PCV Valves
 

Hey folks, where are these damn things? Must be the most forgotten maint item on these great autos `cause I can't find `em. Help!

Here I come to save the day!!!!!
 

this should help. be careful with the passenger side...not much room there to work with. also try here for a more thorough explaination
http://www.ttzd.com/tech/pcvtech.html

Thanks a ton! Just changed the alternator and driveshaft on this beast, it looks like the PCVv's will be just as nasty.
Cheers

It is also a very good idea to purchase all new hoses to go along with your pcv change out. They are available from courtesy nissan. The old ones that you remove will be dried out and more than likely break on you as you try and remove them. Remember to save the old valves and clean them up for a possible future use.

Done, they were all tarred up and sticking. Seems to run better now. A big THANKS for all the info, made the job 10X easier.
Cheers