Fuel Pressure Test

Special Tools Required 

• Fuel pressure gauge 07406-004000B
• Fuel pressure gauge attachment set 07AAJ-S6MA150

1. Relieve the fuel pressure (see FUEL PRESSURE RELIEVING  ).
2. Disconnect the quick-connector fitting. Attach the fuel pressure gauge set and the fuel pressure gauge.
   Fig 1: Attaching Fuel Pressure Gauge Set And Fuel Pressure Gauge

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
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 filler 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, do the fuel pump circuit troubleshooting (see FUEL PUMP CIRCUIT TROUBLESHOOTING  ).
5. Read the fuel pressure gauge. The pressure should be 380-430 kPa (3.9-4.4 kgf/cm² , 55-63 psi).
   • If the pressure is OK, the test is complete.
   • If the pressure is out of specification, replace the fuel pressure regulator (see FUEL PRESSURE REGULATOR REPLACEMENT  ), and the fuel filter (see FUEL PRESSURE REGULATOR REPLACEMENT  ), then recheck the fuel pressure.