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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 539 (Fuel System) >> Fuel Delivery >> Rail-Fuel >> Removal >> 3.7L V-6

3.7L V-6

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: THE FUEL SYSTEM IS UNDER CONSTANT PRESSURE EVEN WITH ENGINE OFF. BEFORE SERVICING FUEL RAIL, FUEL SYSTEM PRESSURE MUST BE RELEASED.
CAUTION: The left and right fuel rails are replaced as an assembly. Do not attempt to separate rail halves at connector tubes. Due to design of tubes, it does not use any clamps. Never attempt to install a clamping device of any kind to tubes. When removing fuel rail assembly for any reason, be careful not to bend or kink tubes.
Fig 1: Remove/Install Injector Connector
GC0006525Courtesy of DAIMLERCHRYSLER CORP.
  1. Remove fuel tank filler tube cap.
  2. Perform Fuel System Pressure Release Procedure.
  3. Remove negative battery cable at battery.
  4. Remove air duct at throttle body air box.
  5. Remove air box at throttle body.
  6. Remove air resonator mounting bracket at front of throttle body (2 bolts).
  7. Disconnect fuel line latch clip and fuel line at fuel rail. A special tool will be necessary for fuel line disconnection. Refer to FITTING, QUICK CONNECT .
  8. Remove necessary vacuum lines at throttle body.
  9. Disconnect electrical connectors at all 6 fuel injectors. Refer to Fig 2. Push red colored slider away from injector (1). While pushing slider, depress tab (2) and remove connector (3) from injector. The factory fuel injection wiring harness is numerically tagged (INJ 1, INJ 2, etc.) for injector position identification. If harness is not tagged, note wiring location before removal.
  10. Disconnect electrical connectors at all throttle body sensors.
  11. Remove 6 ignition coils. Refer to COIL-IGNITION .
    Fig 2: Fuel Rail Remove/Install - 3.7L V-6
    GC0006524Courtesy of DAIMLERCHRYSLER CORP.
  12. Remove four fuel rail mounting bolts (1).
  13. Gently rock and pull left  side of fuel rail until fuel injectors just start to clear machined holes in cylinder head. Gently rock and pull right  side of rail until injectors just start to clear cylinder head holes. Repeat this procedure (left/right) until all injectors have cleared cylinder head holes.
  14. Remove fuel rail (with injectors attached) from engine.
  15. If fuel injectors are to be removed, refer to Fuel Injector REMOVAL /INSTALLATION .
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