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Home >> Jeep >> 2021 >> Cherokee High Altitude, Automatic T/Case Control >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> 2.0L Fuel System >> Fuel Delivery, Gas >> Rail, Fuel >> Removal

Rail, Fuel: Removal

WARNING:

High-pressure fuel lines deliver fuel under extreme pressure from the injection pump to the injectors. This could be as high as 207 bar (3, 002 psi). Use extreme caution when inspecting for high-pressure fuel leaks. Inspect for high-pressure fuel leaks with a sheet of cardboard. Wear safety goggles and adequate protective clothing when servicing fuel system. Fuel under this amount of pressure can penetrate skin causing serious or fatal injury.

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NOTE:

If the fuel rail or the injectors are replaced, connect the diagnostic scan tool to the vehicle, go to Powertrain Control Module (PCM) in the "Miscellaneous functions" menu and start the following procedures: fuel feed system component replacement; adaptive parameter reset.

  1. Perform the fuel system pressure release procedure. Refer to FUEL SYSTEM PRESSURE RELEASE  .
  2. Disconnect and isolate the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), disconnect the IBS connector first before disconnecting the negative battery cable.
  3. Remove the top and side engine covers. Refer to COVER, ENGINE, REMOVAL .
  4. Remove the air outlet pipe. Refer to COOLER AND HOSES, CHARGE AIR, REMOVAL .
  5. Remove the ignition coils. Refer to REMOVAL .
    GC0181034Courtesy of CHRYSLER GROUP, LLC
  6. Remove the soundproofing panel (1).
  7. Disconnect the wire harness connections from the fuel injectors and the fuel pressure sensor.
    GC0180966Courtesy of CHRYSLER GROUP, LLC
  8. Remove the high pressure fuel pipe fitting (1) from the fuel rail.
  9. Using the (special tool #2025508140, Wrench, Fuel Line 17mm), loosen the high pressure fuel pipe fitting (2) at the fuel pump and discard the high pressure fuel pipe.
    GC0182562Courtesy of CHRYSLER GROUP, LLC
  10. Remove the bolts (1) securing the fuel rail to the cylinder head.
    GC0186258Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    The fuel injectors are attached to the fuel rail.

  11. Using the (special tool #2044500140, Remover, Fuel Rail) (1) lift the fuel rail and injectors from the cylinder head.
    GC0181014Courtesy of CHRYSLER GROUP, LLC
  12. Remove the fuel rail (1a) and injectors (1b).
    GC0180968Courtesy of CHRYSLER GROUP, LLC
  13. If required, remove the fuel pressure sensor (1).
    GC0181012Courtesy of CHRYSLER GROUP, LLC
  14. Remove the injector suspension pin retaining clips (1).
    GC0181002Courtesy of CHRYSLER GROUP, LLC
  15. Remove the injector (1b) suspension pins (1a).
    GC0180965Courtesy of CHRYSLER GROUP, LLC
  16. Remove the fuel injector (1a) from the fuel rail (1b).
    CAUTION:

    Do not twist the injector when removing the fuel rail. Damage to the connector portion of the fuel injector may occur.

    NOTE:

    The O-rings (a) and injector seal (b) must be replaced once they have been removed. The O-rings and injector seals should never be reused.

    GC0181006Courtesy of CHRYSLER GROUP, LLC
  17. Remove the O-rings (1) from the injectors.
    GC0180998Courtesy of CHRYSLER GROUP, LLC
  18. With the (special tool #2025505140, Pliers, Injector Seal Removal) (1a) partially remove the injector seal (1b).
    GC0181010Courtesy of CHRYSLER GROUP, LLC
  19. Finish removing the injector seal using the (special tool #2025504140, Pick, Injector Seal 90 Degree) (1a) and the (special tool #2025505140, Pliers, Injector Seal Removal) (1b).
  20. Repeat for all of the other injectors.
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