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1980 Porsche 924 no spark

  • 19-01-2021 6:38am
    #1
    Registered Users Posts: 3 Noelie13


    Hi everyone. I'm stuck with getting my 924 (2.0ltr) to start. It turns over perfectly, but I have no spark. There is very weak power at the live connection on the ignition coil. If I run a direct live from the battery it will start and run for a few seconds then cuts out. I've checked all fuses and they are good. Just wondering has anyone come across this before?


Comments

  • Registered Users Posts: 1,062 ✭✭✭ Redriddick


    Noelie13 wrote: »
    Hi everyone. I'm stuck with getting my 924 (2.0ltr) to start. It turns over perfectly, but I have no spark. There is very weak power at the live connection on the ignition coil. If I run a direct live from the battery it will start and run for a few seconds then cuts out. I've checked all fuses and they are good. Just wondering has anyone come across this before?

    Bad earth??


  • Moderators, Home & Garden Moderators Posts: 4,749 Mod ✭✭✭✭ kadman


    Ditto.

    Bad earth at battery, engine to gearbox or engine /gearbox to chassis if fitted.


  • Registered Users Posts: 51 ✭✭ T5180


    By weak power at the coil do you mean less than 12volts? Is there is a ballast resistor on the supply to the coil ? if so ,that would explain why .


  • Registered Users Posts: 3 Noelie13


    From what I can see it does not have a balist resistor. I have a wiring diagram in a Haynes manual. It has a transistor ignition unit (ignition module) I have 12v and good ground at it but only about 3v at the live terminal at the coil. I am thinking of getting a second hand one off eBay and seeing does that cure it.


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