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DT125R FORUM

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  4. Why doesn't my DT125 get a spark?

Why doesn't my DT125 get a spark?

Scheduled Pinned Locked Moved Electrics
electricsstatorcdisparkcdi. power. dt
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  • CalumC Online
    CalumC Online
    Calum
    wrote on last edited by
    #2

    Common issues on these bikes tend to be, side stand switch, neutral switch and kill switch. Make sure those are good.

    Check the ignition barrel connector block, you may have disturbed it when faffing about.

    Easiest way to sort the power valve out is to take the exhaust off and line the valve up with the port directly.

    Always Originate, Never Pirate!

    clawsC 1 Reply Last reply
    0
    • O Offline
      O Offline
      oldman
      wrote on last edited by
      #3

      Change the spark plug anyway. Low cost item and can then be ruled our completely

      clawsC 1 Reply Last reply
      0
      • CalumC Calum

        Common issues on these bikes tend to be, side stand switch, neutral switch and kill switch. Make sure those are good.

        Check the ignition barrel connector block, you may have disturbed it when faffing about.

        Easiest way to sort the power valve out is to take the exhaust off and line the valve up with the port directly.

        clawsC Offline
        clawsC Offline
        claws
        wrote on last edited by
        #4

        @Calum I could open up the kill switch and see if that is working correctly. I doubt that the main switch or the side stand switch have something wrong with them since the rear light turns on when I flip the power on and I don't have a side stand switch actually

        2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
        1999 YZ250 with a 1999 DTR VIN

        1 Reply Last reply
        0
        • O oldman

          Change the spark plug anyway. Low cost item and can then be ruled our completely

          clawsC Offline
          clawsC Offline
          claws
          wrote on last edited by
          #5

          @oldman yea I think I could switch a new plug in when I fix the bike. Just a bit shitty that the iridium plug stopped working after like one month

          2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
          1999 YZ250 with a 1999 DTR VIN

          NINJAN 1 Reply Last reply
          0
          • clawsC claws

            @oldman yea I think I could switch a new plug in when I fix the bike. Just a bit shitty that the iridium plug stopped working after like one month

            NINJAN Offline
            NINJAN Offline
            NINJA
            wrote on last edited by NINJA
            #6

            @claws Iridium plugs tend to have a shorter lifespan over regular plugs. Mainly due to the stronger spark they produce. I used Iridium plugs in my DTR and noticed a definite drop in performance after a month's use. As plugs are as cheap_as_chips they are an easy component to replace. 😉

            SEDUCED BY THE DARK SIDE!!!

            clawsC 1 Reply Last reply
            0
            • NINJAN NINJA

              @claws Iridium plugs tend to have a shorter lifespan over regular plugs. Mainly due to the stronger spark they produce. I used Iridium plugs in my DTR and noticed a definite drop in performance after a month's use. As plugs are as cheap_as_chips they are an easy component to replace. 😉

              clawsC Offline
              clawsC Offline
              claws
              wrote on last edited by
              #7

              @NINJA kinda disappointing to spend 15 euros for a plug that doesnt even work for a month though. will go with the ngk br9es plug from now on since its like 4 euros

              2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
              1999 YZ250 with a 1999 DTR VIN

              NINJAN 1 Reply Last reply
              0
              • clawsC claws

                @NINJA kinda disappointing to spend 15 euros for a plug that doesnt even work for a month though. will go with the ngk br9es plug from now on since its like 4 euros

                NINJAN Offline
                NINJAN Offline
                NINJA
                wrote on last edited by
                #8

                @claws The iridium plugs are cheaper on ebay, especially if you buy 4 at a time like I do; :winking_face: :grinning_face_with_smiling_eyes: :winking_face:

                https://www.ebay.co.uk/itm/BR10EIX-NGK-Spark-Plug-Sparkplug-Type-Iridium-IX-NEW-No-6801/272479003527?hash=item3f7103a387:g:OWUAAOSwo4pYSYqN

                SEDUCED BY THE DARK SIDE!!!

                1 Reply Last reply
                0
                • CalumC Online
                  CalumC Online
                  Calum
                  wrote on last edited by
                  #9

                  I have had the same iridium for years. My starlet has had the same iridium for years too.

                  Always Originate, Never Pirate!

                  1 Reply Last reply
                  0
                  • D Offline
                    D Offline
                    DTRLuke
                    wrote on last edited by
                    #10

                    Yes, not normal for any spark plug to be needing replacement within a month. It'd say something about how your engine is running. Too lean or too rich.

                    clawsC 1 Reply Last reply
                    0
                    • D DTRLuke

                      Yes, not normal for any spark plug to be needing replacement within a month. It'd say something about how your engine is running. Too lean or too rich.

                      clawsC Offline
                      clawsC Offline
                      claws
                      wrote on last edited by
                      #11

                      @DTRLuke the stock carburetor was running pretty badly and i couldnt really tune it either since the screws were seized so i switched to a 36mm keihin pwk. it was running pretty good actually until i switched a few things including the fuel tank

                      2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
                      1999 YZ250 with a 1999 DTR VIN

                      D 1 Reply Last reply
                      0
                      • clawsC claws

                        @DTRLuke the stock carburetor was running pretty badly and i couldnt really tune it either since the screws were seized so i switched to a 36mm keihin pwk. it was running pretty good actually until i switched a few things including the fuel tank

                        D Offline
                        D Offline
                        DTRLuke
                        wrote on last edited by
                        #12

                        @claws
                        You can buy chinese remade DT carbs, a few people have them on their bikes. A lot probably don't even realise they have a fake carb.

                        declanD clawsC 2 Replies Last reply
                        0
                        • D DTRLuke

                          @claws
                          You can buy chinese remade DT carbs, a few people have them on their bikes. A lot probably don't even realise they have a fake carb.

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

                          @DTRLuke yeah they’re only 50 pound look decent

                          NINJAN 1 Reply Last reply
                          0
                          • declanD declan

                            @DTRLuke yeah they’re only 50 pound look decent

                            NINJAN Offline
                            NINJAN Offline
                            NINJA
                            wrote on last edited by
                            #14

                            @declan £50 quid - BARGAIN!!!

                            SEDUCED BY THE DARK SIDE!!!

                            declanD 1 Reply Last reply
                            0
                            • D DTRLuke

                              @claws
                              You can buy chinese remade DT carbs, a few people have them on their bikes. A lot probably don't even realise they have a fake carb.

                              clawsC Offline
                              clawsC Offline
                              claws
                              wrote on last edited by
                              #15

                              @DTRLuke actually paid around 50 pounds for the keihin carburetor

                              2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
                              1999 YZ250 with a 1999 DTR VIN

                              D 1 Reply Last reply
                              0
                              • NINJAN NINJA

                                @declan £50 quid - BARGAIN!!!

                                declanD Offline
                                declanD Offline
                                declan
                                wrote on last edited by
                                #16

                                @NINJA yeah it really isn’t a bad price

                                1 Reply Last reply
                                0
                                • clawsC claws

                                  @DTRLuke actually paid around 50 pounds for the keihin carburetor

                                  D Offline
                                  D Offline
                                  DTRLuke
                                  wrote on last edited by DTRLuke
                                  #17

                                  @claws The Keihin carb is probably also fake. Most carb's are fake on eBay etc. If you order one directly from Yamaha, then it's most probably OEM, but will be double the price of the fake.

                                  clawsC 1 Reply Last reply
                                  1
                                  • D DTRLuke

                                    @claws The Keihin carb is probably also fake. Most carb's are fake on eBay etc. If you order one directly from Yamaha, then it's most probably OEM, but will be double the price of the fake.

                                    clawsC Offline
                                    clawsC Offline
                                    claws
                                    wrote on last edited by
                                    #18

                                    @DTRLuke no no no i bought the carburetor as a used one that was taken from a ktm exc 125

                                    2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
                                    1999 YZ250 with a 1999 DTR VIN

                                    declanD 1 Reply Last reply
                                    0
                                    • clawsC claws

                                      @DTRLuke no no no i bought the carburetor as a used one that was taken from a ktm exc 125

                                      declanD Offline
                                      declanD Offline
                                      declan
                                      wrote on last edited by
                                      #19

                                      @claws still could be fake

                                      clawsC 1 Reply Last reply
                                      0
                                      • declanD declan

                                        @claws still could be fake

                                        clawsC Offline
                                        clawsC Offline
                                        claws
                                        wrote on last edited by
                                        #20

                                        @declan well yea but since the carburetor works i dont really care

                                        2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
                                        1999 YZ250 with a 1999 DTR VIN

                                        1 Reply Last reply
                                        0
                                        • clawsC Offline
                                          clawsC Offline
                                          claws
                                          wrote on last edited by
                                          #21

                                          oh yea i found the issue. one wire had broken and after i fixed it, my stator blew the same night i got the bike working

                                          2̶0̶0̶4̶ ̶D̶T̶1̶2̶5̶R̶E̶ ̶w̶i̶t̶h̶ ̶s̶u̶p̶e̶r̶m̶o̶t̶o̶ ̶w̶h̶e̶e̶l̶s̶ ̶a̶n̶d̶ ̶a̶ ̶1̶7̶0̶c̶c̶ ̶a̶t̶h̶e̶n̶a̶ ̶k̶i̶t̶
                                          1999 YZ250 with a 1999 DTR VIN

                                          NINJAN 1 Reply Last reply
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