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DT125R FORUM

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  4. Dt125 mikuni carb

Dt125 mikuni carb

Scheduled Pinned Locked Moved Carburetor
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  • K kevin

    @irongamer727 I’m a firm believer in leaving things the way they are and not thinking I’m better than the designers.
    To answer your question 35 is very big for your carb.
    Does Athena give any tips on resetting.
    You say it’s hard to start, have you checked the fuel feed pipe when the cold start lever is on as it’s very narrow and often gets blocked.

    Irongamer727I Offline
    Irongamer727I Offline
    Irongamer727
    wrote on last edited by
    #23

    @kevin nope. Athena don't give any recommendations at all. Do you mean the fuel hose itself? That's brand new. The choke works, could there be some debris in the mechanism you think?

    K 1 Reply Last reply
    0
    • Irongamer727I Irongamer727

      @kevin nope. Athena don't give any recommendations at all. Do you mean the fuel hose itself? That's brand new. The choke works, could there be some debris in the mechanism you think?

      K Offline
      K Offline
      kevin
      wrote on last edited by
      #24

      @irongamer727 thin brass pipe near to the hole the pilot jet drops in is the fuel pipe whilst on the choke cycle, very thin wire needs poking down to the bottom and then through the cross holes.

      1 Reply Last reply
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      • Irongamer727I Offline
        Irongamer727I Offline
        Irongamer727
        wrote on last edited by
        #25

        Alright so as I'm getting progressively better at them wheelies and can ride longer, I've noticed stuff. The carb wants to piss out the transparent liquid gold (petrol).

        Is tilting the carb the only way to go? Or could a float adjustment do the trick?

        CalumC 1 Reply Last reply
        0
        • Irongamer727I Irongamer727

          Alright so as I'm getting progressively better at them wheelies and can ride longer, I've noticed stuff. The carb wants to piss out the transparent liquid gold (petrol).

          Is tilting the carb the only way to go? Or could a float adjustment do the trick?

          CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #26

          @irongamer727 Sounds like the flat is causing you issues.

          Always Originate, Never Pirate!

          Irongamer727I 1 Reply Last reply
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          • CalumC Calum

            @irongamer727 Sounds like the flat is causing you issues.

            Irongamer727I Offline
            Irongamer727I Offline
            Irongamer727
            wrote on last edited by
            #27

            @calum the flat?

            CalumC 1 Reply Last reply
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            • Irongamer727I Irongamer727

              @calum the flat?

              CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #28

              @irongamer727 Float sorry.

              Always Originate, Never Pirate!

              Irongamer727I 1 Reply Last reply
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              • CalumC Calum

                @irongamer727 Float sorry.

                Irongamer727I Offline
                Irongamer727I Offline
                Irongamer727
                wrote on last edited by
                #29

                @calum would I want to raise or lower it?

                CalumC 1 Reply Last reply
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                • Irongamer727I Irongamer727

                  @calum would I want to raise or lower it?

                  CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #30

                  @irongamer727 Just make sure it's shutting off the fuel bud

                  Always Originate, Never Pirate!

                  Irongamer727I 1 Reply Last reply
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                  • CalumC Calum

                    @irongamer727 Just make sure it's shutting off the fuel bud

                    Irongamer727I Offline
                    Irongamer727I Offline
                    Irongamer727
                    wrote on last edited by Irongamer727
                    #31

                    @calum won't that affect my crusing, regular riding?

                    I mean the carb will tilt almost 90Β° on a real wheelie.

                    I've spoken to some guys really good at that rear wheel (they ride a dt) and some of them just plug the overflow. But I mean it's clearly leaking for a reason. Can't understand how plugging the owerflow works.

                    1 Reply Last reply
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                    • Glynn123G Offline
                      Glynn123G Offline
                      Glynn123
                      wrote on last edited by
                      #32

                      As far as I'm aware if you plug the overflow it will still dump the fuel, but it will dump it out the rear intake of the carb into the airbox, which will then get sucked into the engine. Never had or seen any problems with standard Dt carb during wheelies, and I know people who regularly scrape and coast.

                      Irongamer727I 1 Reply Last reply
                      0
                      • Glynn123G Glynn123

                        As far as I'm aware if you plug the overflow it will still dump the fuel, but it will dump it out the rear intake of the carb into the airbox, which will then get sucked into the engine. Never had or seen any problems with standard Dt carb during wheelies, and I know people who regularly scrape and coast.

                        Irongamer727I Offline
                        Irongamer727I Offline
                        Irongamer727
                        wrote on last edited by
                        #33

                        @glynn123 someone's got to be the firstπŸ˜›πŸ”«

                        Glynn123G 1 Reply Last reply
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                        • Irongamer727I Irongamer727

                          @glynn123 someone's got to be the firstπŸ˜›πŸ”«

                          Glynn123G Offline
                          Glynn123G Offline
                          Glynn123
                          wrote on last edited by
                          #34

                          @irongamer727 doesn't seem like you're having much luck with this build mate haha

                          Irongamer727I 1 Reply Last reply
                          0
                          • CalumC Offline
                            CalumC Offline
                            Calum
                            wrote on last edited by
                            #35

                            Plug the overflow lol, that's just masking the problem.

                            It'd be overflowing for a reason and the float is a pretty well balanced item, meaning it shouldn't just purely on gravity. You'd have the be upside down for it to shut, at which point you won't be needing any fuel.

                            I'm not saying adjust it, I'm just saying make sure it does shut off the fuel.

                            Always Originate, Never Pirate!

                            Irongamer727I 1 Reply Last reply
                            0
                            • Glynn123G Glynn123

                              @irongamer727 doesn't seem like you're having much luck with this build mate haha

                              Irongamer727I Offline
                              Irongamer727I Offline
                              Irongamer727
                              wrote on last edited by
                              #36

                              @glynn123 Hehe I mean I'm learning stuff at least, the engine is healthy and all but I guess some things should just not be this hard.πŸ˜›

                              1 Reply Last reply
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                              • CalumC Calum

                                Plug the overflow lol, that's just masking the problem.

                                It'd be overflowing for a reason and the float is a pretty well balanced item, meaning it shouldn't just purely on gravity. You'd have the be upside down for it to shut, at which point you won't be needing any fuel.

                                I'm not saying adjust it, I'm just saying make sure it does shut off the fuel.

                                Irongamer727I Offline
                                Irongamer727I Offline
                                Irongamer727
                                wrote on last edited by
                                #37

                                @calum
                                I should just be able to tilt the carb ~80 Β° and just make sure it closes then. Hopefully a quick fix.

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