Electric Fuel Pump Pressure: Purpose
WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The purpose of this test is to verify the fuel system pressure.
Electric Fuel Pump Pressure
- Measure the fuel pressure using the Fuel Line Adapter 310-159 or equivalent.
- Road test the vehicle with the engine at full load condition.
NOTE:
If using a scan tool for the fuel pump pressure test, the scan tool value may vary by 10% on the 20.7 kPa (3 psi) specification.
| Instrument | Specification | Measurement |
|---|---|---|
| 0-200 kPa (0-30 psi) gauge | 20.7-55.2 kPa (3-8 psi) |
If pressure fails low, go to test 14, Fuel Conditioning Module Inlet Restriction Test.
If fuel pressure is above specification, check the fuel return lines for a restriction.
If no restriction is present, install a new fuel pressure regulator valve in the secondary fuel filter housing.