Recommended Procedure
WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- First verify that there is fuel in the tank and battery voltage going to the fuel pump, using a digital multimeter connected between the two circuits going to the pump. Battery voltage will be present for approximately 20 seconds after the ignition key is turned on. If no voltage is present, See TEST M: FUEL PUMP MONITOR/CONTROL under SYSTEM TESTS in SELF-DIAGNOSTICS - 6.0L DIESEL article.
- Remove the plug from the front of the secondary fuel filter housing. Install Adapter (303-765) and Gauge 0-160 psi (0-1.1 mPa) (Bar 014-00761) or equivalent. Measure pressure in crank or run. If pressure measures below 45 psi (310 kPa), go to the next step to verify no restriction.