Fuel Pressure Test

WARNING: This page is about a different car, the 2008 Honda Pilot, 2007 Honda Pilot, and 2006 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools Required

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

Relieve the fuel pressure (see FUEL PRESSURE RELIEVING ).
Disconnect the quick-connect fitting. Attach the fuel pressure gauge set and the fuel pressure gauge.

Fig 1: Attaching Fuel Pressure Gauge Set & Fuel Pressure Gauge
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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.
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 ).
Read the fuel pressure gauge. The pressure should be 390-440 kPa (4.0-4.5 kgf/cm² , 57-64 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.