Tinkerer
Senior Member
A starting motor stuck engaged to the flywheel can create a big spike in current in the circuit. It essentially becomes a generator. IMHO.
Possible the engine is partially seized and turning hard, something is dragging voltage at starter turning????Now that's a good number, how about the battery terminals while cranking? if it's the same 6-8V, then you either have a weak battery, bad starter, or a load on the engine.