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    No spark on #2

    Was doing spark tests just to make sure all the plugs work right, and noticed that #2 was giving no spark at all, I put on a different spark plug to make sure that the plug wasnt the issue and it wasnt.

    #4 works so I'm not sure if i can rule out the coilpack or not.

    How does one go about replacing the coil wires on a GS? I see that they're glued in place and not sure if they're internally connected or not.
    Ian

    1982 GS650GLZ
    1982 XS650

    #2
    My mistake, 2 & 3 go together, either way only 2 doesnt work but the rest do.
    Ian

    1982 GS650GLZ
    1982 XS650

    Comment


      #3
      How are accel coilpack wires? Are 8.8mm what i should be looking for
      Ian

      1982 GS650GLZ
      1982 XS650

      Comment


        #4
        See if you can swap over the leads from 2 to 3 and see if the missing spark moves.
        Corrosion in the last 1/4" of the HT lead can cause problems and is cured by cutting back to clean core.
        If that test is negative then swap the end caps on the leads.
        97 R1100R
        Previous
        80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

        Comment


          #5
          Originally posted by Brendan W View Post
          See if you can swap over the leads from 2 to 3 and see if the missing spark moves.
          Corrosion in the last 1/4" of the HT lead can cause problems and is cured by cutting back to clean core.
          If that test is negative then swap the end caps on the leads.
          I've had to do it before a couple times and I've had success (cutting back on the leads) but that success keeps coming short after a while. The rubber insulator is pretty dry and cruddy aswell.

          How do I switch them? And if they're able to be switched, does that mean they're able to be replaced?


          The caps are also new, and recently tested for the resistance, all are good.
          Ian

          1982 GS650GLZ
          1982 XS650

          Comment


            #6
            Originally posted by timebombprod View Post
            I've had to do it before a couple times and I've had success (cutting back on the leads) but that success keeps coming short after a while. The rubber insulator is pretty dry and cruddy aswell.

            How do I switch them? And if they're able to be switched, does that mean they're able to be replaced?
            Pull the leads off the two plugs only and switch them over. They fire together, no drama.
            Running in the dark is a good way to see HT spark leakage. If for example a plug cap is open cct the spark will find ways of jumping from the lead to the head.
            Damp or dirty leads will allow spark to leak and this is what WD-40 was invented for.
            Your leads may or may not have the outer sleeve that slides over the plug cap to keep water out.
            97 R1100R
            Previous
            80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

            Comment


              #7
              Originally posted by Brendan W View Post
              Pull the leads off the two plugs only and switch them over. They fire together, no drama.
              Running in the dark is a good way to see HT spark leakage. If for example a plug cap is open cct the spark will find ways of jumping from the lead to the head.
              Damp or dirty leads will allow spark to leak and this is what WD-40 was invented for.
              Your leads may or may not have the outer sleeve that slides over the plug cap to keep water out.
              Are leads the ends of the wire, sorry new terminology
              Ian

              1982 GS650GLZ
              1982 XS650

              Comment


                #8
                Originally posted by timebombprod View Post
                Are leads the ends of the wire, sorry new terminology
                My bad
                Swap over the two HT leads at the spark plugs, 2&3.
                The idea is that the fault lies either in the lead itself or the cap.
                If you can make the dead spark move you are on to something.
                97 R1100R
                Previous
                80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

                Comment


                  #9
                  Originally posted by Brendan W View Post
                  My bad
                  Swap over the two HT leads at the spark plugs, 2&3.
                  The idea is that the fault lies either in the lead itself or the cap.
                  If you can make the dead spark move you are on to something.
                  Wait are the leads the two wire connections on the coilpack? If I'm correct I'd only really have to test #3 for the dead spark and if it still has spark to it, than the problem is running from the coilpack wire to the plug cap, somewhere in that area.
                  Ian

                  1982 GS650GLZ
                  1982 XS650

                  Comment


                    #10
                    Originally posted by timebombprod View Post
                    Wait are the leads the two wire connections on the coilpack? If I'm correct I'd only really have to test #3 for the dead spark and if it still has spark to it, than the problem is running from the coilpack wire to the plug cap, somewhere in that area.
                    No. The HT, high tension, leads are the fat leads from the coil to the spark plugs. If the HT lead and or cap are faulty the fault will move when you swap the HT leads over.
                    97 R1100R
                    Previous
                    80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

                    Comment


                      #11
                      Originally posted by Brendan W View Post
                      No. The HT, high tension, leads are the fat leads from the coil to the spark plugs. If the HT lead and or cap are faulty the fault will move when you swap the HT leads over.
                      Oh, gotta remove mine and the glue sealing them in place, guessing it's original.

                      I did however, see spark coming from the lead without the cap being on from #2. I really think its a bad connection from the lead to the cap, I've been struggling getting the cap to twist in the lead properly seems like the rubber is not so malleable. I've also cut the thing so darn short because there was plenty of tears throughout the rubber insulation.
                      Ian

                      1982 GS650GLZ
                      1982 XS650

                      Comment


                        #12
                        I guess my next question is what's some good leads to buy (even though I dont need them...)? Gonna get 2 new caps aswell and make sure I dont use the cap that was on #2. I ordered 4 inner caps a little back and gonna get two outer caps just to make it look cleaner.

                        Smart? Eh. Gonna work though? Ye.

                        Edit: ended up getting a bundle of two outer caps and lead wire, not the best route if I was trying to save money but I'm just trying to get it all done. Got some more lead wire separately aswell.
                        Last edited by timebombprod; 03-06-2021, 08:16 AM.
                        Ian

                        1982 GS650GLZ
                        1982 XS650

                        Comment


                          #13
                          Put new leads on. Yours must be shot if you’re already showing splits further down.... accell or dyna leads will work. You can sometimes get the stock ones out. There is a spike behind. Shove the new wire in and silicon around to Hold it (or epoxy if you never want to replace again).

                          it’s usually about 50/50 as to whether you can successfully get them out. There are threads here on the process with pics somewhere.
                          1980 GS1000G - Sold
                          1978 GS1000E - Finished!
                          1980 GS550E - Fixed & given to a friend
                          1983 GS750ES Special - Sold
                          2009 KLR 650 - Sold - gone to TX!
                          1982 GS1100G - Rebuilt and finished. - Sold
                          2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

                          www.parasiticsanalytics.com

                          TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

                          Comment


                            #14
                            Originally posted by salty_monk View Post
                            Put new leads on. Yours must be shot if you’re already showing splits further down.... accell or dyna leads will work. You can sometimes get the stock ones out. There is a spike behind. Shove the new wire in and silicon around to Hold it (or epoxy if you never want to replace again).

                            it’s usually about 50/50 as to whether you can successfully get them out. There are threads here on the process with pics somewhere.
                            Have new leads, still having the issue, guy who was working on our back porch has a few old bikes and ended up helping me out, I have continuity everywhere except he wasnt able to check the ignition system and the wires connecting to it. The negative wire hopefully is the issue but I'm gonna find out tonight or tomorrow out of town right now. Had to get a test light and also ordered a clymer manual. Right now the negative sides of the coils arent sparking


                            The old leads were glued in and super brittle so I took a grinder and took off some of the plastic on the top to get to the rubber that wouldn't come out, could've done something else but it's fine for me.
                            Last edited by timebombprod; 03-14-2021, 05:32 PM.
                            Ian

                            1982 GS650GLZ
                            1982 XS650

                            Comment


                              #15
                              I have had wires without a cap on arc to the engine and put cap on and plug wont fire. End result was the resistor fried. Unscrew the brass gripper thing..its slotted for a screwdriver. Dump out the guts and replace the resistor with a piece of steel rod or other conductive rod comparable in thicknss. cut to length ond reinstall guts into cap. NOTE that caps 2 and 3 ae a spring. Spring goes in first then replacement blank. Screw in the gripper thing. If this solves it i suggest you eliminate all the resistors and never have the problem again.
                              MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                              1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                              NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                              I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

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