Leaderboard

Yep stuck EGR = too much exhaust recirc through engine = lots of smoke = big black smoke if gunned on set off Difficult to see when driving but easy when sat idle, You've blanked it before what do you have to lose as an experiment!! Just because the egr valve has been changed doesn't mean it can't soot up and stick. Generally injectors would mean various characteristics - difficulty starting, poor fuel economy, overfueling at various parameters giving engine management light, amongst many others as you infer, but you say it drives great.

blank egr off and see if it gets any better