hi all hippo has been to two garages now one didnt have a clue the other said possible turbo fault the symptoms are a metallic rattling sound (sounds like a machine gun) and loads of black smoke but only under load i e overtakeing ease off the go peddle no more noise and no smoke there are no fault codes any of you wise men got any ideas before i go to the expence of a turbo car has done 209000 miles so i suppose its possible many thanks