The fuel pressure of a 2003 Jeep Liberty Sport depends on the usage of the car. It can also depend on the elevation.
The 2003 Chevrolet Silverado 2506.0 liter engine fuel pressure should be between 15 pounds and 18 pounds. The specifications are for a new engine.
1997 ford f150 fuel pressure specs
255 lph
40 psi
47-54psi
torque specs air fuel mixture screw on a yz125 2003
The fuel pressure specs. are 9 to 13 LBS./PSI no more and no less.
35-65 psi
Fuel pressure regulator is located on the driver side fuel rail.
It should be 33 to 39 psi
It is inside of the fuel tank. You must remove the fuel tank to service it. You need to check the fuel pressure with a gauge FIRST. I would give you fuel pressure SPECS. But you did not say what year it was.
On the fuel tank.