my mom just smogged the car tonight and the technician told her the "gromit on the PCV valve was warn out, and if that breaks alot of bad things will happen". He also said this about the rubber boot on the valve cover breather. (I think its a breather it goes to the air intake). I checked with a flashlight at the boot on the PCV valve and didnt see any cracks. the one on the valve cover feels thin but no cracks. What in the heck is this guy talking about. And another thing whats the easiest way to get to the PCV valve on these things? looks like a major PITA. Thanks.