Scott sez:
Yes, the coil, being an inductor, would saturate. All of the current
flowing into it would get dissipated in the resistance of the primary.
Try this experiment: Turn the ignition on, after making sure that the
points are closed, but *don't start the engine.* After about an hour or
so, reach in and feel the coil. You will definitely find it warm, but it
should by no means be hot, at least not as hot as your description.
It sounds to me that, instead of a problem with the primary circuit, there
is an unusual load from somewhere on the secondary of the coil.
I wonder: Has anyone talked about whether the ballast resistor has been
bypassed? Wouldn't that over heat the coil?
-Bob T.
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