No. It should only spark with the engine turning over.
No, a rusted harmonic balancer will not prevent the engine from turning over.
The VATS security system prevents the starter from turning and thus the engine from turning over. Also, the entire ignition system is not activated unless the proper VATS key is used.
If by turning over you mean the starter spinning the engine, no. If the engine is locked up (try turning it clockwise by the crank bolt), then you've either thrown a rod or broken a timing chain.
If the engine is "cranking" then it is "turning over". Please be more specific.
I'm confused, do you mean when you are going in reverse or turning the engine over in reverse direction?
If the engine will not turn over, that is, sound like it is turning, then the trouble is a dead battery or really bad battery clamps. If the engine will not 'catch' and start running, then there are a number of causes, one of which is having no fuel.
pull the spark plug out and start turning the engine over and watch the water fly!
If "crank over" means the starter is turning the engine over but the engine won't run, I would suspect fuel pump failure, not uncommon.
No fuel (out, or pump not pumping) or no spark (or really bad timing).
it stops you from getting to many r.p.ms turning your engine and over heating it.
I THINK U NEED TO REPLACE THE STARTER