Fuel Pressure: Test
- Fuel Pressure - Relieve
- 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 Fuel Line/Quick-Connect Fitting -Removal and Installation 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 - Refer to:
Fuel and Emissions Systems DTC Troubleshooting Index (2016 2017 2018 2019 2020)
Fuel and Emissions Systems DTC Troubleshooting Index (2021) .
- If the pump does not run and no DTCs are stored, do the fuel pump circuit troubleshooting - Refer to:
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. Fuel Tank Unit - Disassembly and Reassembly and the fuel filter Fuel Tank Unit - Disassembly and Reassembly , then recheck the fuel pressure.