hi,
part of rebuilding my s/c 95 m-ed was to replace the idiot oil pressure guage with a real one from an earlier car, (93 i think). went it is fairly cold, the gauge reads 30 + to almost 60# on higher rev's but once hot, it reads less than 30 and as low as ~10#.
does this sound right?
i also found the water temp sender on ther left side of the back side of the motor, so my water gauge works now too...next is the a/c trouble shooting, (elec i think) tia, peter
Normal pressures using the recommended 10W30 vary with oil temperature and rpm.
Cold idle 50-60 psi, cold 4000 rpm 80-90 psi. Hot idle 20-30 psi, hot 4000 rpm 50-60 psi.
10 psi seems a little low, but as long as it comes up with rpm I wouldn't worry. Miata gauges aren't terribly accurate anyway.
castrol 5w30
maybe that is why they went to the idiot-style gauge, eh :)
thanks lenny
i'm assuming that your oil is topped off and the oil was changed recently. my gauge will occasionally show lower pressure when i'm a quart low and that goes away when the oil is topped off and/or when the oil is changed.
-------- "any words spelled incorrectly are probably typing errors"
excellent point, it is a new motor so i did not check but i wont forgot this idea. peter
~10 psi --That's low for a motor in good condition with low mileage.
"excellent point, it is a new motor so i did not check but i wont forgot this idea. peter"
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