| bwhitworth | -- 06-09-2013 @ 4:41 PM |
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I purchased a modern style coil for my 40 Ford and an adaptor plate for the top of the distributor where the old coil sat. I got everything installed and tried to start the car, nothing. I checked the voltage with a multi-meter and had a reading of 3.05 volts at the coil. I rechecked the wiring for problems, none were found. I connected a hot wire from the battery (6.24 volts)to the coil and tried again. It started at the first touch of the starter. I pulled the hot wire off and it continued running. It will not start using the ignition wire with the 40 ohm resistor. What should the voltage be at the coil. There is a voltage drop between the battery and the ignition to about 5.3 volts. Thanks Bob
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| flathead48 | -- 06-09-2013 @ 5:35 PM |
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Could it be that the new coil has a internal resistor and you are cutting the voltage down double. Check what's coming out of coil or bypass your external resistor to see if it will start. Good luck
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| 42merc | -- 06-09-2013 @ 6:07 PM |
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Put a jumper wire across the original Ford resistor that is under the dash. The new coil does not require a resistor, it will function as designed on 6 volts.
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