Fuel Pump: Testing and Inspection

Low Pressure Fuel Pump Test

NOTE: Assure fuel tank quantity and proper fuel gauge operation. Capture any fuel spillage and store in appropriately marked containers.

Fuel Pressure Test:

1. Disconnect the negative battery cable.
2. Connect fuel gauge # 5069-2 with adaptor #9068 to the low pressure fuel pump output line junction at the fuel pressure sensor and assure that the line locking tabs are secured in the lock position (pulled back after hose is fitted properly).
3. Connect negative battery cable.
4. Crank or start the engine and observe the fuel gauge reading.

Fuel Pressure Specification:

The low pressure pump draws fuel out of the fuel tank through the fuel filter. If the pressure reading is below specification, look for damaged or leaking fuel lines, replace the fuel filter and repeat this test. If the fuel pressure reading is below specification again, replace the low pressure fuel pump.