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Home >> Buick >> 2016 >> Cascada Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 1.6L (LWC) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Removal and Installation >> Installation Procedure

Installation Procedure

  1. Clean and inspect the fuel injectors and the fuel injector rail. Do not remove the fuel injector from the fuel rail. Refer to Fuel Injector and Fuel Injector Bore Cleaning and Inspection .
    2. Fig 1: Combustion Seals
    GM2918343Courtesy of GENERAL MOTORS COMPANY
  2. Install a NEW combustion fuel injector seal (1) to the EN-51146-2-2  mounting sleeve-long (2).
    3. Fig 2: Installing Combustion Seals
    GM2918345Courtesy of GENERAL MOTORS COMPANY
  3. Use the EN-51146-2-6-1  slider outside (1) to push down the combustion fuel injector seal (2) on the EN-51146-2-2  mounting sleeve-long (3).
    4. Fig 3: Installing Combustion Seals
    GM2966372Courtesy of GENERAL MOTORS COMPANY
  4. Push the combustion fuel injector seal (2) over the EN-51146-2-2  mounting sleeve-long , use the EN-51146-2-6-1  slider outside (1) to the fuel injector (3).
  5. Remove the EN-51146-2-2  mounting sleeve-long with the EN-51146-2-1  stylus from the EN-51146-2-6-1  slider outside.
  6. Install a NEW combustion fuel injector seal to the EN-51146-2-3  mounting sleeve-short.
  7. Use the EN-51146-2-6-1  slider outside to push down the combustion fuel injector seal on the EN-51146-2-2  mounting sleeve-short.
  8. Push the combustion fuel injector seal over the EN-51146-2-3  mounting sleeve-short , use the EN-51146-2-6-1  slider outside to the fuel injector.
  9. Remove the EN-51146-2-3  mounting sleeve-short with the EN-51146-2-1  stylus from the EN-51146-2-6-1  slider outside.
    10. Fig 4: Fuel Injector Limiter
    GM3621254Courtesy of GENERAL MOTORS COMPANY
  10. Before using the EN-51146-2-4  pre-sizing tool (1), check if the fuel injector limiter (2) is in the right position.
    11. Fig 5: Pre-Sizing Tool
    GM2918347Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    1st form the combustion fuel injector seals a bit with finger and thumb.

  11. Push the EN-51146-2-4  pre-sizing tool (1) over the fuel injector (2).
    12. Fig 6: Pre-Sizing Tool
    GM2918354Courtesy of GENERAL MOTORS COMPANY
  12. Tighten the nut (2) and counterhold at the spanner flat of the EN-51146-2-4  pre-sizing tool thread (1) until the measure (a) of 4.5 mm (0.177 in) is reached.
  13. Loosen the nut (2) of the EN-51146-2-4  pre-sizing tool.
    14. Fig 7: Take Off Chassis
    GM2918355Courtesy of GENERAL MOTORS COMPANY
  14. Install the EN-51146-2-4-7  take off chassis (2) to the EN-51146-2-4  pre-sizing tool (3).
  15. Install the EN-51146-2-4-6  screw M10 (1) to the EN-51146-2-4-7  take off chassis (2), and tighten until the EN-51146-2-4  pre-sizing tool (3) is loosed.
    16. Fig 8: Calibration Tool
    GM2968075Courtesy of GENERAL MOTORS COMPANY
  16. Install the EN-51146-2-5  calibration tool (2) rotary to the fuel injector (1), as shown in the graphic.
  17. Remove the EN-51146-2-5  calibration tool from the fuel injector.
    18. Fig 9: Installing Seal
    GM2918356Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    The fuel injector seals must fit properly in the relative groove. Overlapping of the fuel injector seals with the external surface of the injector must be avoided. If the seals are installed incorrectly, it could cause leaks and risk of injury.

  18. Check the combustion fuel injector seals (2 seals each fuel injector) for correct seat:
    • The seal must not be too large, buckled or corrugated (1).
    • The seal must be fixed tight and accurate (2).
  19. If the seals are installed not correctly, repeat the steps 27 - 29 of the removal procedure and the steps 1 - 19 of the installation procedure.
    20. Fig 10: Calibration Tools
    GM2918386Courtesy of GENERAL MOTORS COMPANY
  20. Install the 4 EN-51146-2-5  calibration tools (2) rotary to the fuel injectors (1).
  21. Remove the fuel injector assembly with the EN-51146-1-2  plate from the bench vise.
    22. Fig 11: Plate, Bolts And Supports
    GM2918404Courtesy of GENERAL MOTORS COMPANY
  22. Remove the 8 plate bolts (1) and remove EN-51146-1-2  plate (2), counterhold with a wrench (4) at the EN-51146-1-1  supports (3).
    23. NOTE:

    Never loosen both EN-51146-1-1  supports at the same time. Failure to follow this caution could cause leaks or malfunction after installation. It is only possible, when the fuel injector will be replaced.

    Fig 12: Support
    GM2918395Courtesy of GENERAL MOTORS COMPANY
  23. Remove one EN-51146-1-1  support (2) from the fuel injector (3).
    24. NOTE:

    DO NOT reuse the old fuel injector bolt.

  24. Apply thread lock agent to the NEW fuel injector bolt (1).
    25. CAUTION:

    Refer to Fastener Caution .

  25. Install NEW fuel injector bolt to the fuel injector and tighten to 5 N.m (44 lb in).
    26. Fig 13: Support
    GM2918396Courtesy of GENERAL MOTORS COMPANY
  26. Remove the EN-51146-1-1  support (1) from the fuel injector (3).
    27. NOTE:

    DO NOT reuse the old fuel injector bolt.

  27. Apply thread lock agent to the NEW fuel injector bolt (2).
  28. Install a NEW fuel injector bolt to the fuel injector and tighten to 5 N.m (44 lb in).
  29. Repeat the steps 22 - 27 for the other 3 injectors.
  30. Clean the fuel injector bores at the cylinder head. Refer to Fuel Injector and Fuel Injector Bore Cleaning and Inspection .
    31. Fig 14: Decoupling Elements And Retainers
    GM2969109Courtesy of GENERAL MOTORS COMPANY
  31. Check the fuel injector rail assembly:
    • Check the 4 fuel injector for damage.
    • Check the 8 fuel injector seals for correct seat.
    • Check if all bolts (3) with decoupling elements (1) and retainer (2) are complete.
  32. Remove the 4 EN-51146-2-5  calibration tools from the fuel injector.
    33. Fig 15: Fuel Rail Assembly
    GM2918365Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    During the installation of the fuel rail and injector assembly, ensure that the fuel injectors are positioned straight into the injector opening. Failure to follow this caution can tilt or bend the injectors and could cause leaks or malfunction after installation.

  33. Install carefully the fuel rail assembly (1).
  34. Push the fuel injectors slightly in their seats.
    35. Fig 16: Fuel Rail Bolts
    GM2966402Courtesy of GENERAL MOTORS COMPANY
  35. Tighten the 10 fuel rail bolts (1) in the sequence as shown to 10 N.m (89 lb in).
    36. Fig 17: Uel Injection Fuel Rail Wiring Harness
    GM3283882Courtesy of GENERAL MOTORS COMPANY
  36. Connect the fuel injection fuel rail wiring harness (1).
  37. Install the fuel injection fuel feed front pipe. Refer to Fuel Injection Fuel Feed Front Pipe Replacement .
    38. Fig 18: Turbocharger Coolant Return Hose
    GM3011794Courtesy of GENERAL MOTORS COMPANY
  38. Position the heater outlet hose along with the turbocharger coolant return hose (2), clip in the hose to the charge air cooler outlet hose clip (1).
    39. Fig 19: Turbocharger Coolant Return Pipe Bolts
    GM3011799Courtesy of GENERAL MOTORS COMPANY
  39. Install the turbocharger coolant return pipe bolts (1, 3) and tighten to 10 N.m (89 lb in).
  40. Install the 4 ignition coils. Refer to Ignition Coil Replacement .
    41. WARNING:

    Fuel escapes- observe safety measures and national legislation. Failure to comply could result in personal injury.

    NOTE:

    Ensure that all work at the engine is finished.

  41. Perform a fuel rail assembly leak test.
    1. Start the engine.
    2. Check the fuel system for escaping fuel.
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