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DT125R FORUM

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  4. No spark!

No spark!

Scheduled Pinned Locked Moved Electrics
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  • declanD declan

    @NINJA the wires are colour coded and I marked every wire that was important to the starting and running of the engine

    declanD Offline
    declanD Offline
    declan
    wrote on last edited by
    #9

    @declan so to rule out a few things, will the dt start without the ignition barrel,will the neutral circuit cause problems if the wire is not looped, would the clutch circuits also cause problems if it’s not looped

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    • declanD declan

      @NINJA the wires are colour coded and I marked every wire that was important to the starting and running of the engine

      declanD Offline
      declanD Offline
      declan
      wrote on last edited by
      #10

      https://imgur.com/a/opX7k1M
      I found these wires wrapped up two of them are joined together I can’t remember if there were other joined like this, they come from the same loom as the battery wires

      declanD 1 Reply Last reply
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      • declanD declan

        https://imgur.com/a/opX7k1M
        I found these wires wrapped up two of them are joined together I can’t remember if there were other joined like this, they come from the same loom as the battery wires

        declanD Offline
        declanD Offline
        declan
        wrote on last edited by declan
        #11

        Okay, looks like the problem is the ignition coil when I remove the wire and kick the bike it shocks me yet when I connect it back up the plug still doesn’t spark I already have one on order so I’ll update when I’ve fitted it...(edit- by remove the wire I mean the direct feed from the cdi to the ignition

        NINJAN 1 Reply Last reply
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        • declanD declan

          Okay, looks like the problem is the ignition coil when I remove the wire and kick the bike it shocks me yet when I connect it back up the plug still doesn’t spark I already have one on order so I’ll update when I’ve fitted it...(edit- by remove the wire I mean the direct feed from the cdi to the ignition

          NINJAN Offline
          NINJAN Offline
          NINJA
          wrote on last edited by
          #12

          @declan Are there any breaks in the wire, which could be causing a short circuit???

          SEDUCED BY THE DARK SIDE!!!

          declanD 1 Reply Last reply
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          • NINJAN NINJA

            @declan Are there any breaks in the wire, which could be causing a short circuit???

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

            @NINJA nope, just seems the coil went dead

            NINJAN 1 Reply Last reply
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            • declanD declan

              @NINJA nope, just seems the coil went dead

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

              @declan OK well hopefully a new coil will resolve the issue???

              SEDUCED BY THE DARK SIDE!!!

              declanD 2 Replies Last reply
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              • NINJAN NINJA

                @declan OK well hopefully a new coil will resolve the issue???

                declanD Offline
                declanD Offline
                declan
                wrote on last edited by
                #15

                @NINJA it should do

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                • NINJAN NINJA

                  @declan OK well hopefully a new coil will resolve the issue???

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

                  @NINJA never that simple is it 😕 I have power before the coil but when connected up I get nothing

                  NINJAN 1 Reply Last reply
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                  • declanD declan

                    @NINJA never that simple is it 😕 I have power before the coil but when connected up I get nothing

                    NINJAN Offline
                    NINJAN Offline
                    NINJA
                    wrote on last edited by
                    #17

                    @declan Are you sure that the correct wires are connected to the right terminals bud???

                    SEDUCED BY THE DARK SIDE!!!

                    declanD 1 Reply Last reply
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                    • NINJAN NINJA

                      @declan Are you sure that the correct wires are connected to the right terminals bud???

                      declanD Offline
                      declanD Offline
                      declan
                      wrote on last edited by
                      #18

                      @NINJA yeah just as the original was, it will shock me every time but the second that power wire touches the ht terminal the power vanishes

                      NINJAN 1 Reply Last reply
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                      • declanD declan

                        @NINJA yeah just as the original was, it will shock me every time but the second that power wire touches the ht terminal the power vanishes

                        NINJAN Offline
                        NINJAN Offline
                        NINJA
                        wrote on last edited by
                        #19

                        @declan It sounds like you have a short somewhere else? Re-check all the wires as something is a miss.

                        SEDUCED BY THE DARK SIDE!!!

                        declanD 1 Reply Last reply
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                        • NINJAN NINJA

                          @declan It sounds like you have a short somewhere else? Re-check all the wires as something is a miss.

                          declanD Offline
                          declanD Offline
                          declan
                          wrote on last edited by
                          #20

                          @NINJA I can’t find anything wrong it doesent make any sense I could understand if it was weak power but no power at all is flowing through

                          NINJAN 1 Reply Last reply
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                          • declanD declan

                            @NINJA I can’t find anything wrong it doesent make any sense I could understand if it was weak power but no power at all is flowing through

                            NINJAN Offline
                            NINJAN Offline
                            NINJA
                            wrote on last edited by
                            #21

                            @declan Well something is causing the issue, try using a volt meter to check volt's & Amps etc

                            SEDUCED BY THE DARK SIDE!!!

                            declanD 1 Reply Last reply
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                            • NINJAN NINJA

                              @declan Well something is causing the issue, try using a volt meter to check volt's & Amps etc

                              declanD Offline
                              declanD Offline
                              declan
                              wrote on last edited by
                              #22

                              @NINJA how do I go about testing things I have my multimeter now

                              NINJAN 1 Reply Last reply
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                              • declanD declan

                                @NINJA how do I go about testing things I have my multimeter now

                                NINJAN Offline
                                NINJAN Offline
                                NINJA
                                wrote on last edited by
                                #23

                                @declan Look in the Haynes/Owners manual there should be a list of voltages. You then just put one probe one each wire and check your readings against the ones listed.

                                SEDUCED BY THE DARK SIDE!!!

                                declanD 1 Reply Last reply
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                                • NINJAN NINJA

                                  @declan Look in the Haynes/Owners manual there should be a list of voltages. You then just put one probe one each wire and check your readings against the ones listed.

                                  declanD Offline
                                  declanD Offline
                                  declan
                                  wrote on last edited by
                                  #24

                                  @NINJA hi, I have looked but I’m not familiar with wiring in general I don’t know which ones I’m supposed to be testing

                                  NINJAN 1 Reply Last reply
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                                  • declanD declan

                                    @NINJA hi, I have looked but I’m not familiar with wiring in general I don’t know which ones I’m supposed to be testing

                                    NINJAN Offline
                                    NINJAN Offline
                                    NINJA
                                    wrote on last edited by NINJA
                                    #25

                                    @declan The ones to the coil would be the first place I would look. Then check any other wires associated with the ignition system. I suspect that you have something either not connected correctly or an earth is failing? Scrape some paint off underneath the ground eyelets to ensure that you have a good earth, as a bad earth will cause a short circuit and give you problems. 😉

                                    SEDUCED BY THE DARK SIDE!!!

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                                    • O Offline
                                      O Offline
                                      oldman
                                      wrote on last edited by
                                      #26

                                      From experience the earths are prone to fail on old looms, check continuity using your multimeter from various places. Have you unwrapped the loom around coil area? Definitely worth checking, look through my red bike posts and you will see I had to renew earth from that area. Earth cable oxidised internally and started intermittently failing and quickly failed altogether .

                                      declanD 1 Reply Last reply
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                                      • O oldman

                                        From experience the earths are prone to fail on old looms, check continuity using your multimeter from various places. Have you unwrapped the loom around coil area? Definitely worth checking, look through my red bike posts and you will see I had to renew earth from that area. Earth cable oxidised internally and started intermittently failing and quickly failed altogether .

                                        declanD Offline
                                        declanD Offline
                                        declan
                                        wrote on last edited by
                                        #27

                                        @oldman I figure it has to be the stator because when I hold the power wires coming from the stator I get a decent shock but when I do the same but on my 50cc the jolt is easily 4or 5 times more powerful

                                        NINJAN 1 Reply Last reply
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                                        • declanD declan

                                          @oldman I figure it has to be the stator because when I hold the power wires coming from the stator I get a decent shock but when I do the same but on my 50cc the jolt is easily 4or 5 times more powerful

                                          NINJAN Offline
                                          NINJAN Offline
                                          NINJA
                                          wrote on last edited by
                                          #28

                                          @declan Dude you've gotta stop trying to electrocute yourself!!! :grinning_face_with_smiling_eyes: :smiling_face_with_open_mouth_closed_eyes: :smiling_face_with_open_mouth_cold_sweat: :face_with_tears_of_joy: 🤣 🤣 🤣

                                          SEDUCED BY THE DARK SIDE!!!

                                          declanD 1 Reply Last reply
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