Fuel Pump: Testing and Inspection
Fuel Pressure TestSpecial Tools Required
- Fuel pressure gauge 07406-004000A
- Fuel pressure gauge set 07ZAJ-S5A0100
1. Relieve the fuel pressure.
2. Disconnect the quick-connect fitting (A). Attach the fuel pressure gauge set and fuel pressure gauge.
3. Start the engine, and let it idle.
- If the engine starts, go to step 5.
- If the engine does not start, go to step 4.
4. Check to see if the fuel pump is running: listen to the fuel fill port with the fuel fill cap removed. The fuel pump should run for 2 seconds when the ignition switch is first turned on.
- If the pump runs, go to step 5.
- If the pump does not run, perform the fuel pump circuit troubleshooting.
5. Read the pressure gauge. The pressure should be 270 - 320 kPa (2.8 - 3.3 kgf/Sq.cm, 40 - 47 psi)
- If the pressure is OK, the test is complete.
- If the pressure is out of specification, replace the fuel pressure regulator and the fuel filter, then recheck the fuel pressure.