Looking for any advice as I have come to a dead end. Recently had my DPF cleaned as it was clogged. All fine except that it has been about 3 months now and I am still getting a lot of diesel soot around my bumper bar and the exhaust. Even after washing the soot is still there and I am having to polish it off after every wash. Also if I accelerate hard I get a large amount of black diesel smoke. Now I have had this car for 5 years now and it has never done this before. Any help or advice is greatly appreciated.