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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (Engine Controls And Fuel - 1.6L (LWC) - Repair Instructions) >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Removal and Installation >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

Refer to Diesel/Gasoline Vapors Warning .

WARNING:

Refer to Safety Goggles and Fuel Warning .

CAUTION:

When working on the fuel rail and fuel injectors, always maintain a clean work surface. Failure to maintain a clean work surface can result in contaminant on the injector seals and cause leaks.

  1. Remove the 4 ignition coils. Refer to Ignition Coil Replacement .
  2. GM3011799

    Remove the 2 turbocharger coolant return pipe bolts (1, 3) from the turbocharger coolant return pipe (2).

  3. GM3011794

    Unclip the heater outlet hose (2) from the charge air cooler outlet hose clip (1) and put it along with the turbocharger coolant return hose aside.

  4. Remove the fuel injection fuel feed front pipe. Refer to Fuel Injection Fuel Feed Front Pipe Replacement .
  5. GM3283882

    Disconnect the fuel injection fuel rail wiring harness (1).

  6. GM2917592
    NOTE:

    The fuel rail bolts remain with decoupling elements and retainer at the fuel rail assembly.

    Loosen the 2 fuel rail bolts (2) from the cylinder head and from the camshaft bearing rear cap completely, but do not remove the bolts.

  7. Loosen the 4 fuel rail bolts (1) from the cylinder head completely, but do not remove the bolts.
  8. GM2917598
    NOTE:

    Never loosen both bolts at the same time. Failure to follow this caution could cause leaks or malfunction after installation.

    NOTE:

    Pay attention, that the bolt does not fall into the cylinder head slot.

    Remove the fuel injector bolt (1) from the fuel injector cylinder 1 (2) at the rail side.

  9. GM2966367

    Install the EN-51146-1-6  demounting screw (2) to the EN-51146-1-1  support (1) and tighten to 7 N.m (62 lb in).

  10. GM2918369

    Install the EN-51146-1-1  support to the fuel injector cylinder 1 (2) and tighten to 5 N.m (44 lb in).

  11. GM2918374

    Remove the fuel injector bolt (1) from the fuel injector cylinder 1 (2).

  12. Install the EN-51146-1-6  demounting screw to the EN-51146-1-1  support and tighten to 7 N.m (62 lb in).
  13. GM2918377

    Install the EN-51146-1-1  support (1) to the fuel injector cylinder 1 (2) and tighten to 5 N.m (44 lb in).

  14. Repeat the steps 6 - 11 for the other 3 injectors.
  15. GM2966405
    NOTE:

    The fuel rail bolts remain with decoupling elements and retainer at the fuel rail assembly.

    Loosen the 4 fuel rail bolts (1) completely from the cylinder head, but do not remove the bolts.

  16. GM2918368
    NOTE:

    Mind the arrow on the EN-51146-1-2  plate. The arrow must show in driving direction.

    Install the EN-51146-1-2  plate (2) to the 8 EN-51146-1-1  supports (4).

  17. Install the 8 plate bolts (3).
  18. Tighten 8 plate bolts (3) and counterhold with a wrench (1) at the EN-51146-1-1  supports (4).
  19. GM2918367

    Install the 2 EN-51146-1-3  sliding hammers (1) to the EN-51146-1-2  plate (2).

  20. GM2966354
    NOTE:

    Pay attention, that the fuel injectors do not cant. Failure to follow this caution can tilt or bend the injectors and could cause leaks or malfunction after installation.

    Pound the 2 EN-51146-1-3  sliding hammers at first equably to remove the fuel injector rail assembly, if necessary allocate the force.

  21. Keep care, that the alignment of the 2 EN-51146-1-3  sliding hammers (1) accord to the alignment of the fuel injectors (2), while pounding.
  22. Remove the fuel injector rail assembly.
  23. GM2918382
    CAUTION:

    After removing the fuel rail and injector assembly, do not allow the weight of the assembly to rest on the fuel injectors. Always position the assembly on a clean work surface with the fuel injectors on top. Failure to follow this caution could cause leaks or malfunction after installation.

    CAUTION:

    Refer to Fuel Rail Removal Caution .

    Install the EN-51146-1-2  plate (1) with the fuel injector assembly to a bench vise (2).

  24. GM2966369
    NOTE:

    The EN-51146-2-5  calibration tools are also used to protect the fuel injectors.

    Install the 4 EN-51146-2-5  calibration tools (2) rotary to the fuel injectors (1), as shown in the graphic.

  25. Cover the fuel injector bores at the cylinder head, to prevent for dirt.
  26. Remove the 2 EN-51146-1-3  sliding hammers.
  27. Remove the 4 EN-51146-2-5  calibration tools.
  28. Inspect all fuel injectors for damage.
  29. GM2918378
    CAUTION:

    Always use the stylus from the EN-51146 fuel injector kit. Never use a metal tool in place of the stylus. Use of another tool can damage the fuel injector and may cause a leak.

    Remove the 2 combustion seals (2) each fuel injector, use EN-51146-2-1  stylus (1).

  30. Inspect all fuel injectors for damage, again.
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