My 97 plate megane 1.6, started running rough recently, turned out to be one of the two
packs. My friend managed to get me a used one which i fitted and the car is working well now. he then tells me they are handed. i.e one has a black plug and one has a white plug, otherwise they are identical.
Like ive said the car is running fine now, but the haynes manual said not to mix them up and the plugs arent differentcolours for nothing for nothing, does anyone know why they are 'handed'?