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Old 04-23-2019, 10:27 AM   #1
37Flat
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Default Engine quit, won't restart

I just installed a new radiator with electric fans and a new alternator. Primed the carb and it fired up first try. It was running rough, so I shut it off and discovered Iíd loosened a couple of plug wires. Put them back on, started the engine and all was looking good - oil pressure 60#ís, alternator at 14v. Then it quit. The best I can get now is a quick cough when I try to start it. Havenít been able to get anything else since.

Any ideas? Iím out. Itís a í37 221.
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Old 04-23-2019, 10:32 AM   #2
TJ
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Default Re: Engine quit, won't restart

Coil or condenser? Not sure how you have it wired, but check the fuse(fuses)
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Old 04-23-2019, 10:51 AM   #3
Ken/Alabama
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Default Re: Engine quit, won't restart

If your running 12 volts then what distributor and coil you using??
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Old 04-23-2019, 12:52 PM   #4
37Flat
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Default Re: Engine quit, won't restart

It's 12 volts, crab distributor, Blue Streak FD471-X Coil from Mac's, resistor and condenser from NAPA, no fuses installed as of yet, just getting the engine together.
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Old 04-23-2019, 01:24 PM   #5
drolston
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Default Re: Engine quit, won't restart

Just to verify that it is an ignition problem, pull the coil wire from the crab distributor cap and crank with the ignition on. The coil wire should jump half an inch with a blue spark.

Weak spark, check 12 volts at the coil (assuming the 12 volt coil has built in resistor, and you have bypassed the resistor under the dash). If that is okay, the condenser would be the most likely suspect. Maybe the points were not tightened to the breaker plate. Check the points gap and contact surfaces clean and not pitted.

Are you using solid core or spiral wound spark plug and coil wires?
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Old 04-23-2019, 01:47 PM   #6
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Default Re: Engine quit, won't restart

Check the coil with an ohmmeter to determine in the winding went open. We don't buy from Mac's because of problems with ignition parts quality, primarily points. I understand the place has changed hands, so perhaps they have fixed the situation. It is important to know that the "crab" distributor rotor is special to that model. The correct crab rotor part# is 21A-12200 for the V8. Check the inside of the cap for damage if the wrong rotor was installed.
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Old 04-24-2019, 05:28 AM   #7
TomT/Williamsburg
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Default Re: Engine quit, won't restart

Bubba’s uses Bosch coils - I use the one without the built in ballast resistor and run the Chrysler ballast resistor. Works very well for my purposes ......
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Old 04-29-2019, 03:41 PM   #8
37Flat
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Default Re: Engine quit, won't restart

Was gone for a few days, but back in the shop today. The rotor is correct. The coil checks out ok, but the condenser is toast. Before installing the new one, I thought I should check the ballast resistor. Continuity checks out, but the voltage remains 12+ from side to side and from + side of 12 volt coil to ground. It is my understanding that the voltage should step down between 6-9 with a resistor. Would this be what fried the condenser? I'm using an FA54 condenser and an ICR11 resistor, both from NAPA. Thanks for all the help so far.
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Old 04-29-2019, 04:26 PM   #9
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Default Re: Engine quit, won't restart

Your voltage reading is going to depend on the points being open or closed. They have to be closed to get the correct reading.
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Old 04-29-2019, 11:40 PM   #10
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Default Re: Engine quit, won't restart

Sounds like an ignition issue. Not sure... coils can check out fine cold. Lot of things changed and going on. Running 12v on a stock ignition will break down. 4v at a stock coil/crab.

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Old 04-30-2019, 01:59 AM   #11
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Default Re: Engine quit, won't restart

Chris, You are just 30 miles from San Antonio's Southern Texas Regional Group 71 of the EFV8CA.
Lots of help there, lots of friends also!
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Old 04-30-2019, 08:57 AM   #12
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Default Re: Engine quit, won't restart

With a "can" coil voltage should be around 7v with a 1.5 ohm coil and a 1.5 ohm ballast resistor. That's at the coil with the points closed.
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Old 05-08-2019, 04:06 PM   #13
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Default Re: Engine quit, won't restart

Just to update - checked the coil, it's ok, replaced the condenser, still no spark at the plugs. Discovered one of the points wasn't firing. Cleaned it, re-gapped it, put it back together and it fired right up. running smooth. Is there another type of points (NAPA)or are the ones from the antique parts places the only option for a 12 volt system? Thought a spare set might be good to have.
Thanks to everyone for all the advice. Learned a lot.
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Old 05-08-2019, 04:21 PM   #14
alanwoodieman
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Default Re: Engine quit, won't restart

you can get them from NAPA, I do from my local store
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Old 05-08-2019, 04:48 PM   #15
37Flat
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Default Re: Engine quit, won't restart

Quote:
Originally Posted by alanwoodieman View Post
you can get them from NAPA, I do from my local store
Great! Wouldn't happen to have their part number would you? A lot of young guys at my store that are very well versed at newer stuff, but get a look of shock on their face when I tell them what I'm working on. If not, no problem. Thanks.
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Old 05-08-2019, 05:08 PM   #16
drolston
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Default Re: Engine quit, won't restart

Yep, a bad condenser will fry the points pretty quick.
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Old 05-08-2019, 05:36 PM   #17
cmbrucew
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Default Re: Engine quit, won't restart

1937 to 1941 all used CS 47 points and FA49 condenser. Echlin brand at NAPA


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Old 05-08-2019, 05:43 PM   #18
37Flat
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Default Re: Engine quit, won't restart

Quote:
Originally Posted by cmbrucew View Post
1937 to 1941 all used CS 47 points and FA49 condenser. Echlin brand at NAPA


Bruce
I'm running the crab style 1942-1944. Someone here said to run FA54 condenser, but I don't know NAPA's # for points. Same as '37-'41?
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Old 05-09-2019, 07:29 AM   #19
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Default Re: Engine quit, won't restart

Quote:
Originally Posted by 37Flat View Post
I'm running the crab style 1942-1944. Someone here said to run FA54 condenser, but I don't know NAPA's # for points. Same as '37-'41?
points will be the same.
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Old 05-09-2019, 08:10 AM   #20
corvette8n
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Default Re: Engine quit, won't restart

Get yourself a Condensor from Tubman
https://www.fordbarn.com/forum/member.php?u=36688
Just pm him, well worth the money even if you keep it as a spare.
I put one on my '41
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