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Home >> Jeep >> 2007 >> Liberty Limited, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System >> Fuel Delivery - Diesel >> Standard Procedure >> Priming Fuel System

Priming Fuel System

Fig 1: Fuel System Primer
GC0025673Courtesy of CHRYSLER LLC
1 - FUEL FILTER AND HOUSING ASSEMBLY
2 - PRIMER BUTTON
CAUTION: Cranking the engine for an extended period with out a fuel supply may result in damage to the high pressure fuel pump. DO NOT force the plunger when priming the fuel system. Damage to the plunger or fuel filter/water separate will result.
NOTE: Should the vehicle run out of fuel, the fuel system must be re-primed in order to start. Factors such as temperature, how long the vehicle has been sitting, and engine cranking speed will influence how quickly the engine starts. If the water in fuel light is illuminated in the instrument panel, refer to the WATER-IN-FUEL (WIF) SENSOR  for draining procedure.

The fuel system must be primed if the fuel system has been serviced. This is done using the fuel primer button located at the top of the fuel filter/water separator.

  1. With service completed on the fuel system.
  2. Depress the fuel primer (2) 20 consecutive times then open the bleeder screw on top of the housing to dispel trapped air. See Fig 1.
  3. Close the bleeder screw and continue the step above until the primer button becomes slightly harder to depress.
  4. Turn the ignition to START and crank the engine a maximum of ten seconds.
    NOTE: If the engine does not start with in ten seconds, repeat the priming procedure. The engine will typically start within ten seconds; the engine may idle, idle rough, or stall, purging any trapped air from the lines and filter.
  5. Tighten bleeder screw to 10.8 N.m (96 in. lbs.).