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  1. #1
    Resident electronics hacker UnityRacing's Avatar
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    Front coil no spark?

    I'm using an ignition tester and get a good light on the middle and rear cylinders. Nothing at all on the front.

    Tried swapping coils from middle to front. Still no spark.
    Tried swapping plug wires from rear to front. Still no spark.
    Tried a new plug in the front cyl. Still no spark.
    Tried a different EMM. Still no spark.
    Tried disconnecting the TPS. Still no spark.
    Tested the wire from the EMM to the coil, have continuity and it reads .02 ohm.
    Cleaned all coil ground tabs and wiring posts. No help.

    Battery is an optima blue top, fully charged, 13+v. I'm reading 20+v on the injectors while plugged in.

    What's next??

    02 Virage TXi


  2. #2
    Resident electronics hacker UnityRacing's Avatar
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    Removed the flywheel. Everything looks good. Thought maybe it was damaged and not picking up the signal to fire.

  3. #3
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    On a DI the flywheel only generates the power to run the ski. It has nothing to do with ignition timing except for the encoder ribs that are picked up by the CPS.

    Im guessing if its not the coil its the EMM.

  4. #4
    Resident electronics hacker UnityRacing's Avatar
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    I have already tried swapping in another EMM. Same issue.

  5. #5
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    Then I would try another coil

  6. #6
    Resident electronics hacker UnityRacing's Avatar
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    I tried moving the middle coil to the front. The middle coil was getting a strong spark until I moved it to the front, now it does nothing.

    Wiring harness maybe?

  7. #7
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    Did you check the plug wire from the coil to the plug?

  8. #8
    Resident electronics hacker UnityRacing's Avatar
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    Yes I swapped with another wire that was firing. No change.

  9. #9
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    Then i would check the wire harness. Check the 40 pin emm connector and test that circuit in the harness

  10. #10
    Resident electronics hacker UnityRacing's Avatar
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    Tested the wire from the EMM to the coil, have continuity and it reads .02 ohm.

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