Hi all, I have looked at various answers to similar questions all over internet, but still have no definitive answer.!
I have a 2006 (06) Focus TDCi 1.8 LX, I recently noticed when driving with my window open, a hissing noise at around 2000rpm+, which sounded OK!, but noticed it lost some grunt also that "Turbo kick" you get doesn't seem to be as "Hoomph" as before, Also some black smoke when under heavy acceleration, I had it mapped about 7 month ago from 115bph - 130bhp(ish).
All answers to questions I've seen point to EGR valve, or cracked intercooler pipe.
I am not that confident with bits I don't understand, could anyone point me in the direction of cleaning EGR with pic's is poss.

Thanks in advance

Mark