Fuel Pressure: Testing and Inspection

Fuel Pressure Test

Special Tools Required
- Fuel pressure gauge 07406-004000B
- Fuel pressure gauge attachment set 07AAJ-S6MA150
- Fuel pressure gauge adapter 07VAJ-0040100

1. Relieve the fuel pressure.




2. 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.

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 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 5.
- If the pump does not run, do the fuel pump circuit troubleshooting.

5. Read the pressure gauge.
The pressure should be 320 - 370 kPa (3.3 - 3.8 kgf/sq.cm, 47 - 54 psi).
- If the pressure is OK, the test is complete.
- If the pressure is out of specification, replace the fuel pressure regulator and the fuel filter, then recheck fuel pressure.