here's one for all you techies, i had/may still have got a prob with my 2004 2.2 dti, yesterday i travelled 2 miles to the depot where i work the car ran like a dream, i left it there for 5 hours and when i stated it up the spanner light came on, it was running very rough and coughing out plumes of white/blue smoke from the exhaust, it died so i restarted and the same again, it did this a few more times (each time it was in limp mode) until finally after some prety fancy dancing with the throttle pedal it cleared and drove home like there was nothing wrong until i got to the end of our close and it died again without warning the spanner light came on again, i coasted onto the drive, tried to start it and it fired up with no probs and no smoke. it has cut out on the odd occassion before but always re-started. this morning it started ok no smoke at all. checking it over all the vac pipes are in good order and the vac valve on the turbo working, the vac on the inlet manifold (the one that works the butterfly's in the manifold) and the one on the throttle body ok (tested by sucking on relavent pipes). took the egr off along with inlet manifold and butterfly rail as all were pretty gunged up, egr is free to move by hand, after a good clean up all re-assembled fuel bled started and took for a test drive and ok, now the questions, if you rev the engine slowly from 0-2500 revs there is a distinct engine tone change, is this normal? 2nd why do these engines get choked up so quickly? this one 55k, my fontera had same gunge at 70k.
any thoughts anyone?