When and if the engine stops at the point where the starter gear is aligned with the missing teeth the starter will just spin and not start the engine. Over time even if the starter turns the engine over it will eventually ruin the starter. You need to replace the flywheel and the starter immediately.
It can cause a rough idle and random misfires because the engine will be off balance. If the flywheels happens to stop with the missing teeth (tooth) in the starting position, the the engine will not even crank.
This happens sometimes when there are teeth missing on the fly wheel
Teeth will be missing or other visual problem like missing weights, out of round, etc.
the starter bendix is bad or the flywheel it self has some teeth missing The Starter Bendix drive is not close enough to the flywheel. Reinstall the starter and check to see if there are shims that can be removed to place it closer.
A 1991 Honda Civic DX 1.5 liter engine starter might stick because the starter is damaged. The flywheel might be missing teeth which could cause the starter to stick.
you are probally missing teeth on the flywheel you should replace the flywheel.
the teeth on the flywheel will be missing or damaged when you rotate it around.
You can't just replace the teeth, you have to replace the whole flywheel
The flywheel can be cracked or the teeth on the flywheel can be broken or worn. Either of these conditions require the flywheel be replaced. I would also replace the starter when replacing the flywheel. This will prevent damage to the new flywheel from the worn teeth on the old starter.
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.
if the starter is spinning but not engaging then the bendix (starter teeth) is not moving out to grab the flywheel teeth or the flywheel has some broken teeth. The starter needs to be removed to see what the issue is.
Herbivores are sometimes missing the canine teeth.