Yesterday I had one of my regulars in: Ford Focus 1.8, one owner, yearly service. This year it was 10 years old (but only 63K) and the owner asked to have the cam belt done (as I had recommended last year) he also wanted the service done a month early as he had relatives coming to stay. I stripped it down, expecting that everything would look fine, but the tensioner roller had started to break up, a big split on each side with about half an inch in two places holding it together.
It could quite literally have gone at any moment, I was really pleased to have replaced it in time, it would have been so easy to say: "leave it for another year."
I had thought it was only the first year or two that had the dodgy tensioners, but this was a late 2002, so maybe there were still some early
1.8 lumps lying about?