Fuel Pressure Test
Special Tools Required
- Fuel pressure gauge 07406-004000B
- Fuel pressure gauge attachment set 07AAJ-S6MA150
- Fuel pressure gauge adapter 07VAJ-0040100
- Relieve the fuel pressure (see FUEL PRESSURE RELIEVING ).
- K20A2/K20Z1/K20A3 (2005-2006 models) engines:
Attach the fuel pressure gauge attachment set (A) and the fuel pressure gauge (B) to the fuel line as shown.
- K20A3 (2002-2004 models) engines:
Remove the fuel pulsation damper from its fitting, and attach the fuel pressure gauge adapter (A) and the fuel pressure gauge (B).
NOTE: Replace all washers whenever the fuel pulsation damper is loosened or removed. - 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.
- Check to see if the fuel pump is running: listen to fuel fill port with the fuel fill cap removed. The fuel pump run for about 2 seconds when the ignition is turned on.
- If the pump runs, step 6.
- If the pump does not run, do the fuel pump circuit troubleshooting (see FUEL PUMP CIRCUIT TROUBLESHOOTING ).
- Read the pressure gauge. The pressure should be 320-370 kPa (3.3-3.8 kgf/cm2
, 47-54 psi).
- If the pressure is OK, the test is complete.
- If the pressure is out of specification, replace the fuel pressure regulator, 2002-2004 models (see FUEL PRESSURE REGULATOR REPLACEMENT ), 2005-2006 models (see FUEL PRESSURE REGULATOR REPLACEMENT ), and the fuel filter, 2002-2004 models (see FUEL FILTER REPLACEMENT ), 2005-2006 models (see FUEL FILTER REPLACEMENT ), then recheck fuel pressure.
- K20A3 (2002-2004 models) engine:
Remove the pressure gauge, and reinstall the fuel pulsation damper with a new washer. Tighten the fuel pulsation damper to 22 N.m (2.2 kgf.m, 16 lbf.ft).
NOTE: Disassemble and clean the fuel pressure gauge attachment thoroughly after use.