Hi
I am posting this on behalf of my son.
He has a 2004 ST Tdci, car currently has 152k on the clock but has a massive service history, very well looked after etc.

He was out the other day and put his foot down in third gear and the car started pulling back. He then put it in fourth to see if it was the same and the car lost all power so he turned it off then back on and was fine.
It is still running fine now until he gets over 3500 revs and it judders. The glow plug light is flashing also.

He has had it on the computer and the code P1211 & P0251 have came back which leads us to believe it is likely the injectors. He has been offered a full set of a 69k ST for £350.

I am posting this hoping for some help.
Do you think it is definitely the injectors?
How much would he be looking at for a garage to fit and code the injectors?
Is it still OK to drive as long as he takes it steady, It drives fine otherwise.

Thanks