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Old Feb 6, 2023 | 11:06 AM
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Default Ignition issue

After having the distributor and carb rebuilt, the car retuned...to the tune of $4,800, I've put on about 75 miles. Part of the work was swapping out the points/condenser with Pertronix module and coil. I took the wife out for a Sunday cruise. A mile from home the engine back fired, became unresponsive to the throttle, then died. I knew something was wrong prior when there was an unreliable idle- ok at times at 550 rpm on the dash, other times it would stall. Running thru the gears at higher rpms, it ran well. At stop lights, it would exhibit the erratic idle I mentioned. But it finally just stopped running and we had to push it off the road and call for assistance. It cranks over strong, gets fuel to the carb. It looks like an ignition issue. Back in my garage I I tested the battery at 12.7 V. I pulled #1 plug and got spark but it appeared more yellow than purple. I tested voltage to the coil at 10.7V. That's as far as I've gotten with testing as I'm not sure where to look next. Any thoughts are appreciated. Thanks.
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Old Feb 6, 2023 | 11:15 AM
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Got to be that Pertronix. Call the guy that did the work and insist they come out and fix it. I would go back to points but that's up to you.
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Old Feb 6, 2023 | 11:25 AM
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Absolutely go back to points and condenser
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Old Feb 6, 2023 | 11:31 AM
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Originally Posted by 2KREDVert
Got to be that Pertronix. Call the guy that did the work and insist they come out and fix it. I would go back to points but that's up to you.
I called him first thing this AM and left a message with his office guy. Still waiting for a response. I thought Pertronix was the way to go over P/C.
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Old Feb 6, 2023 | 11:32 AM
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Originally Posted by 2KREDVert
Got to be that Pertronix. Call the guy that did the work and insist they come out and fix it. I would go back to points but that's up to you.
^^^^THIS^^^^ If the fellow is at all reputable (and for $4800, he darned well had better be), he'll make it right.
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Old Feb 6, 2023 | 11:57 AM
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Pertronix should be wired to get full battery V at the coil. Need to bypass the ballast resistor.

Possibly the issue here.
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Old Feb 6, 2023 | 12:03 PM
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Originally Posted by Vega$Vette
Pertronix should be wired to get full battery V at the coil. Need to bypass the ballast resistor.

Possibly the issue here.
how did it get to 75 miles then.
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Old Feb 6, 2023 | 12:07 PM
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Originally Posted by Nowhere Man
how did it get to 75 miles then.
Just saying something to check.

Usually if modules go out they are out. could be a loose wire or any number of things.

Last edited by Vega$Vette; Feb 7, 2023 at 01:16 PM.
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Old Feb 6, 2023 | 12:34 PM
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Originally Posted by Nowhere Man
how did it get to 75 miles then.
Fair enough question. Something took a ****.
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Old Feb 6, 2023 | 12:39 PM
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Originally Posted by Spike66
Fair enough question. Something took a ****.
I had a SBC with similar issue a while back. Turned out the distributor was loose and had rotated.
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Old Feb 6, 2023 | 12:52 PM
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Please tell me that the 4800 was for more than a carb rebuild and a distributor rebuild, I installed a pertronix 3 with the matching coil, 8 years ago and have not had an issue, that’s not to say I will never have one, points and condenser work well, it’s your choice, check to see if he installed the Petronix with the ballast resistor intact ,
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Old Feb 6, 2023 | 03:53 PM
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Originally Posted by Gavin65
Please tell me that the 4800 was for more than a carb rebuild and a distributor rebuild, I installed a pertronix 3 with the matching coil, 8 years ago and have not had an issue, that’s not to say I will never have one, points and condenser work well, it’s your choice, check to see if he installed the Petronix with the ballast resistor intact ,
I wish I could. The whole experience with this shop is a clusterf*ck.
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Old Feb 6, 2023 | 04:27 PM
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Default Carb & Distributor

$ 4800.00 ????
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Old Feb 6, 2023 | 04:34 PM
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I read a few times that the Pertronix coils fail often. Do you have the original point coil handy, maybe put that in to see if it starts. No need to put it in the bracket, it does not need to be grounded.
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Old Feb 6, 2023 | 04:40 PM
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Originally Posted by plaidside
I read a few times that the Pertronix coils fail often. Do you have the original point coil handy, maybe put that in to see if it starts. No need to put it in the bracket, it does not need to be grounded.
I might have an old coil in the parts shelf. If I do, I'll try that. Thanks.
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Old Feb 6, 2023 | 07:15 PM
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Originally Posted by globeguy
$ 4800.00 ????
Yeah...it's painful to see it in print....even when it ran.
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Old Feb 7, 2023 | 12:23 PM
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I could see spending up to a grand on an original carb rebuild with it being colorized, and you could have bought an MSD tach drive full electronic small cap distributor for 500.00 it fits under the shielding. Add in installation and your no where near 4800 , what is his shop hourly e
rate 500 an hour?
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Old Feb 7, 2023 | 01:32 PM
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Originally Posted by Gavin65
I could see spending up to a grand on an original carb rebuild with it being colorized, and you could have bought an MSD tach drive full electronic small cap distributor for 500.00 it fits under the shielding. Add in installation and your no where near 4800 , what is his shop hourly e
rate 500 an hour?
I could go on about this guy, and I might in the proper venue, but I was between a rock and a hard place and he knew it. I had been unable to get the car running on my own due to a bunch of things not the least of which was some serious surgery I was scheduled for. I've owned this car for 35 years and always wrenched on it myself. But age catches up and things change. I had to get it running in the just in case it needed to be sold. I was over a barrel without vaseline. To his credit he got it running...for about 75 miles. The purpose of this thread is not about venting my spleen. I won't put the car back there again. I've no confidence in his business model. If he wants to come to my house and look at it himself, I'd welcome that. As yet there's been no offer. I'm looking for troubleshooting tips so I can get this running. To an earlier suggestion: I thought I had a spare coil. Turns out I don't. How can I test the Pertronix coil in there for functionality? As I said in my first post, there's about a 2V difference from battery reading and coil. I'm not sure what that may indicate. Thanks.
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Old Feb 7, 2023 | 01:58 PM
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Originally Posted by Spike66
I could go on about this guy, and I might in the proper venue, but I was between a rock and a hard place and he knew it. I had been unable to get the car running on my own due to a bunch of things not the least of which was some serious surgery I was scheduled for. I've owned this car for 35 years and always wrenched on it myself. But age catches up and things change. I had to get it running in the just in case it needed to be sold. I was over a barrel without vaseline. To his credit he got it running...for about 75 miles. The purpose of this thread is not about venting my spleen. I won't put the car back there again. I've no confidence in his business model. If he wants to come to my house and look at it himself, I'd welcome that. As yet there's been no offer. I'm looking for troubleshooting tips so I can get this running. To an earlier suggestion: I thought I had a spare coil. Turns out I don't. How can I test the Pertronix coil in there for functionality? As I said in my first post, there's about a 2V difference from battery reading and coil. I'm not sure what that may indicate. Thanks.
I understand, go pick up a coil and a set of points, check to see if the ballast resistor is still on the firewall, if it is and wired in I would tend to think that would be your issue, the resistor with Petronix ignition is a no no. If it’s not wired, re wire it and install the points and condenser along with the coil,
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Old Feb 7, 2023 | 03:00 PM
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Originally Posted by Spike66
I could go on about this guy, and I might in the proper venue, but I was between a rock and a hard place and he knew it. I had been unable to get the car running on my own due to a bunch of things not the least of which was some serious surgery I was scheduled for. I've owned this car for 35 years and always wrenched on it myself. But age catches up and things change. I had to get it running in the just in case it needed to be sold. I was over a barrel without vaseline. To his credit he got it running...for about 75 miles. The purpose of this thread is not about venting my spleen. I won't put the car back there again. I've no confidence in his business model. If he wants to come to my house and look at it himself, I'd welcome that. As yet there's been no offer. I'm looking for troubleshooting tips so I can get this running. To an earlier suggestion: I thought I had a spare coil. Turns out I don't. How can I test the Pertronix coil in there for functionality? As I said in my first post, there's about a 2V difference from battery reading and coil. I'm not sure what that may indicate. Thanks.
No reason to start swapping out parts when you don't know what's bad.

Simple tests - This will get you started

1st as I mentioned make sure the distributor is not loose. Make sure the wire from the Distributor to the Coil - is tight.

2nd The Pertronix is installed without the ignition wire going through the ballast resistor. Easy to see. If the red ignition wire is hooked to one end of the BR and the coil is hooked to the other end power to the coil is going through the BR. Coil+ should be full battery power.

3rd Test the coil with a multimeter

Last edited by Vega$Vette; Feb 7, 2023 at 03:14 PM.
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