[ericr]

I have read that the Model "A" engine always stops in one of two positions.

I always turn off the gas valve and let the engine die before shutting off the
ignition switch. I have noticed that if I fully retard the spark before turning the ignition off, the ammeter goes to zero but advancing the spark causes a negative reading on the ammeter....is that because the points are going from closed to open?

As a related question, what exactly happens if you let the engine die by lack of gas but forget to shut off the ignition switch? Does it burn out the condenser or
the coil or the points?