thanks cmia! any help would be gratefully appreciated The last pic, ***9, in the list has the top of the egr valve actuator visible. It's the pot with the black dot on it just above the green plastic trap in the picture. sorted it today. took the airbox off with the base to it and the tubing to the turbo. took the pipes off connected to the egr. took out the one nut at the bottom, the 2 nuts at the top and the electrical connector. gave it a real good clean as it was pretty coked up. once it was all back together again took it for a spin and its as smooth as a new motor now. real smooth aceleration, no smoke, no lag, nothing. just what i was hoping for so many thanks to all who have contributed, not only to this thread but the other threads that i have read regarding this problem. without this forum i would cetainly be a few hundred quid out of pocket going to a dealer. des