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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 27 (Fuel Delivery System - 2.0L (Except HEV)) >> High Pressure Fuel Pump >> Repair Procedures >> Removal

Repair Procedures: Removal

WARNING: This page is about a different variant/trim than selected.
WARNING: 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" before removing any high pressure fuel system components.
  1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
  2. Release the residual pressure in fuel line.

    (Refer to the Fuel Delivery System - Repair Procedures - "RELEASE RESIDUAL PRESSURE IN FUEL LINE ")

    CAUTION: When removing the fuel pump fuse, a Diagnostic Trouble Code (DTC) may occur.
    Delete the code with the GDS after completion of "Release Residual Pressure in Fuel Line" work.
  3. Disconnect the fuel pressure control valve connector (A) and the fuel feed tube quick-connector (B).
    Fig 1: Disconnecting Fuel Pressure Control Valve Connector And Fuel Feed Tube Quick-Connector
    G11994656Courtesy of HYUNDAI MOTOR AMERICA
    NOTE: Open the clamp cover (B) before disconnect the quick connector. (If the clip is applied)
    Fig 2: Opening Clamp Cover
    G11994657Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION: When removing the quick-connector with the clip removing tool (A), be careful not to damage the plastic clip (B). If the clip is damaged, fuel line leak can be occurred due to a bad connection.
    Fig 3: Removing Quick-Connector With Clip Removing Tool
    G11994658Courtesy of HYUNDAI MOTOR AMERICA
  4. Remove the high pressure fuel pipe.
    1. Remove the high pressure pipe flange nut in order of B, C with the special service tool [SST No.: 09314-3Q100]
      Fig 4: Removing High Pressure Pipe Flange Nut (1 Of 2)
      G11994659Courtesy of HYUNDAI MOTOR AMERICA
      Fig 5: Removing High Pressure Pipe Flange Nut (2 Of 2)
      G11994660Courtesy of HYUNDAI MOTOR AMERICA
    2. Remove the purge control solenoid valve.

      (Refer to Engine Control System - "PURGE CONTROL SOLENOID VALVE ")

    3. Remove the function block installation bolt (D).
    Fig 6: Removing Function Block Installation Bolt
    G11994661Courtesy of HYUNDAI MOTOR AMERICA
  5. Remove the installation bolts (A), and then remove the high pressure fuel pump (B) from the cylinder head assembly.
    CAUTION: Unscrew in turn the two bolts in small step (0.5 turns). In case of fully unscrewing one of the two bolts with the other bolt installed, the housing surface of the cylinder head may be broken because of tension of the pump spring.
    Fig 7: Removing High Pressure Fuel Pump Installation Bolts
    G11994662Courtesy of HYUNDAI MOTOR AMERICA