8 PSI min - 80 PSI max
To check the fuel pressure on a 3.0 V6 Toyota pickup, you'll need a fuel pressure gauge. First, locate the fuel pressure test port, which is usually found on the fuel rail. Remove the cap from the test port, then connect the gauge to the port and turn the ignition key to the "ON" position without starting the engine to allow the fuel pump to pressurize the system. The gauge should read between 30-40 psi; if it's outside this range, it may indicate a fuel delivery issue.
40 on idle up to 60 while on the move.
800 RPM should yield about 25-40 lbs. of oil pressure on a stock motor.
An air gauge measures pressure relative to the atmospheric pressure, while a water gauge measures pressure relative to its own density. Water is denser than air, so the air gauge reading will be 3 times higher than the water gauge due to the difference in reference points for each gauge.
Need to know which pressure you refer to, fuel, radiator cap, tires, evap, ac, cylinder compression, transmission?
between 35/60 psi.
with your eyes
You need a vacuum gauge and it is reed in inches.
The number is the pounds per square inch
It is necessary to read the density and the quality of the gauge. You should see the lower side.
Forget formula - put a gauge on it and read it.