[Kurt in NJ]

That's why I like using the 110volt test light, usually the problem area will smoke and can be found, on starters it is usually fixable with cleaning and some insulating paper/ varnish

The bar to bar test shows weak solder joints, but like you said-- time, I usually resoldered all commutators when I was rebuilding quantities is starters/generator for resale, it was about as quick as checking/ testing