Piece of crud is now undergoing interrogation, i expect it to get a long sentence. Drove the car this afternoon all ok now, back to a smooth full power car. Fuel filters were replaced about a month ago but with all the recent work that the car has received i suppose a few teething problems are to be expected until all is run in all situations of speed and length of time and differing ambient temperatures. Before i knew about the IML and the IOC i would have been very very stressed had this problem occured, but now with all of you to fall back on for advice (especialy Dick Benjamin) and the website advice pages i understand the meaning of saying : - "a problem shared is a problem halved" Thanks Neil Thorpe smooooth black 82 Imp