Low Pressure Fuel Pump Test
NOTE:
Assure fuel tank quantity and proper fuel gauge operation. Assure that the fuel pump fuse or relay is not open. Capture any fuel spillage and store in appropriately marked containers.
NOTE:
When the ignition switch is turned to the On position the fuel pump will begin to run for 20-30 seconds and then it stops.
The low pressure pump draws fuel out of the fuel tank module mixing bowl and pushes the fuel towards the fuel filter.
- Remove fuel pump pressure tap plug (2) and connect a fuel pressure gauge to the test port.
- Turn the ignition switch to the On position and observe the fuel gauge reading.
- If the pressure reading is below specification, look for damaged or leaking fuel lines or a restricted fuel filter. If no problem is found with the fuel system replace the fuel pump.
| FUEL PRESSURE SPECIFICATIONS | |
|---|---|
| SUCTION PRESSURE | 7.25 PSI (0.5 bar) |
| DELIVERY PRESSURE | 65 PSI (4.5 bar) |
| MAXIMUM FUEL DELIVERY | 53 gallons/hour(200 liters/hour) |