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EFV-8 Club Forum / General Ford Discussion / Plug wire schematic

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Joes35

05-28-2022 @ 11:14 AM

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Hello everyone! I'm new to the forum and working on a 35 Roadster, it has what I can figure is an engine out of a 41. The question is I can't seem to find a good schematic on what order the plug wires go on the "helmet style" distributor. Any help on this would be appreciated.

This message was edited by Joes35 on 5-28-22 @ 11:45 AM

carcrazy

05-28-2022 @ 4:35 PM

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Here is how to wire up the 1937 to 1941 Ford distributor from the Van Pelt website:

http://www.vanpeltsales.com/FH_web/FH_images/FH_engine-pics/Flathead_Distrbtr-wiring-1937-41.jpg

Joes35

05-28-2022 @ 5:30 PM

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Ok thanks.

This message was edited by Joes35 on 5-28-22 @ 5:31 PM

Joes35

05-28-2022 @ 6:23 PM

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So I have spark in the correct order, low but enought compression, put fuel directly in carb and I cannot get this thing to fire!! I also checked the ballast resistor and correct voltage is present. Had distributor tuned and all is good there. Any other pointers? Thanks

carcrazy

05-28-2022 @ 10:30 PM

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Spray some starter fluid into the carburetor to see if you can get the engine to try to start.
If the engine still does not even try to fire any of the spark plugs, there is no spark.
Replace all of the spark plugs with new properly adjusted plugs and the engine should fire right up and run.

40 Coupe

05-29-2022 @ 4:45 AM

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It is possible the ignition coil or the condenser is bad if there is no spark at the plugs.

37RAGTOPMAN

05-29-2022 @ 5:39 AM

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looking at what you are working with,
I would make sure the valves are working and not sticking,
is there any backfire out the carb or out the exhaust,
was the coil rebuilt ? or a used coil, make sure you have a good one,
I would also check if mice built a nest in the exhaust system. clogging the exhaust system
you might laugh but I see it done,
you say you have elect to the coil terminal, and checked the voltage, should be 3-4 volts,
you can go directly from the battery to the coil, using 6 volts,
but ONLY for a short time,
hope this helps, 37Ragtopman,Maine

Joes35

05-29-2022 @ 7:32 AM

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So yes I have sprayed starting fluid even directly in plug holes just to see if it would pop. The first time it faintly did but nothing since. I have considered something either stuck in the intake or the exhaust I will look into that today. Also the distributor was sent to the "flathead doctor" in Portland and said coil was strong and bolt it on and go. New wires, new plugs gapped at .030 and physical spark at each plug around the compression stroke (thumb over plug hole test). Thanks for the guidance!

carcrazy

05-29-2022 @ 9:52 AM

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There is a brush mounted in the bottom of the coil that makes contact with the distributor rotor. If this brush is missing, excessively worn or stuck in a retracted position, the ignition circuit will not be complete and there will be no spark.

You can verify that this brush is present and making contact by removing one of the distributor cap assemblies (inner and outer caps) from the side of the distributor and looking inside with the aid of a light and a mirror.

If your brush or spring is damaged or missing, you can purchase a new Ignition Coil Contact Brush (P.N. 68-12010-S for 1936-41 - brush & spring) from Yesteryear Ford Parts.

carcrazy

05-29-2022 @ 4:16 PM

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Check to see if your distributor rotor rotates when you crank the engine. Judging by the markings on your cylinder head, you have a 1946 to 1948 Flathead V-8 engine. You have a 1937 to 1941 distributor on the engine. If this is the case and the parts inside the engine are stock, you will have to use a distributor to camshaft spacer ("cam button spacer") to allow the camshaft to drive the rotor. The required item is available from several sources, two of them are: MAC's Antique Auto Parts under P.N. 11A-6280 and Speedway Motors under P.N. 910-12710.

This adapter takes up the space between the front of the camshaft and the rear of the distributor, it is required to mount a 1932-41 distributor on a 1942-48 Flathead V-8.

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