check the condition of the plugs, stick a picture up.
I would not be surprised these days if cully was on the right lines, though in my experience they tend to miss when cold due to coolsnt seeping into the cylinder at rest, if they are holding some compression the misfire can often clear as they warm up and burn off the coolant.
until its a proper loss of compression where the misfire is there all the time.
it could be as suggested also the plugs, if the map isnt great and theres too much fuel in certain areas and the tenp scaling is off they can foul up quickly, running a hotter standard 6 grade plug can alleviate this though your total advance figure may be too much if they have pushed it.
I would not be surprised these days if cully was on the right lines, though in my experience they tend to miss when cold due to coolsnt seeping into the cylinder at rest, if they are holding some compression the misfire can often clear as they warm up and burn off the coolant.
until its a proper loss of compression where the misfire is there all the time.
it could be as suggested also the plugs, if the map isnt great and theres too much fuel in certain areas and the tenp scaling is off they can foul up quickly, running a hotter standard 6 grade plug can alleviate this though your total advance figure may be too much if they have pushed it.
need a part number? http://public.servicebox.peugeot.com/ and http://service.citroen.com/ will sort you out.