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10-26-2015, 07:13 AM | #1 |
Senior Member
Join Date: May 2013
Location: Dry Ridge, KY
Posts: 107
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No spark - coil voltage?
1939 Ford 6 volt. No spark. I have 6 volts going to the coil resistor and 2 volts going to the coil. What should I have coming out of the resistor? Could that be why it will not start?
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10-26-2015, 08:01 AM | #2 |
Senior Member
Join Date: May 2010
Location: Florida and Penna.
Posts: 4,471
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Re: No spark - coil voltage?
You should start with a fully charged battery, 6.4 The coil voltage
should be battery voltage with the points open and 3+ to 4.5 with the points closed. You can jog the starter to open and close points and tell by the voltage whether they are open or closed. If you have battery voltage at the battery side of the ignition switch and it drops at the switch side of the resistor you have a loose connection or dirty switch. It won't start with less than 3 volts at the coil. G.M.
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10-26-2015, 12:03 PM | #3 |
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Join Date: May 2013
Location: Dry Ridge, KY
Posts: 107
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Re: No spark - coil voltage?
Thanks G.M. Good information. I charged the battery and everything is OK.
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10-26-2015, 12:15 PM | #4 |
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Join Date: Jun 2010
Location: San Antonio, Texas
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Re: No spark - coil voltage?
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