Re: Rough Idle
It IS possible you have a crook lead or plug.
IT does happen to new ones.
Put on a rubber glove and start removing and refitting plug leads one at a time with the car running.
If you remove it, and it runs worse then it isn't that one. It will be the one that makes no difference to the way it idles.
If they ALL make it worse, then it ain't plugs or leads.