Ignition is required for an engine to work. Failure of ignition would prevent the engine working.
Could be, A very high mileage/worn out engine, The PCV system not in working order,
Could be the alternator has failed.
No, but something that could cause uneven idle could cause the check engine light to turn on.No, but something that could cause uneven idle could cause the check engine light to turn on.
As the engine revolutions increase, so does the noise from the engine as it is working harder as opposed to being still idling. Also, could be a leak in your exhaust system that could be the cause of the additional noise.
I had the same issue with my Pontiac Montana. One of the spark plug wires had cracked and water was causing the issues. I replaced the plug wires and the problem was solved.
All of these parts run on electricity, and for all of them to fail would be bad. Bad or burnt wiring could cause them not to work, or a alternator going bad could cause them not to work as well.
If you could tell us what a two wheeler engine is then we could help.
Yes, just about any sensor on the engine could cause a no start.Yes, just about any sensor on the engine could cause a no start.
If the engine fan is working then you could have a defective thermostat or a blown head gasket.
A vacuum leak could cause that.
Sounds like your engine thermostat for the cooling system isn't opening , if your coolant level and oil levels are fine , and your water pump is working