This one is for my friend. So about a week ago, we changed the spark plugs on my friends 2006 Impala SS. We were able to get all of them changed, but during the process, the plastic PCV line that runs to the intake was snapped. So to fix it, we taped off the part not he intake so there isn't a vacuum leak, and we put a breather on the PCV. After all of this, his car is idling like it misfires. It will jump around and you can feel it. All the plugs and wires were changed, but it's not misfiring so it's not because of the spark plugs. So he's wondering if the PCV is the reason it's idling weird. Does that sound right? And what should he do to fix it?
Here's a vid he made of what's going on: https://www.youtube.com/watch?v=VjksMS-P6zI
