Thanks for that. In the garage was another TD4 and I looked at the live data for that which showed from memory about 900mg/injection at 2500 rpm. This vehicle runs fine. The MAF was taken off that and put on the problem vehicle which then read the same as the original, ie 560mg/injection.
So are we saying that there is a fault with the EGR with the problem vehicle? I have been told the EGR has been reconnected and was operating correctly. I accepted that without checking myself.
Regards
Pete M