Have you got to the bottom of this problem? Mines doing the same, 2007 focus 1.8 tdci smoking and misfire from cold, the smoke is diesel smoke not oil. fitted new egr valve, injectors, filters, I'm now told it's the dual mass, but the pick up point for the crank sensor is on the back part of flywheel that's bolted to crank so in my mind that can't move? I'm a mechanic of 24 years and can't get my head around this one