I've got the one with the connector... It's euro 4 but I think I don't have a DPF ... How good is a leak off test? A friend of mine said that it would not be very reliable... Still haven't had the time to clean that egr... I've got some decent contact cleaner so I'll give that connector a nice clean.
Just have these injectors checked. Much less trouble, trust me been there done that. And also you have EGR codes, and my question is that do you have the egr with a connector or without it. If with a connector then just try cleaning it with carburater cleaner but if u have the one without just buy a new one and try again it is quite cheap.
For TDCi Mondeos it is quite accurate.