babymog,

Ever hear of residual magnetism? That's the small amount of magnstism that remains after the electric current going thru an electromagnet is turned off.

If your theory was correct, an alternator would never work when a battery was dead. We all know that is not true.

Actually a gasoline engine starts easier with a roll start because the starter isn't causing a lower voltage to the coil so the spark is hotter.

P E H