Just an update...
A major service has been done, including replacement of all filters(air, fuel, pollen, oil), engine oil and "flushing turbo" as well.
Everything on service report comes with no advisory. No errors code at all
My car still jerking sometime when driving.....it is like is not fueling properly or I feel is running in 3 pistons...not 4 ...
If I stop the engine for 15 min and after that I resume driving everything seems fine for a while... I don't get it
Maybe I didn't find the right engineer to check my engine properly.... I don't know.
I live in Kettering - Northans and if you can recommend me a skilled engineer to check my car I highly appreciate
Many thanks
PS Peugeot 5008, 1.6 hdi, 66k on clock - 11 plate
My experience of small diesel engines is that they are laggy and peaky. Are you sure this is not just an engine characteristic you are experiencing?
If you are sure there is an issue, as suggested, get it code read, see if a long term code is stored. Be mindful no code does not necessarily mean no issue, it's just that it is then not a BIG issue to be recognised by the ECU.
If code found, investigation direction can be taken.
If no code, it gets tricky. I would probably go to an independent garage, get them to specifically remove the EGR valve and give it a thorough clean with EGR valve de-coking compound. I would also remove the MAF sensor from the car, and give it a clean with brake cleaner or such like, and when thoroughly dry, put back in the vehicle. If using brake cleaner, make sure it's of the type that does not leave residue.
Finally as far as aspiration of the car is concerned, I would also check that the breather pipe is not blocked, cracked or loose, all the way from the crankcase entry point to the compressor entry point.
In terms of fuel system, I would run a can of good injection system cleaner through on a whole tank. I have had good experience with Normfest CT60 in the past on a number of cars, but there are others. Over those 500-600 miles while you are burning through that tank you should start experiencing gradual improvements if the issue is a partially blocked injector, but nothing can fix a breaking up injector if it is breaking up.
Finally, are you confident the car has not been power upgraded through a dodgy remap or some sort of resistor on the fuel pump loom??