Maybe, but then it gets back to the correct position? It's fairly difficult to reproduce and it lasts only a few mins, but could try to check visually maybe?steve_earwig wrote:I was thinking sticking open after being fed highest pressure. Perhaps a leak off test while it is misbehaving?
Have a run with the engine cover off, then stop and look, could I see something (if I can successefully focus something with all the rattle)?
Hoestly it doesnt seem to be an injector to me, but I cannot make my head around of another possible cause.

Fuel filter - nay
EGR? Don't see why, even if the dealer last time told me it was rattling a bit more than normal, but not to worry about it
lift pump - just replaced
something to do with the air intake?
A vacuum valve remaining closed / open after being kept strongly so for a while by the acceleration? That should cause simply non working turbo and I should hear the turbo noise being wrong.
All assumptions here, I am honestly young and unexperienced so you're probably right thinking about the injector. May get one from Ade to check, but they are a bitch to remove and I need the car every day.