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Home >> Acura >> 2004 >> TSX L4-2.4L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Tune-up and Engine Performance Checks >> Fuel Pressure >> Testing and Inspection

Fuel Pressure: Testing and Inspection

Fuel Pressure Test

Special Tools Required
- Fuel pressure gauge 07406-004000A
- Fuel pressure gauge set 07ZAJ-S5A0100
- Fuel hose attachment 07ZAJ-S7C0100
- Fuel joint attachment 07ZAJ-S7C0200

1. Relieve the fuel pressure.




2. Disconnect the quick-connect fitting (A). Attach the fuel pressure gauge set and the fuel pressure gauge.
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.

5. Read the fuel pressure gauge. The pressure should be 330 - 380 kPa (3.4 - 3.9 kgf/sq.cm, 48 - 55 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 the fuel pressure.
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