Originally Posted by
rejexx
Thanks for this Dan. Are we talking Injection System problems (ie expensive ones) or niggles? From what I understood from the local Diesel Specialist, the Mk 4 2.0 TDCi, has the same crappy Delphi system fitted to it, that the Mk 3 had, whereas the 1.8 has a newer system. Mind you it's quite possible that he is talking crap.
What kind of specialist is he, as he's certainly not a diesel specialist! There's not a single shared component. The Mk4s have a Siemens system which massively better than the Delphi set up.
The 1.8s seem to suffer more from fuelling issues leading to cutting out, poor performance and poor economy. A quick look over on TalkFord and you'll see more 1.8 issues than 2.0 problems. Non are anywhere near the magnitude of the Mk3 faults though!