Check this procedure to check fuel pressure about this device, first take the injector cover off the top of the engine using a ratchet and socket...
1.- find the schrader valve on the fuel rail. This is the fuel tube that holds the fuel injectors. You might need to unscrew a plastic cap off the valve. You will recognize the valve because it is similar to the air valve on (some models)
2.- Wrap a shop rag around the valve to prevent fuel spilling over the engine or yourself when connecting the fuel pressure gauge.
3.- conect a fuel pressure gauge to the Schrader valve.
4.- Insert the gauge bleed hose into a 16-oz. or larger container to catch the fuel during this test.
5,- turn on the ignition without starting the engine.
6.- open the bleed hose valve on the gauge to bleed the air from the fuel system.
7.. Connect a scan tool into the assembly line diagnostic link electrical connector located under the dashboard on the driver's side (I'm assuming this location)
8.- Activate the fuel pump using the scan tool following the tool's instruction manual.
9.- close the gauge's bleed hose valve as soon as fuel begins to bleed into the container without air bubbles.
10.- read the gauge. Fuel pressure should be between 60 and 66 psi.
FInally, turn off the ignition and disconnect the scan tool and fuel pressure gauge.
Also, its possible that this information helpfull:
fuel_pressure.htmlHope helps.