Fuel Pressure: Testing and Inspection
Fuel Pressure TestSpecial Tools Required
- Fuel pressure gauge 07406-004000A
- Fuel pressure gauge attachment set 07AAJ-S6MA150
- Fuel pressure gauge adapter 07VAJ-0040100
1. Relieve the fuel pressure.
2. K20A2 engine:
Attach the fuel pressure gauge attachment set (A) and the fuel pressure gauge (B) to the fuel line as shown.
3. K20A3 engine:
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.
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: remove the fuel fill cap and listen to fuel fill port while an assistant turns the ignition switch ON (II). You should hear the pump, run for about 2 seconds when the ignition is turned on.
- If the pump runs, step 6.
- If the pump does not run, test it.
6. 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 fuel filter, and recheck fuel pressure.
7. Remove the pressure gauge, and reinstall the fuel pulsation damper with a new washer. Tighten the fuel pulsation damper to 22 Nm (2.2 kgf.m, 16 lbf-ft).
NOTE: Disassemble and clean the fuel pressure gauge attachment thoroughly after use.