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. 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:

   330-380 kPa (3.4-3.9 kgf/cm ²  , 48-55 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.