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Home >> Genesis >> 2021 >> GV80 2.5T Advanced, AWD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Delivery System - 2.5L >> Release Residual Pressure In Fuel Line
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Release Residual Pressure In Fuel Line

CAUTION:
  • Whenever the high pressure fuel pump, fuel pipe, delivery pipe, or injector is removed immediately after shutting off the engine, an injury may be caused by the release of highly pressurized fuel. Release the residual pressure in the high pressure fuel line by referring to the "Residual fuel pressure release procedure" below before removing any high pressure fuel system components.
NOTE:
  • Wear safety glasses and fuel resistant gloves.
  1. Turn the ignition off and disconnect the battery negative cable.
  2. Remove the fuel pump fuse (A).
    G14721489Courtesy of HYUNDAI MOTOR AMERICA
  3. Connect the battery negative (-) terminal.
  4. Run the engine for about 1 minutes to lower the pressure in the low pressure line.
  5. Switch "OFF" the engine.
  6. Disconnect the low pressure fuel line quick connector at the High Pressure Pump. Use rags to cover opening and catch spills while removing the fuel line.
    NOTE:
    • Use rags to cover opening and catch spills while removing the fuel line.
  7. Start the engine and let it idle until the engine stops.
  8. Proceed with the service or repair.
  9. Reinstall/reconnect all components in reverse order of removal. Start engine and confirm proper operation, and make sure there are no fuel leaks.
  10. After completing, clear DTC(s) using diagnostic tool scan tool (the procedure described above will cause DTC to set).