At the end of last season I was riding my motorcycle when suddenly the motor turned off. It was a harsh stop, not dying slowly like when there is no fuel left. Also just the engine stopped quietly, so I assume the cylinder didn't break down (it happened before on another motorcycle and there was a loud bang when it stopped -> piston seizure).
When I try starting it, the electronic starter is turning but the engine won't start at all. Push starting also doesn't work. Also while starting, "air" (I don't know how to check if the fuel actually gets burned) gets pushed out of the exhaust system. So I assume there is enough compression. Haven't checked it though.
The bike is a Yamaha WR125R 2013 Model.
What I already checked:
- Spark plugs are sparking
- Fuel is getting injected
- tried a new CDI
- push starting doesn't work either
- battery is full
I didn't want to remove the motor before I can be sure that the motor is the cause. I assume it's just a minor problem that I somehow don't see.
Maybe someone has an idea how I can start enjoying the nice weather in germany :D