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Steven Cunningham Posted on Apr 15, 2014
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MSD with Procomp Dist no spark on ONLY cyl 4

I have a older late 70's 454 Big Block. recently installed a MSD 6AL box with a procomp Distributor. Went through all the wires multiple times, new plus and spark plug wires, the dizzy is brand new with rotor. I tried reversing the 2 dizzy wires as i read online and ran crazy bad. Im having an issue with cyl 4, when i hit the gas even the slightest touch it loses spark FROM the dist, no spark through the wire. Only on the One cylinder. Im going crazy, searched all over the internet, asked all different mechanics and friends. Cant figure it out. Any Suggestions?

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Chris

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  • Posted on Nov 27, 2014
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How do you know there is no spark > My guess is low compression

David Fuell

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  • Expert 290 Answers
  • Posted on Apr 15, 2014
David Fuell
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The cap is cracked or the wire has a break in it mobte the wire to anothet plug and see if it does it there

Testimonial: "i tried 4 different wires on the one plug. Still same thing, i also took off the cap and inspected it didn't see any cracks or damages and tried an old cap i had laying around didn't change. its got me completely lost"

  • David Fuell
    David Fuell Apr 16, 2014

    it may seem that the distributor has a flat spot on the and the transducer or missing tooth in other words a bad distributor

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jturcotte

Jeffrey Turcotte

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  • Posted on Jun 19, 2011

SOURCE: just need spark wiring diagram

Please let me know if you have more questions, and thanks for using FixYa.
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