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  • New Dynas, no spark

    Hey fellas. Put on some new dyna coils last night. The green 3 ohm ones. I bypassed my ballast resistor. I used Accell SuperStock Wire. The wire is 8mm radio supression core. I couldnt get any spark. Today i re-read everything about coils in the tech tips and everything i could find after searching "dyna coil" And compared it to how ive got it wired up on my bike. It all checks out. If i ohm across the plug boots, i get ~35k reading. Anyone know if this sounds about right? Where's my spark?
    1980 XS1100 SG Stock

  • #2
    35k Is high but if you are using resistor wires and resistor caps that would be why It Is high.

    Do you have a signal coming to the coils from the TCI? What is your resistance on the other side of the coil.
    Nathan
    KD9ARL

    μολὼν λαβέ

    1978 XS1100E
    K&N Filter
    #45 pilot Jet, #137.5 Main Jet
    OEM Exhaust
    ATK Fork Brace
    LED Dash lights
    Ammeter, Oil Pressure, Oil Temp, and Volt Meters

    Green Monster Coils
    SS Brake Lines
    Vision 550 Auto Tensioner

    In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

    Theodore Roosevelt

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    • #3
      resistance is ~3.5 on the other side. Not sure of the test procedure for a TCI signal, but it was firing before the upgrade. I just had a coil going bad.
      1980 XS1100 SG Stock

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      • #4
        Like Nate said, 35k ohms seems a bit high, but these are supposed to be stronger coils generating much higher KV levels, so would think they should be able to push thru the extra 10K vs. OEM??

        Have you checked to make sure you have 12 volts at the red/white wires at the coils low tension leads??

        Also, you have to have spark plugs plugged into both ends of the single coil and properly grounded to the engine/head so that the spark can travel thrun both wires and the engine.

        T.C.
        T. C. Gresham
        81SH "Godzilla" . . .1179cc super-rat.
        79SF "The Teacher" . . .basket case!
        History shows again and again,
        How nature points out the folly of men!

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        • #5
          In light of recent events, do you have the kill switch in the "run" position?
          CZ

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          • #6
            Ya know somethin' Capn' Zap? It might as well have been that obvious. Top Cat called it when he said that both plugs needed to be grounded. I just had the other side dangling free. I would feel dumb, but...eh. I dont wanna. Thanks again T.C.! Not the first time you've come to my rescue.
            1980 XS1100 SG Stock

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            • #7
              Originally posted by CaptonZap View Post
              In light of recent events, do you have the kill switch in the "run" position?
              CZ
              LOL ain't that the truth
              Nick

              1979 XS11 F,Yamaha fairings w/hard bags, TC's fuse box, K&N air filter

              1982 Virago 750 (it's alive!)

              1979 XS 11 F, Windjammer IV, Samsonite luggage cases(another rescue)

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