One of my friends left his car in the garage since five years back and he has lived abroad since then. He left it with a full tank(its a diesel), and it ran perfectly well back then. Now he's back and the car wouldn't start. The battery was left disconnected, and now he has replaced it with a new battery. The electric motor works, but the engine wouldn't start. Sorry, I don't know the model and make of the car.
So please help out. Thanks in advance.