running rich or misfiring a lot, in my experience. It’s basically unburnt 2T oil…

                          It’s missing for a reason, you just have to find the culprit…

                          VcelickaV 1 Reply Last reply
                          0
                          • S SpookDog

                            @Vcelicka

                            PITA= Pain In The Ass…

                            If you have black 2T oil coming out of the power valve servo housing, the orange oil seal probably needs replacing…
                            Unless you have accidentally mucked something up when you were changing over the exhausts, you’re going to have to go back to square one. IE re clean the carb, clean the plug and check the cap and HT lead. Everything that can affect running…
                            Double check the exhaust gasket, try refitting it with some RTV silicon sealant…
                            PS it can sometimes get oily when the bike is running rich or misfiring a lot, in my experience. It’s basically unburnt 2T oil…

                            It’s missing for a reason, you just have to find the culprit…

                            VcelickaV Offline
                            VcelickaV Offline
                            Vcelicka
                            wrote on last edited by
                            #13

                            @SpookDog

                            Ok i will try everything ……… I will find it 😂🤣

                            1 Reply Last reply
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