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Discussion Topic:
No spark
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Catfish Jones |
03-13-2024 @ 6:48 PM
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Member
Posts: 37
Joined: Feb 2023
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Good evening all This concerns an all original 1938 Ford four door deluxe with original motor. I had Mr Charlie Schwendler rebuild my distributor, carburetor and fuel pump. He also helped me get a rebuild able coil rewound. He was awesome helping me getting everything rebuilt. Once all parts were installed it ran perfect. Recently it has sat for about 6 weeks with no starts. It now has no spark. Any ideas??
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trjford8 |
03-14-2024 @ 7:51 AM
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Senior
Posts: 4215
Joined: Oct 2009
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Have you checked your battery to see if it is putting out a full 6 volts? did you check for a loose wire to the distributor? did you check to see if the ignition/coil resistor is working properly?
This message was edited by trjford8 on 3-14-24 @ 7:53 AM
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JayChicago |
03-14-2024 @ 8:53 AM
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Member
Posts: 481
Joined: Jan 2016
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To check the ignition/coil resistor: Measure voltage being delivered to the coil, on the post that has the incoming wire attached. Set up your voltmeter, black probe to coil and red to the block, then turn-on the ignition switch and read voltage. Then turn-off switch right away. (maximum current flowing while engine stopped, is hard on the coil) With a fully charged battery, voltage to the coil should be about 3.5 volts. If reading 6 volts, the engine happened to stop with points open, so is just reading battery voltage. Bump the starter one time to get points closed, then take the reading.
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carcrazy |
03-14-2024 @ 8:40 PM
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Senior
Posts: 1659
Joined: Oct 2009
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It could just be that one of the connections in the primary ignition circuit has come loose.
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Catfish Jones |
03-15-2024 @ 6:44 AM
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Member
Posts: 37
Joined: Feb 2023
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Thanks for all of the info guys! I’ll check these recommendations my next day off.
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Catfish Jones |
03-16-2024 @ 10:31 AM
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Member
Posts: 37
Joined: Feb 2023
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Good afternoon all. It was the ignition resistor burnt open. Does anyone have a recommendation for a quality USA made replacement? This is for an all original 1938 Fordor Deluxe Ford. Thanks
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carcrazy |
03-16-2024 @ 12:41 PM
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Senior
Posts: 1659
Joined: Oct 2009
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Dennis Carpenter has this one in stock that may work for you. https://www.dennis-carpenter.com/trucks/engine/ignition-amp-timing/18-12250-ignition-coil-resistor-origin
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1942deluxe |
03-16-2024 @ 1:23 PM
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Member
Posts: 96
Joined: Oct 2009
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Third Gen in TN. also has them and are made in the USA, Carpenters may be also.
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Catfish Jones |
03-17-2024 @ 7:29 AM
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Member
Posts: 37
Joined: Feb 2023
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Thanks very much!
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40 Coupe |
03-17-2024 @ 9:00 AM
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Senior
Posts: 1676
Joined: Oct 2009
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The resistor does get very hot but unusual to see one burned in half. Suggest you check the resistance of the ignition circuit to see if there is a short in the circuit before burning another resistor. The ignition circuit does not have a fuse.
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