What should my oil pressure gauge read at idle?
 

300zx TT is all stock. Does this look ok?


http://i16.photobucket.com/albums/b3...s/73a88a7c.jpg

the stock gauge is a piece of junk. Mine is off bid time. Put a aftermarket and see what you get.

That looks a bit low... how high does it get over 4500rpm?? it should be above 60psi during higher RPMs.... and at idle is should be around the middle between the zero and the first line. If it drives strong and its not knocking the it could be your oil pressure sending unit going out.

For idle, that looks about right. But without having linear values on the gauge, it's hard to know for sure. Idle pressure should be around 20-25psi.

the stock oil pressure gauge won't get you an good reading, better to get a autometer gauge and see from that. But the stock should be around what deatschwerks said

Is the engine hot or cold?

That looks alright for a fairly warm engine.

http://i39.photobucket.com/albums/e1...m/DSC01989.jpg
Normal