Recently purchased 2010 Subaru Legacy 2.0d SE Nav Tourer. Only 2800 miles! Been off the road a while. Starts and drives but once warm it starts to shut down. No lights on dash. Possible cyl3 injector fault we have been told. Is the only way to change injectors to remove engine? Had oil change and fuel filter change prior to MOT. Based in N Ireland. County Down. Anyone local can help or advise?