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Home >> Chrysler >> 2012 >> 300 Base, Trans Mfr CD 8HP45, Gas/Ethanol >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System >> Fuel Delivery, Gas >> Rail, Fuel >> Removal >> 5.7L

Rail, Fuel: Removal: 5.7L

WARNING:

The fuel system is under constant pressure even with engine off. Before servicing the 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 fuel rail halves at connector tube. Due to design of the connector tube, it does not use any clamps. Never attempt to install a clamping device of any kind to the connector tube. When removing fuel rail assembly for any reason, be careful not to bend or kink the connector tube.

Fig 1: Negative Battery Cable
GC0139402Courtesy of CHRYSLER GROUP, LLC
  1. Perform fuel system pressure release procedure. Refer to FUEL SYSTEM PRESSURE RELEASE  .
  2. Disconnect the negative battery cable.
  3. Remove fuel tank filler cap.
    Fig 2: Oil Fill Cap & Engine Cover
    GC0143807Courtesy of CHRYSLER GROUP, LLC
  4. Remove the engine cover (2).
    Fig 3: Intake Air Temperature (IAT) Sensor, Air Cleaner Housing, Resonator Retaining Bolt & Hose Clamp
    GC0144403Courtesy of CHRYSLER GROUP, LLC
  5. Disconnect the electrical connector at the Intake Air Temperature (IAT) sensor (1).
  6. Loosen the hose clamp at the air cleaner housing (2).
  7. Remove the resonator retaining bolt (3).
  8. Loosen the hose clamp at the throttle body (4) and remove the resonator.
  9. Disconnect electrical connectors at all 8 fuel injectors. Push red colored slider away from injector (1). While pushing slider, depress tab (2) and remove the connector (3) from the injector.
  10. Disconnect throttle body electrical connectors.
    Fig 4: Fuel Rail Mounting Bolts Tightening Sequence
    GC0132256Courtesy of CHRYSLER GROUP, LLC
  11. Disconnect the fuel supply line at the fuel rail. Refer to QUICK-CONNECT FITTINGS  .
  12. Disconnect the PCV hose.
  13. Using the sequence shown in illustration, remove the four fuel rail retaining bolts.
  14. Gently rock and lift the left side fuel rail until the fuel injectors just start to clear the machined holes in the intake manifold.
  15. Gently rock and lift the right side fuel rail until the fuel injectors just start to clear the machined holes in the intake manifold. Repeat this procedure (left/right) until all injectors have cleared the machined holes.
  16. Remove the fuel rail (with injectors attached) from the engine.
  17. If the fuel injectors are to be removed. Refer to INJECTOR(S), FUEL, REMOVAL  or INJECTOR(S), FUEL, REMOVAL .