2006 Vauxhall Vectra 1.9 CDTI (120BHP) Losing water/Coolant

[Longitudinal4Cylinder]

I have an 2006 Vauxhall Vectra 1.9 CDTI 120 BHP and it is losing water. There are no leaks and the headgasket is good as it doesn't heat up or smoke out of the exhaust. Please help

[Longitudinal4Cylinder]

Right, the car won't start and it had coolant/oil/fuel all in it. I'm guessing fuel isn't getting into the Combustion chambers because when you push start it and press the throttle nothing happens to the RPMs so I'm guessing it's something to do with that. Anyway my dad is scrapping the car because he's an tt and the coolant is no longer leaking by the way.