Quote:
Originally Posted by dielsalder
sometimes when I flip the ignition on, I read a full 8.5V!
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That will happen if the engine just happened to stop with the points open. While points are open there is no current, and therefore no voltage drop thru the resistor, so you will see full battery voltage at the coil. When that happens, just bump the starter to get the points closed.
I agree with the others, condenser is the likely suspect. But could be a bad coil, and these coils are known to be fragile. Both will often work fine when cold, but then fail when they warm up.
BTW, when working in the garage don't forget to turn off the ignition switch after each test. With engine stopped, ignition circuit is drawing its maximum current. Is hard on the coil. You want to minimize time switch is on with engine stopped.