2005 CDTI 150
Had a problem for the last few months but now it's getting worse, initially I used to just get a hesitation for a few miles under light throttle when the car is restarted from warm, i.e. stopped to fill up.
Now when the car is restarted it starts fine, and idles OK, maybe a little rough but as soon as I touch the throttle it starts to run really rough and not rev above 1400 rpm, even with the throttle fully down, it also seems to smell very fumey and smoke. when it's doing this it doesn't even have enough power to pull away! eventually it will start to smooth out then once the turbo starts to spin (around 2000 rpm) it will then be back to normal, but still hesitate when applying light throttle.
I have no spanner or fault codes stored, I took apart the EGR and cleaned it, checked it for operation and it opens & closes fine, I also cleaned out the throttle housing (not sure if it should be called that! had a butterfly driven by a servo) this was completely sooted up and the butterfly was physically sticking shut but this hasn't sorted the problem.
Strange thing is that when started from cold it's fine, and as long as the car isn't stopped and restarted it drives perfect.
Anybody have any ideas?