My first post here, I've read many so hopefully I'll provide enough info.
My Mondeo is suffering from quite reduced power below 2000 revs and, when under load and accelerating hard, masses of black smoke. There also seems to be smaller amounts of black smoke just generally running. Everything seems fine with high revs and long drives on the motor seem economical enough. It only just got through the MOT back in Feb, the dude had issues with the emissions.
History, It's been serviced by ford for the first 10yrs of its life, the last 2 my a local garage before I bought it then by me. I had an issue a year or so ago where it was very juddery around 1750 rpm, that turned out to be the big pipe below the EGR valve. I replaced that with a fancy silicone one and it's been fine. It did just over 60k in the first 10yrs, about 30k in the last 3.
So far I've taken the EGR valve off and cleaned that, wasn't too mucky, I've checked the pipe I replaced and that seems fine. I've also had a look around the engine bay, from above, to see if I can see any signs of dirt that could be from another split somewhere but can't see anything.
Recently, I've just done the service and replaced all filters, even though they have only just been replaced, in a bid to rule out.
There is also a slight high pitched noise, almost a whistle on acceleration, doesn't matter the starting revs, more noticeable when stationary but not too obvious.
I've read as many posts as I can and can't seem to find anything other than the pipe that I've already replaced and possibly drilling a hole in the turbo housing to spray Mr Muscle in there to clear the veins off - I've not done that yet as I'm contemplating taking it to Ford to ask them to diagnose and didn't want to confuse things.
Any help will be greatly appreciated!