I spoke to someone who works at a ford garage today and he said theyve had the same problem once it turned out to be a valve spring. So i guess its cam covers of time to have a look hohum what joys its a head of time.
I hope someone can help whilst i still have a bit of hair left. My 98 2.3 for some reason started to misfire as i pulled away the other day i changed the plugs (they were worn) then i got a set of coils (