While we were messing around with pulleys and engine bits, I decided to have a quick look at the cam belt. It had been changed just before we got the car, but it seems that due to a known design flaw with the way one of the pulleys works (I'm noticing a trend here), the belt had started to rub on a washer that was close to the belts route. This left a nice deep groove in the belt. Not ideal for a cam belt, especially in a car that is an "interference" engine (the valves open into the path of the pistons).
Cam belt failure is an instant engine death and rebuild time, so its out with the old and in with the new. More expense but thankfully half the work of getting to it had to be done to sort out the other pulleys.
Here you can see how the double-overhead camshaft actually works in practice. Lining up those pulleys is a bit of an art form apparently.
And now she's back up and running :)
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