PCV valves are on the rocker cover. You will either be able to pull it
out or unscrew it. I am unfamilliar with the car so I am not sure which it
Try pulling it off and blowing carby cleaner down the valve, they can
just become sticky, if it rattles when you shake it....Its probably working.
A PCV valve is just a ball bearing sitting in a tube which vents crank
case fumes and prevents backfires from entering.
You should be able to blow through from the rocker cover side out, but
not the other way. Make sure it is clean first though. :)