LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2016 >> Cruze LS, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 1.4L (LE2) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Removal and Installation >> Installation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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. Install the EN-51146-2-2  mounting sleeve-long (2) to the fuel injector (1).
    Fig 1: Mounting Sleeve-Long
    GM4732084Courtesy of GENERAL MOTORS COMPANY
  3. Install a NEW combustion fuel injector seal (1) to the EN-51146-2-2  mounting sleeve-long (2).
    Fig 2: Combustion Fuel Injector Seal And Long Mounting Sleeve
    GM3764347Courtesy of GENERAL MOTORS COMPANY
  4. Use the EN-51146-2-6  slider (1) to push down the combustion fuel injector seal (2) on the EN-51146-2-2  mounting sleeve-long (3).
    Fig 3: Installing Combustion Seals
    GM2918345Courtesy of GENERAL MOTORS COMPANY
  5. Use the EN-51146-2-6  slider (1) to install the fuel injector combustion seal (2) over the EN-51146-2-2  mounting sleeve-long to the fuel injector (3).
    Fig 4: Installing Combustion Seals
    GM3764346Courtesy of GENERAL MOTORS COMPANY
  6. Remove the EN-51146-2-2  mounting sleeve-long with the EN-51146-2  stylus from the EN-51146-2-6-1  slider outside.
  7. Install the EN-51146-2-3  mounting sleeve-short (2) to the fuel injector (1).
    Fig 5: Mounting Sleeve-Short
    GM4732173Courtesy of GENERAL MOTORS COMPANY
  8. Install a NEW combustion fuel injector seal (4) to the EN-51146-2-3  mounting sleeve-short (2).
  9. Use the EN-51146-2-6  slider (3) to push down the combustion fuel injector seal on the EN-51146-2-3  mounting sleeve-short.
  10. Use the EN-51146-2-6  slider (1) to install the fuel injector combustion seal (2) over the EN-51146-2-3  mounting sleeve-short to the fuel injector (3).
  11. Remove the EN-51146-2-3  mounting sleeve-short (2) with the EN-51146-2-1  stylus from the EN-51146-2-6  slider (1).
  12. Before using the EN-51146-2-4  pre-sizing tool (1), check if the fuel injector limiter (2) is in the right position.
    Fig 6: Fuel Injector Limiter
    GM3621254Courtesy of GENERAL MOTORS COMPANY
  13. Push the EN-51146-2-4  pre-sizing tool (1) over the fuel injector (2) and fuel injector combustion seals.
    Fig 7: Pre-Sizing Tool
    GM2918347Courtesy of GENERAL MOTORS COMPANY
    NOTE: First form the combustion fuel injector seals a bit with finger and thumb.
  14. Tighten the nut (2) and counterhold at the wrench 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.
    Fig 8: Pre-Sizing Tool
    GM2918354Courtesy of GENERAL MOTORS COMPANY
  15. Loosen the nut (2) of the EN-51146-2-4  pre-sizing tool.
  16. Install the EN-51146-2-4-7  puller (2) to the EN-51146-2-4  pre-sizing tool (3).
    Fig 9: Take Off Chassis
    GM2918355Courtesy of GENERAL MOTORS COMPANY
  17. Install the EN-51146-2-4-6  screw M10 (1) to the EN-51146-2-4-7  puller (2) and tighten until the EN-51146-2-4  pre-sizing tool (3) is loosened.
  18. Install the EN-51146-2-5  calibration tool (2) to the fuel injector (1), rotate in the direction as shown in the graphic.
    Fig 10: Calibration Tool
    GM2968075Courtesy of GENERAL MOTORS COMPANY
  19. Remove the EN-51146-2-5  calibration tool from the fuel injector.
  20. Check the combustion fuel injector seals (2 seals each fuel injector) for correct seat:
    Fig 11: 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.
    • The seal must not be too large, buckled or corrugated (1).
    • The seal must be fixed tight and accurate (2).
  21. If the seals are installed not correctly, repeat the steps 26 - 28 of the removal procedure and the steps 1 - 20 of the installation procedure.
  22. Install the 4 EN-51146-2-5  calibration tools (2) rotary to the fuel injectors (1).
    Fig 12: Calibration Tools
    GM2918386Courtesy of GENERAL MOTORS COMPANY
  23. Remove the fuel injector assembly with the EN-51146-100  plate from the bench vise.
  24. Remove the 8 plate bolts (1) and remove EN-51146-100  plate (2), counterhold with a wrench (4) at the EN-51146-1-1  supports (3).
    Fig 13: Plate, Bolts And Supports
    GM2918404Courtesy of GENERAL MOTORS COMPANY
  25. Remove one EN-51146-1-1  support (2) from the fuel injector (3).
    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 14: Support
    GM2918395Courtesy of GENERAL MOTORS COMPANY
  26. Apply thread lock agent to the NEW fuel injector bolt (1).
    NOTE: DO NOT reuse the old fuel injector bolt.
  27. Install a NEW fuel injector bolt to the fuel injector and tighten to 5 (44 lb in).
  28. Remove the EN-51146-1-1  support (1) from the fuel injector (3).
    Fig 15: Support
    GM2918396Courtesy of GENERAL MOTORS COMPANY
  29. Apply thread lock agent to the NEW fuel injector bolt (2).
    NOTE: DO NOT reuse the old fuel injector bolt.
  30. Install a NEW fuel injector bolt to the fuel injector and tighten to 5 N.m (44 lb in).
  31. Repeat the steps 25 - 30 for the other 3 injectors.
  32. Clean the fuel injector bores at the cylinder head. Refer to Fuel Injector and Fuel Injector Bore Cleaning and Inspection .
  33. Inspect the fuel injector rail assembly:
    Fig 16: Fuel Injector Rail Assembly
    GM4175028Courtesy of GENERAL MOTORS COMPANY
    • Check the 4 fuel injector for damage (5).
    • Check the 8 fuel injector seals for correct seat (4).
    • Check if all bolts (3) with decoupling elements (1) and retainer (2) are complete.
  34. Remove the 4 EN-51146-2-5  calibration tools from the fuel injector.
  35. Install carefully the fuel rail assembly (1).
    Fig 17: Fuel Rail Assembly
    GM4168603Courtesy 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.
  36. Push the fuel injectors slightly in their seats.
  37. Tighten the 8 fuel rail bolts in the sequence as shown to 10 N.m (89 lb in).
    Fig 18: Fuel Rail Bolt Tightening Sequence
    GM4168612Courtesy of GENERAL MOTORS COMPANY
  38. Fuel Injection Fuel Rail Wiring Harness (1)» Connect
    Fig 19: Fuel Injection Fuel Rail Wiring Harness
    GM3682448Courtesy of GENERAL MOTORS COMPANY
  39. Fuel Feed Intermediate Pipe» Install - Fuel Feed Intermediate Pipe Replacement - High Pressure 
  40. Ignition Coil» Install - Ignition Coil Replacement  [4x]
  41. Perform a fuel rail assembly leak test.
    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.
    1. Start the engine.
    2. Check the fuel system for leaks.
scientia non olet · About LEMON Manuals