Hi there, I wonder if anyone can help? I have a Focus Estate 1.8TDCI, have had it for about 3 months, was an ex company car with full service history and was well mantained. Car is 5 years old and has done about 92k miles. Recently it has been feeling sluggish and is very slow off the mark, and needs a good bit of revving to stop it from stalling whilst taking off from standstill. When accelerating through the gears it sounds like there is a lot of air escaping from somewhere under the bonnet but can't tell from where exactly. When driving the car you can just feel that there is no 'poke' there! The car is struggling to start when cold and I noticed this morning that some rather dark smoke is coming from the exhaust when accelerating or revving. Has anybody had this problem with their Focus before? Any help/advice would be hugely appreciated.