Fuel Pressure Test: Test
WARNING:
Flammable - Keep Fire Away
NOTE:
- How to read the torque specifications .
- Refer to the Fuel and Emissions Systems Service Precautions before disconnecting the fuel line.
- Fuel Pressure - Relieve
- Fuel Hose Cover - Remove
- Fuel Pressure - Relieve
1. Remove the quick-connect fitting cover 2. Check the fuel quick-connect fitting (A) for dirt, and clean it if needed.
3. Place a rag or shop towel over the quick-connect fitting, then disconnect the quick-connect fitting .
- Fuel Pressure - Test
NOTE: If you were referred to this procedure from a troubleshooting procedure, test the fuel pressure under the same conditions the malfunction occurred (engine speed, load, throttle position, etc.). 1. Disconnect the quick-connect fitting and attach the fuel pressure gauge set. Check for leaks with the gauge set attached.
2. Start the engine, and let it idle.
- If the engine starts, go to step 3 and read the fuel pressure gauge.
- If the pump does not run and any DTCs are stored, do the DTC troubleshooting .
- If the pump does not run and no DTCs are stored, do the fuel pump circuit troubleshooting .
3. Read the fuel pressure gauge. The pressure should be:410-460 kPa (4.18-4.69 kgf/cm 2, 59.5-66.7 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.