Possibly there is not enough current in the battery to make this happen or your starter motor is shot.
Perhaps you might mean that it doesn't start. Not turning over is not the same as not starting.
No, a rusted flywheel will not cause the engine not to turn over.
A bad flywheel can definitely cause the engine not to turn over. The flywheel has teeth. If the teeth are chipped or broken, then the starter can not engage to spin the engine over.
A bad cam or crank sensor can cause a no start, but the engine will still crank or turn over.
No, a rusted harmonic balancer will not prevent the engine from turning over.
It can.
Check for spark at the plugs. Check for fuel to the engine.
dead battery, flooded engine, could be any number of things.
The starter is burning.
yes you can you have to use a socket on the crankshaft bolt and turn in the dirtection of the engine would run in
Engine timing is VERY retarded. My first guess: the distributor clamp has loosened.
Dead battery, bad starter, or defective ignition switch.
The Engine can turn over with out gas. The started is engaged and turn the crankshaft, just as one would turn the engine over by hand. For sustained revolutions however, gas is needed to react in the engine chambers