Vehicle Not Working

My car 206rc yesterday we went to the guest house, I will return home, my car did not work in the morning I tried it worked
I wonder if these two three happen to me. Why is it so urgent help.

Battery new

If the battery is new, the starter motor, the coals and the gasoline pump to be looked at are sometimes an irrelevant place.

Can you explain exactly? Starting but not working?
let me explain according to my vehicle ..
Assuming that it is; If there is no fuel to the engine, the vehicle will not start. This may be due to the diesel escaping due to the air from the injector washers.
It was like me, injector washers changed, fuel recycling hoses changed, the problem disappeared.
It used to happen to me especially when I went uphill.

@ GökhaN my teacher made the necessary explanations.