Hi I have an 03 130 tdci and has started to smoke on pull off until 2500 revs thick cloud then sometimes goes to grey, I have replaced the fuel filter and air filter and cleaned the egr and inlet manifold. and today had it plugged in to see if there are any fault codes and none at all showed so am stumped now what it could be I have seen some similar threads but can not get to the bottom of it so any suggestions would be great ...thanks steve