The PCV valve is located in the rocker cover on the passenger side of the engine.
Try e bay.
Hi, I have an 1988 Coupe Deville with same issue. Did you ever find out how?
1800oldjunk
HAYNES REPAIR MANUAL
See if your public library has a Chilton's book for your Cadillac.
You can find the PCV valve for your 1987 Nissan on top of the engine. The PCV valve will be near the air filter housing.
your local librarie should have a mechanics manuual that you can photo copy ! Good Luck !
http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c15280090549
The fuel pump is mounted on the side of the engine block near the front. Follow the fuel line from the carburetor and you will find it.
It should be in your Owner's Manual. I think it is on page 99 or 100. If you do not have the manual, you will need to either find an image of one online, purchase one online or find someone who has one that they can show to you, either online or offline. If you are still stuck with this, try the Cadillac Owner's Forum, there are many forum members there who own such cars (like me) that would be more than happy to host photos of the diagram for you.
Up your but and around the corner!
To put ac refridg in a 1995 Cadillac sedan simply open the hood, find the right valve and insert it.