Allrete..
Thought I'd post in case it may help.
I've a 2016 2.2tdci and man it smoked like a trooper,along with a little cough and a puff of smoke when cruising.
1000 miles in im thinking this things gota go. Its slow overweight. ' bit like me
So being a bit of stubborn boy I took it by the ford badge n shook it up abit..
Dpf check, "BLOCKED"
Clean dpf NICE JOB. Still chough n smoke.
Crankcase breather disconnected.
Still chough n smoke.
Turbo off stripped it down, carbon on exhaust turbine oil controll rings blued shift.
Replace turbo refit all.
No chough still a little smoke. Turbo off check all,
OK so let's blank n delete egr.
Turbo on refit all.
What a difference its a different animal..
Still a very little smoke every now and then
Again remove oil breather from inlet to turbo..
And ......
NO SMOKE NO HICKUP!!..
she pulls like a hot gym bunny in a all boys school at lights out..
Now to replace injector seals and rocker box to sort the crankcase pressure and oil separator.
So in conclusion..
Dpf blocked by oil contamination slowing the flow of exhaust gasses and eventually building back pressure forcing exhaust gasses past turbo oil controll rings into turbo oil gallery causing extra heat, causing shaft heat damage and causing oil to carbonise on the oil controll rings,
As the pressure builds the turbo drain gets overwhelmed by pressure and oil passes into the induction compressor side and forces oil into intercooler that stores oil until it gets hot enough to vaporise mix with induction charge and thus being forced into manifold to be burnt and sent out the exhaust manifold with some passing through egr and into exhaust where the dpf cathes the oil n gunk that blocks dpf and the whole process starts again!
Hope this may help somebody having trouble..