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Home >> Genesis >> 2020 >> G80 3.8, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Fuel Delivery System - 3.3L) >> Repair Procedures >> Release Residual Pressure In Fuel Line

Release Residual Pressure In Fuel Line

WARNING: This page is about a different variant/trim than selected.
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. Open the trunk.
  2. Turn the Ignition OFF and disconnect the battery negative (-) terminal.
  3. Remove the service cover (A).
    G12663784Courtesy of HYUNDAI MOTOR AMERICA
  4. Remove the Fuel Pump Fuse (A).
    G12663785Courtesy of HYUNDAI MOTOR AMERICA
  5. Disconnect the electrical connector from the high pressure fuse pump.
  6. Reconnect the battery negative (-) terminal.
  7. Run the engine for about 20 seconds to lower the pressure in both the high or low pressure lines. The engine may shut off within the 20 second period. If not, turn the engine off.
  8. Proceed with the service or repair. Use rags to cover opening and catch spills when opening up the high pressure system.
  9. Reinstall/re-connect 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 GDS scan tool (the procedure described above will cause DTC to set).
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