NOTE: These are my notes from a generic fuel injection book.  Readings are approximate.  I have not done these procedures, but they sound reasonable to me.  Corrections and updates would be appreciated.

You will be working with gasoline, the most dangerous common substance on the planet.  Vapors can ignite from a spark or ember several feet away from the source of gasoline and it doesn't just burn, it bursts into flame explosively.  Don't screw around.  Be safe.  THINK.  It's best to have an extra set of hands and an extra brain around - preferably an aware one.  A fire extinguisher is an excellent idea, too.  Vaguely related side trip.

bulletObtain the following:
bullet5/16" barbed brass joiner fitting
bullet5/16" barbed brass tee
bulletthree 5/8" hose clamps
bullet0 - 100 psi gauge
bullethigh-pressure hose sufficient to connect gauge to tee

 

bulletRelieve the fuel pressure
bulletloosen the gas cap
bulletremove the fuel pump fuse
bulletcrank engine until no firing
bulletre-install the fuel pump fuse

 

bulletInstall the tee and gauge
bulletCut the inlet line
bulletit runs the width of the fuel rail and connects to the top right side of the rail as viewed from the front of the car
bulletInstall the tee in the line
bulletInstall the gauge to the tee
bulletclamp all connections

 

bulletDisconnect the vacuum line from the fuel pressure regulator (top left of fuel rail, as viewed from the front) and plug the line
bulletStart the engine and read the pressure at idle
bulletfuel pressure should read approximately 35 psi
bulletReconnect the vacuum line to the pressure regulator
bulletpressure should drop to approximately 30 psi
bulletif no difference, the pressure regulator is bad
bulletif significantly less than stated pressures -
bulletSLOWLY pinch the fuel return line (left side of rail as viewed from front, exiting from the bottom of he rail) and see if the pressure rises to at least 35 psi (do not exceed 80 psi)
bulletif so, the pressure regulator is bad
bulletif not, the pump is probably bad fuel delivery
bulletIf significantly greater than stated pressures -
bulletcut the engine off, bleed fuel pressure off as before, remove the return line from the bottom of the fuel rail and connect a length of  line from the rail outlet to an external container (1 gallon minimum, to collect the gasoline)
bulletRestart the engine and check the pressure (stop engine quickly to avoid pumping more as than the container can hold)
bulletpressure correct?
bulletfuel return line is blocked
bulletpressure still high?
bulletpressure regulator is bad

When finished, disconnect the tee & gauge assembly and reconnect the fuel supply line using the barbed connector and two clamps.  Make sure the fuel return line is securely installed.