The 2002 2.5 CRD (like I have) definitely has a lift pump...I am sure the 2003 also has one
TonyCRD on this Forum should be able to clarify this for you
Probably air in the system as stated before.
Also, is the dealer you are using the McCarthy dealership near the Fountains in Pretoria?
I used them when I was working in that area five years ago and found them to be pretty good then.
Also, have you checked the "CRD Love the Torque" Forum just below....this is the best place to post questions regarding CRDS!