Guys, Been stuck on the side of the road this morning till AA arrived, lucky lloyds bank give me the top coverage. Taken it to garage AA man says problem with timing chain, I turned the engine off as soon as the noise started and luckily was only crawling. Has anybody else had this problem before ? I had a new tensioner put on abour 4 years ago. the engine has now done 130000, my question is: A. what may need replacing? any cost ideas ? and B. how much hassle would putting a 24 valve v6 engine in? Thanks All