2008 Jeep Commander Base, 3.7 K, RWDFACTORY OEM SERVICE PROCEDURE

Fuel Rail - 5.7L

Fig 1: Locating Fuel Rail Mounting Bolts
GC0038702Courtesy of CHRYSLER LLC
  1. If fuel injectors are to be installed, see INSTALLATION .
  2. Clean out fuel injector machined bores in intake manifold.
  3. Apply a small amount of engine oil to each fuel injector O-ring. This will help in fuel rail installation.
  4. Position fuel rail/fuel injector assembly to machined injector openings in intake manifold.
  5. Guide each injector into intake manifold. Be careful not to tear injector O-rings.
  6. Push right  side of fuel rail down until fuel injectors have bottomed on shoulders. Push left  fuel rail down until injectors have bottomed on shoulders.
  7. Install 4 fuel rail hold down clamps and 4 mounting bolts (1). See Fig 1. See SPECIFICATIONS .
  8. Connect electrical connector to throttle body.
    Fig 2: Identifying Injector Connector
    GC0006529Courtesy of CHRYSLER LLC
  9. Connect electrical connectors at all fuel injectors. Push connector onto injector (1) and then push and lock red colored slider (2). Verify connector is locked to injector by lightly tugging on connector. See Fig 2.
  10. Connect fuel line latch clip and fuel line to fuel rail. See STANDARD PROCEDURE .
  11. Install air resonator to throttle body (2 bolts).
  12. Install flexible air duct to air box.
  13. Connect battery cable to battery.
  14. Start engine and check for leaks.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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