Recommended Procedure:
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Ford RV Cutaway, 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
Verify there is fuel in the tank and battery voltage at the fuel pump. Using a digital multimeter, measure the voltage between the fuel pump power and ground circuits. Battery voltage will be present for approximately 20 seconds after the ignition key is turned on. If no voltage is present, GO to Pinpoint Test M .
Remove the plug from the front of the engine fuel filter housing. Install the High Pressure Pump Test Adapter 303-765 or equivalent and the Gauge 0-1.1 MPa (0-160 psi) Bar 014-00761 or equivalent. Measure the fuel pressure with the ignition switch in the START or ON position. If fuel pressure is below the specification of 310 kPa (45 psi), go to the next step to verify no restriction.