Can anyone tell me if the passenger side valve cover with the oil filler cap on the 1994 300zx NA (not turbo) is
known to be a weak spot?
Mine cracked today just below the oil filler cap.  About a 3 or 4 inch long crack about 1/8 inch wide.
Now oil spews out on the hood underside, ...

Problem:  My wife's '86 NA has the Automatic Climate Control, the
digital one with the buttons.  The "ambient temperature" is reading 23
degrees low.
I did the trouble shoot from the book, voltages at the dash unit are

ouch!  must get this fix before the track day.
Looks like oil from tranny. Oil seal from driveshaft?  is it hard to
replace? exhaust has to come out?
Do I need a special tool to press theseal back in?  any tips to install the

My husband replaced the radiator on his 1990 Nissan 300zx (Fair Lady,
non-turbo, automatic). While working on the car he decided to change
the thermostat and removed the fan shroud, fan and several wiring
harnesses. Pending inclement weather forced him to abandon changing the

    I have an 89 300 non turbo NA car that
is giving me a headache. Starts fine, but when
put into gear, trys to stall out. On the road
the car runs very rough, rich, can smell gas.

What grade of oil for manual transmission.  I put in 75W90 in my 1987 300ZX
and now it is leaking at the output shaft seal to drive shaft.  wrong oil?
or because synthetic is so good that it leaks everywhere?
Appreciate your comment.

I have a 1991 300zx 2+2, She's been sitting for a prolonged peroid of
time, when i tried to start her nothing happened no lights no nothing.
No big deal went and got a new batt , still no power anywhere, no
lights interior or exterior no power door locks,nothing. Checked the

Question for Steve or anyone.  I have replaced my muffler for a resonator so
it is loud but nice.  Still have cat and with stock pipe 2 inch diameter.
The question is if I am driving this car hard 3rd speed and 4th mostly..
that mean reving the engine up to 5500 rpm, should I be ...