I was looking for an answer to this question myself, and found it answered at: talkaboutautos.com
pcv valve on nissan altima 2005
YES
I had the same question. Seems it does not have a PCV valve.
There isn't one.
== Answer The PCV valve on a 1993 Nissan Altima is located under the intake manifold just above the oil filter. You have easier access if the oil filter is removed. Not so easy...
AnswerIt doesn't have a PCV valve.Actually it does. The PCV valve for a 1993 Nissan Altima is located behind the engine below the intake. Buy a Haynes manual, the PCV is VERY tough to get too but it can be done. You can only get two bolts from the top but have to go from underneath the car to detach the hose.
The PCV valve is located in the rear valve cover,just behind the throttle body
The PCV valve on a 2000 Nissan Frontier 2.4 is on the top back part of the engine. It is attached to the intake manifold via a hose.
the pcv valve on most cars is usually located on the valve cover, and usually has a plastic or rubber hose that leads to your air intake hose. hope that helps
The PCV is located on the drive belt side of your vehicle ( the front passanger side ) near the intake manifold. This part is very difficult to remove; it is attached to a breathing device.
AnswerThere isn't one. On the top of the head in the rear, there is a tube that runs to the breather. That is the straight ventilation. No PCV needed.
The PCV (Positive Crankcase Ventilation) valve on a 2008 Nissan Altima coupe is typically located on the engine's valve cover. To access it, you may need to remove the engine cover for better visibility. The valve is connected to a hose that routes back to the intake manifold. Make sure to check your vehicle's service manual for specific details and diagrams.