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  1. #1
    Master Lancista kiwirgv's Avatar
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    Sudden loss of spark

    Hi all-
    another query:

    I started my 1,3s this morning to go to work.
    It started just the same as it always does after not being used a few weeks, quickly settling into a fast idle with a bit of choke.

    After about 15 secs, it suddenly cut out.
    No warning, no stutter or hesitation, not gradual.
    Just stopped.

    Now I’m back from work, I’ve checked and it seems it’s not producing a spark.

    Anyone have an idea as what could cause this, or next steps to help diagnose?
    Many thanks-
    josh

  2. #2
    Master Lancista bernt's Avatar
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    Re: Sudden loss of spark

    Quote Originally Posted by kiwirgv View Post
    I’ve checked and it seems it’s not producing a spark.
    My first guess would be the coil. If not that, stepping through all ignition components one by one seems like the obvious route. I'd go from "easy to check" to the more difficult. Something broken in the cap? Loose cable? Etc...

    Bernt

  3. #3
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    Re: Sudden loss of spark

    I had a similar fuss with my Sport, ran fine then simply would not start. I chased through the ignition and eventually found the distrbutor had slipped slightly and the plugs were fouled. In anycase it is, as mentioned simply working through each piece at a time- coil resistance, points correct etc..

    Quote Originally Posted by kiwirgv View Post
    Hi all-
    another query:

    I started my 1,3s this morning to go to work.
    It started just the same as it always does after not being used a few weeks, quickly settling into a fast idle with a bit of choke.

    After about 15 secs, it suddenly cut out.
    No warning, no stutter or hesitation, not gradual.
    Just stopped.

    Now I’m back from work, I’ve checked and it seems it’s not producing a spark.

    Anyone have an idea as what could cause this, or next steps to help diagnose?
    Many thanks-
    josh

  4. #4
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    Re: Sudden loss of spark

    I'd start by switching out the condenser.

  5. #5
    Legendary Lancista lancialulu's Avatar
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    Re: Sudden loss of spark

    Check fuse #1 ans #2. Then check the coil primary and secondary impedance (c10kohm, c3ohm).

  6. #6
    Active Lancista D5177_55A's Avatar
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    Re: Sudden loss of spark

    Rotor arm?

  7. #7
    Legendary Lancista Marnix's Avatar
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    Re: Sudden loss of spark

    A very much overlooked component is the capacitor in the distributor (to avoid sparking on the contact breaker). It often fails when "expired" (old age), but in a rather unpredictable way (rarely just breaks down, it sometime works, and then it suddenly doesn't), leading to very mysterious behavior.
    Lancia Fulvia 2C 1964
    Lancia Fulvia Coupe Rallye 1,3 1968
    Porsche 924 1979
    Alfa Romeo 33 1.4IE 1993

  8. #8
    Master Lancista Professorgearhead's Avatar
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    Re: Sudden loss of spark

    Speaking of capacitors...... on a recent rally, onecar suddenly stopped dead, as described here. Working backwards, the culprit was a broken wire—the little short one leading to the capacitor. Nothing visible, of course, but broken inside. Good luck, and let us know what stopped the engine
    Quote Originally Posted by Marnix View Post
    A very much overlooked component is the capacitor in the distributor (to avoid sparking on the contact breaker). It often fails when "expired" (old age), but in a rather unpredictable way (rarely just breaks down, it sometime works, and then it suddenly doesn't), leading to very mysterious behavior.
    Thor Frohn-Nielsen
    '72 Lancia Fulvia 1600

  9. #9
    Master Lancista kiwirgv's Avatar
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    Re: Sudden loss of spark

    Thanks for the suggestions gents.
    I’ll see how I get on this weekend and report back

  10. #10
    Legendary Lancista lancialulu's Avatar
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    Re: Sudden loss of spark

    Coils tend to fail if left with no ignition on an engine stopped. They “melt” inside.....after say 20 minutes....

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