Where is the PCV valce at?

 

There is one on the passengerside near the battery, kinda tucked down by the valve cover.Can get it if you remove the battery. The other is in the same place on the driverside but it's a bitch to get to. Replace the hoses whe you replace the valves. They're much easier to put back with new hoses. Then you can just cut off the old ones.

'91 300ZX NA 2+2