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  • #16
    Originally posted by CA View Post
    Randy, actually that was reading directly from the coil itself. the orange and gray wires complete the circuit and read 11.7 if I remember correctly. All I know is the coil "negative," opposite the positive line reads 1.7. I just thought that was strange.
    CA,

    Actually, you've got that a bit upside-down. The red/white is the positive lead to both coils. The gray and the orange are the negative that go to the TCI. The TCI grounds them intermittently to fire the coils.

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    • #17
      Right those were the words in my head that didn't translate to my fingers ha. jk.

      I am bad about articulating electical issues. That's what you get from a divinity school student!
      1979 XS1100SF (4-1 Kerker, XS Pods, 145 mains, 45 pilots, drag bars, blacked out)

      Comment

      • #18
        How do you test ohms? I have a digital meter that does it all, but I can't get a reading on the four pronged thing at the tci box, but I have never done it before.

        Do I groung it then stick it in the plug?
        1979 XS1100SF (4-1 Kerker, XS Pods, 145 mains, 45 pilots, drag bars, blacked out)

        Comment

        • #19
          No, you test between the upper pair for one pickup, the lower pair for the other pickup. Value should be 720 Ohms +/- 20%


          Somewhere between 600 - 860 is OK.

          Oh, remove the plug from the TCI and test the plug, not the TCI

          Comment

          • #20
            If you still have your old coils swap in the good one. That would tell you if the problem is directly related to the coil.

            Enroute to XSEast my cylinders began dropping out after running through a cold fog but cleared as the weather did. Extra moisture facilitates shorting of coils.
            Darrell
            78E
            80G project
            06FJR

            Comment

            • #21
              Yes I have have .744 on my K ohms reading for both pairs. hmmm

              btw: the recap is the starter turns it over but absolutely no ignition. I have spark but I guess not at the right time?
              1979 XS1100SF (4-1 Kerker, XS Pods, 145 mains, 45 pilots, drag bars, blacked out)

              Comment

              • #22
                Originally posted by CA View Post
                Yes I have have .744 on my K ohms reading for both pairs. hmmm

                btw: the recap is the starter turns it over but absolutely no ignition. I have spark but I guess not at the right time?
                now remove the timing cover on the left side, put your probes back on one pair of the wires at the TCI plug and wiggle and gently pull the wires under the timing cover and see if your reading changes. If it does change you'll need to do the pickup wire fix. If not you've got the cover off so you might as well verify the timing.
                1979 xs1100 Special -
                Stock air box/K&N Filter, MAC 4-2 exhaust, Bad-Boy Air horn, TC fuse box, Windshield, Soft bags, Vetter Fairing, Blinkers->Run/Turn/Brake Lights, Headlight Modulator, hard wire GPS power

                Short Stack - 1981 xs1100 Standard - lowered for SWMBO.

                Originally posted by fredintoon
                Goes like a train, corners like a cow, shifts like a Russian tractor, drinks like a fish, you are gonna love it.
                My Bike:
                [link is broken]

                Comment

                • #23
                  Sorry if this has been covered before. If you changed the coils, or rewired the pickups or any of that, you might have the coils backwards. You can switch the connectors between the coils and see if that changes it.
                  Life is what happens while your planning everything else!

                  When your work speaks for itself, don't interrupt.

                  81 XS1100 Special - Humpty Dumpty
                  80 XS1100 Special - Project Resurrection


                  Previously owned
                  93 GSX600F
                  80 XS1100 Special - Ruby
                  81 XS1100 Special
                  81 CB750 C
                  80 CB750 C
                  78 XS750

                  Comment

                  • #24
                    Those pickup wires are as solid as a rock!

                    Dgsxer that occured to me as well as it happened when I first installed them

                    THis just in. THe red "thicker" wire next to the orange wire on the tci plug is not providing any voltage. Not sure if it is supposed to . All other colored ones around it read a steady 9.4 (my battery is only at 11.3 because of lots of cranking!)
                    1979 XS1100SF (4-1 Kerker, XS Pods, 145 mains, 45 pilots, drag bars, blacked out)

                    Comment

                    • #25
                      Actually the rest read a 10.9...measured from the other side and got a better reading.

                      Im so glad my boss gave me a (fix you bike day)!
                      1979 XS1100SF (4-1 Kerker, XS Pods, 145 mains, 45 pilots, drag bars, blacked out)

                      Comment

                      • #26
                        Maybe this will help? Click on the pic to enlarge it for detail.

                        Comment

                        • #27
                          Is it red/white or red/yellow? Red/white should only be "hot" when your cranking.

                          PS get that battery charged up - i'll never start with a weak battery!
                          1979 xs1100 Special -
                          Stock air box/K&N Filter, MAC 4-2 exhaust, Bad-Boy Air horn, TC fuse box, Windshield, Soft bags, Vetter Fairing, Blinkers->Run/Turn/Brake Lights, Headlight Modulator, hard wire GPS power

                          Short Stack - 1981 xs1100 Standard - lowered for SWMBO.

                          Originally posted by fredintoon
                          Goes like a train, corners like a cow, shifts like a Russian tractor, drinks like a fish, you are gonna love it.
                          My Bike:
                          [link is broken]

                          Comment

                          • #28
                            Yes number 6. And I tried to crank it it it came alive.

                            Ha and that was my best guess!

                            Regardless, thanks for your sticking with me fellas!
                            1979 XS1100SF (4-1 Kerker, XS Pods, 145 mains, 45 pilots, drag bars, blacked out)

                            Comment

                            • #29
                              Can you spot the at least 1 difference?

                              (Sorry for the poor cell quality)





                              may be nothing but at least its fun!
                              1979 XS1100SF (4-1 Kerker, XS Pods, 145 mains, 45 pilots, drag bars, blacked out)

                              Comment

                              • #30
                                Hold the phone...

                                You say you had the trouble occur after switching to new coils? Are you 100 percent you didn't get the primary leads from the TCI swapped? Making the coils fire at the wrong time? Is your firing order right? Should be that one coil fires the middle cylinders and one fires the outter cylinders.

                                Sounds like it might be time to follow the mechanic's alphabet: ACBF (Always Check Basics First)

                                Hope it works out for you soon. These things can be such a pain.
                                Ich habe dich nicht gefragt.

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