Hi please help got a a3 2.0 tdi bkd engine 140bhp cut a long story very short bought car had timing belt done then tensioner bolt snapped 2 weeks later so had a full head rebuild everything was back to normal but not for long, around month after blew turbo and hydrologic locked the engine as oil filled the cylinders up bought new turbo fitted it new oil ext but now got a missfire on cylinder 3 intermittent p0303 16687. First start of the morning it will run lumpy and smoke like the bores filled up with diesal over night but when warm car seems ok I've never had so many problems with a car could anyone help please