If you still have the plastic cover on top of the engine it's will say duratorque di but I'll assume it is missing.
On the di i think the injectors have a different setup from tdci, you could look on your logbook or Ford etis website for your engine type.
If it is running smooth on easy start i would assume the engine setup is ok but that leaves the fuel pump, you need to find out if you have the right fuel pressure at the injectors and the pump is timed ok.
Does it run only a short while i.e to burn off the easy start? Or longer?
If it doesn't even try to start off the fuel pump that's where i would focus, I'd also check everything else is ok like hoses etc.
I think only electronic fuel pumps have a shut off switch but double check this for yo)ur model (i'd say no)
Is the engine turning over quite fast when you turn the key?
I think it's a good sign it runs nice off easy start because that would suggest you don't have a duff engine