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Help with skip Please

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Old Jun 19, 2025 | 05:16 PM
  #1  
Townie's Avatar
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From: Rhode Island
Help with skip Please

72 Supreme 350 4 barrel edelbrock, hei conversion. Was running great since new carb and wires over the winter. While driving to a cruise it started to skip, it smells like fumes maybe gas. I pulled a plug wire off each cylinder one at a time and no change, also put one of the old plugs in each cylinder to see if it was a bad plug with no change. Maybe the wires are ng. It’s a cheap billet distributor that’s been in the car for over 10 years. What’s the next step? I’m not a mechanic but I try. Any advice would be greatly appreciated. Thanks Arthur
Old Jun 19, 2025 | 06:19 PM
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Originally Posted by Townie
It’s a cheap billet distributor that’s been in the car for over 10 years.
How about the module ? Mileage and years in use ?
Old Jun 19, 2025 | 06:47 PM
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Hi still the original module about 10k on the mileage. I checked inside the cap and cleaned the contact points, I didn’t see any cracks. Would the module make it have intermittent skipping? Thanks
Old Jun 19, 2025 | 06:47 PM
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Here from one of this site's finer members whose advice you can take to the bank.

Originally Posted by Fun71
As stated, an electronic module can start failing and have all sorts of issues before it completely stops working. Operation can become intermittent and/or have degraded spark output when it gets hot and then it works fine after it cools down. The coil can have similar reduced voltage output when it's hot but work fine when it's cold.
Quote above from this thread here, post #20 https://classicoldsmobile.com/forums...sfiring-75248/
Old Jun 19, 2025 | 07:23 PM
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Originally Posted by Townie
Would the module make it have intermittent skipping?
Yes. The reputation that it will go bad and just stop working is true. But that doesn't mean there is never a subtle buildup to failure.

10 years is a lifetime for our cars. They were built designed and expected to last 10 years or 100k miles, before being replaced. Even though your mileage is a fraction of that number. 10 years of heat cycling up and down on the electronics takes a toll, regardless of mileage.

With all that said there is no guarantee that that is the problem. But it absolutely could be...

Was it the issue for the thread I previously posted... no. That was actually fuel related, cheap fuel was the culprit but that was a 1970 engine... Although I would not use regular gas on a 72 350 either.
Old Jun 19, 2025 | 07:44 PM
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Wow great stuff! Thanks for sharing this. Now I know what my next step is. I’ll let you know how I make out. Thanks
Old Jun 20, 2025 | 01:50 PM
  #7  
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If you are correct in saying nothing changes when you pull each plug wire one by one I think you may have another problem. Perhaps a vac leak, carb or fueling issue. I can give you lists of stuff to check but it would help to have a vid of it running.
Old Jun 22, 2025 | 09:56 AM
  #8  
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Thanks everyone for your help, after changing the module nothing changed. I decided to change one wire at a time using the old wires and come to find out the #5 wire was not seating properly, for some reason it would come loose. I squeezed it with the pliers went for a ride and it did it again. So I ordered a new set of Taylor wires. Maybe I damaged it when I originally put them on. But I want to thank you guys again for your support. Car guys are the best.
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