Seems to be a common problem , I did post the same question (Engine thread).
My 2000 scenic has had a new head gasket, cam belt and is still misfiring, mechanic stripped the engine down again, still no luck. The diagnostic machine just registers an engine fault!!
Have now taken it to another mechanic who has also stripped the engine checked
, (changed points) had a diagnostic reading etc., if fact I have mentioned to the mechanic all the faults which have been posted on this forum,
, vacum hose etc., still no luck. Last resort they are going to put in a new variator (what ever that is? ) Has cost me a fortune so far. Can you tell I am female.........
This is my first renault - and I am afraid it will be the last....