Nissan Repair: oil pressure, oil pressure, 300zx

Question
I just got my first 300zx ive owned it for six weeks its a 1990 non turbo.the oil pressure at idle seems pretty high to me at about 50 psi with a rough idle due to a bad injector(600-700rpm) then drops to 30 psi after warming up...and when accelerating it reaches about 55-60 psi at 4000-4500 rpm then. Back down to 30 wen I decelerate.is that normal?if not what do you think is wrong?

Answer
Hi Jose -

It is normal for the oil pressure to vary in that range. However if it has a rough idle, that will need to be addressed.

have you tuned it up? If not, replace the plugs, wires, cap and rotor, and see how it runs.

Please get back to me -

aloha
calvin