hi guys/gals i have a question which may make me sound a bit clueless but hey if it results in my car being fixed what the hell. im having problems with my astra sport mk4 i.6i 16v.it seems to me that is miss firing i have changed the spark plugs and that helped a little but i think the leads need to be changed too but havent got a clue how to do it as they seem to be in a box????
anybody no how to do it??
thanks in advance guys/gals