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No Spark!

Discussion in 'S30 (240Z,260Z,280Z) Electrical' started by Peato40, Mar 14, 2018.

  1. Peato40

    Peato40
    Z Club Member

    Hi All,

    I've modified my L26 by fitting a 280z distributor and wired it as suggested in the picture below, but I'm not getting a spark at the plug, so my questions are:

    1.) Is it wired incorrectly?
    2.) which wire needs to be installed to give the tacho it's signal?

    [​IMG]
     
  2. Peato40

    Peato40
    Z Club Member

  3. Rob Gaskin

    Rob Gaskin Membership Secretary Staff Member Committee Member

    Your diagram looks correct.

    The tacho works via the 'loop' that you show (with connector).
     
  4. Peato40

    Peato40
    Z Club Member

    Hi Rob, but I don't understand how ..... connecting those two wires is simply a case of removing the resistor because there isn't points now.

    I guess the module may be faulty then ..... have you any tricks up your sleeve for testing?
     
  5. Rob Gaskin

    Rob Gaskin Membership Secretary Staff Member Committee Member

    The resistor is in the circuit that feeds the coil through the tacho. , so when the resistor is removed you have to complete the circuit again.

    If you connect the wrong b/w wire to the coil the tacho will not get a signal.

    The resistor was a device used to improve starting (short circuited during starting) and is not directly a points requirement - I still had one on a 240 with electronic ignition.

    Is your coil a known quantity and is it a 12v coil?
     
  6. Peato40

    Peato40
    Z Club Member

    I'm pretty sure that I connected the black and white wire from the ignition switch with the green and white ..... but I will double check.
    The coil is new but I wouldn't say it's a quality brand. I've measured it and found it to be 3 ohm .... primary and secondary coils are healthy, so should produce some kind of a spark, shouldn't it?
     
  7. jonbills

    jonbills
    ZClub Administrator
    Staff Member Committee Member

    Are you sure you’ve got C&B the right way around on dizzy? My aftermarket one isn’t marked.
    Also on my loom, I don’t think they’re both b/w, one of them looks black/yellow.
     
  8. Peato40

    Peato40
    Z Club Member

    Hi Jon< yes I double checked and have wires to C&B the right way around ..... Also double checked all wiring and found to be as it should be.
     
  9. Peato40

    Peato40
    Z Club Member

    Now I think I know what the problem is. I stripped down the dizzy and tested the resistance of the pick up coil and found it to be zero Ohms

    Anybody got one spare or know where I might source one?

    [​IMG]
     

    Attached Files:

  10. Peato40

    Peato40
    Z Club Member

  11. toopy

    toopy
    Z Club Member

  12. Peato40

    Peato40
    Z Club Member

    Thanks tippy but it's the round coil that fits inside the dizzy that I need.
     
  13. toopy

    toopy
    Z Club Member

    Ah ok, can't say I've ever come across the other part before, new or otherwise! MrF may be able to help :)
     
  14. jonbills

    jonbills
    ZClub Administrator
    Staff Member Committee Member

    Did you get this sorted?
    I’m trying to get my 280zx dizzy working again (at the same time as installing the Nodiz! - I don’t want to throw the dizzy away nor do I want to put it in the loft broken)

    I’ve got a new module, coil, rotor and cap and still it doesn’t go, so it’s probably the reluctor/magnet or maybe my new module is duff.

    I’ve been going through the FSM tests and I’m stumped on the coil output test - says the ac output signal should fluctuate as the dizzy rotates, with a pic of an analogue dial gauge. My digital meter shows a tiny fluctuation, and I can’t decide if thats a pass or fail.
    Anyone got any experience of testing the output from the coil?
    Anyone fancy testing a working one on a digital meter for me?

    Ta!
     
  15. AliK

    AliK
    Z Club Committee
    Committee Member

    Mr Billsmills, you need ideally an oscilloscope or an analogue multimeter- this is precisely why I never threw mine away
     
  16. jonbills

    jonbills
    ZClub Administrator
    Staff Member Committee Member

    Thanks Ali. That’s a great help
     
  17. AliK

    AliK
    Z Club Committee
    Committee Member

    My rates are very reasonable ;)
     

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