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-connect fitting (A). 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.