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. Remove the cowl cover and the under-cowl panel (see COWL COVER REPLACEMENT ).
3. Disconnect the quick-connect fitting (A). Attach the fuel pressure gauge set and the fuel gauge.
   Fig 1: Attaching Fuel Pressure Gauge Set To Quick-Connect Fitting

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
4. Start the engine, and let it idle.
   • If the engine starts, go to step  6.
   • If the engine does not start, go to step  5.
5. 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 to ON (II).
   • If the pump runs, go to step  6.
   • If the pump does not run, do the fuel pump circuit troubleshooting (see FUEL PUMP CIRCUIT TROUBLESHOOTING  ).
6. Read the fuel pressure gauge. The pressure should be 320-370 kPa (3.3-3.8 kgf/cm² , 46.4-53.7 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.