Desperately need some help interpreting these Diagbox/Lexia live data graphs...Help!

[Mervyn44]

Hi everyone. I have a 2007 Citroen C4 Picasso 1.6 Hdi (110).

The car starts immediately every time and idles reliably but it is not smooth (you can feel slight vibration in the cabin and through the pedal). Upon pressing the pedal it hesitates and takes on a juddery "running on 3 cylinders" feel as it accellerates through the rev range until around 2500rpm, at which point it appears to sort itself out! When driving the roughness is less apparent but there is very low power until around 2500rpm when the turbo comes in... then it pulls like a train!

I have gathered lots of live data but am unsure how to read it, some of the values definitely look a bit suspicious to me (turbo position, EGR valve data (a new one was fitted shortly before I bought the car), injection main advance... and injector number 2 certainly can't be normal!).

Talking about injectors, the codes were all programmed to the wrong injectors when I checked them, suggesting someone had been swapping them round but hadn't updated the coding. I have now done this, it did seem to improve things slightly but the problem is still largely the same. I also swapped injectors 2 and 3 to rule out an actual injector fault but the weird injector value stays on cylinder 2!

There are no error codes being logged and no warning lights on the dash, the global test comes back clear... although communication errors are shown for various ECU'S, but I've no idea if this is significant/related.

I will post the global test report below. Many thanks for reading... car was bought for my terminally ill father and has now been off the road for 3 months... just can't afford to spend any more on it.

Any and all help enormously appreciated! Many thanks - Merv.