My celica has gradually developed what sounds like a timing chain rattle when under load (almost sounds like a diesel) As far as i am aware it has a belt not a chain so does anyone have any ideas what it may be before i start taking things apart
It does, very occasionally, blow blue smoke if i sit idling for a while after a short run, just as it comes up to temp. It clears and doesnt return as soon as i set off again.