My oil pressure in my 78 doesnt start to register until I have been driving for a while. I am planning on trading the oil sending unit out with the one in my 81. I hava already changed the gauge with a known good one. Any other ideas would be appreciated.

 

280Z has different oil pressure sender than the ZX. Pull yours and clean it thoroughly on of chance it is partially plugged. If that doesn't work, buy a new one.

 

I am pulling out this weekend to clean it. That is if I am home.

 

I am pulling out this weekend to clean it. That is if I am home.