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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 there’s no fuse fitted no earth was removed the 4 wires I had to snip and re fit are in good order with new connectors I’m a lil lost

    NINJAN Offline
    NINJAN Offline
    NINJA
    wrote on last edited by
    #7

    @declan Did you take any photo's of the bike pre/mid disassemble? If yes then refer back to them and look for any differences between the old & new installations.

    SEDUCED BY THE DARK SIDE!!!

    declanD 1 Reply Last reply
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    • NINJAN NINJA

      @declan Did you take any photo's of the bike pre/mid disassemble? If yes then refer back to them and look for any differences between the old & new installations.

      declanD Offline
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      declan
      wrote on last edited by
      #8

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

      declanD 2 Replies Last reply
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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

                    1 Reply 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
                      #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!!!

                                        1 Reply Last reply
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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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