Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA2008RLREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMFUEL SUPPLY SYSTEMFUEL PRESSURE TEST
2008 Acura RL
Fuel Pressure Test
2008 Acura RLSECTION Fuel Pressure Test
Special Tools Required
- Fuel pressure gauge 07406-004000A
- 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.
- 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, refer to the DTC TROUBLESHOOTING .
- Read the fuel pressure gauge. The pressure should be 380-430 kPa (3.9-4.4 kgf/cm2
, 55-63 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 FILTER REPLACEMENT ), then recheck the fuel pressure.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.