Thread: ing coil
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Old 02-25-2026, 01:00 PM   #23
JayChicago
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Default Re: ing coil

Quote:
Originally Posted by hpk 53 View Post
Ing resiator # 2 instaled new resiator what is the coil volts is it 6v or lower .
If the engine happened to stop with points open, voltage at the coil will just be battery voltage, 6.0-6.5 volts. That tells you nothing. Bump the starter one time to get the points closed and take another reading.

The ignition resistor produces a 3 volt drop. So depending on your battery condition, you should measure voltage at the coil about 3.0-3.5 volt.

Later with engine running, points open 20% of the time, the averaged voltage at the coil will jump up to about 4 volts.

BTW, don't forget to turn-off the ignition switch after each test. While engine is stopped with points closed there is maximum current is flow. Can cook that little coil.
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