Jeep Wagoneer/Commando/Cherokee 1984-1998

Fuel Filter

Print

Removal & Installation



Carbureted Engines
2.5L ENGINES

See Figure 1

  1. Remove and discard the fuel filter, hoses and clamps.
  2.  
  3. Install the new fuel filter with arrows on the casing pointing toward the carburetor and fuel return nipple facing upward.
  4.  
  5. Secure the filter with new hoses and clamps.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Fuel flow on the 2.5L carbureted engine fuel filter

2.8L ENGINES

See Figure 2

  1. Remove the air cleaner assembly to gain access to the carburetor inlet nut.
  2.  
  3. Clean all debris away from the manifold and place rags below the fuel line and inlet nut to absorb any fuel spillage.
  4.  
  5. Hold the large inlet nut with a wrench and loosen the fuel line fitting with a flare nut wrench. (This wrench is designed to prevent stripping of the fuel line fitting).
  6.  
  7. Pull the fuel pipe from the carburetor and catch any fuel with a clean rag. Next, unscrew the large nut. There is a spring behind the nut, so be careful. Remove the spring and the old filter.
  8.  

To install:
  1. Install the new filter and, if you are at all in doubt about its condition, a new gasket behind the inlet nut.
  2.  
  3. Tighten the inlet nut carefully, because the carburetor is made of very soft metal and the threads could EASILY strip. Hold the inlet nut securely while tightening the fuel line fitting.
  4.  
  5. Start the vehicle and check for leaks.
  6.  



Click image to see an enlarged view

Fig. Fig. 2: The fuel filter on the 2.8L engine in located in the inlet nut

Gasoline Fuel Injection Engines
EXCEPT 1997-98 ENGINES

See Figures 3 and 4

The fuel filter is located under the vehicle, mounted on the frame rail on the driver's side.

  1. Disconnect the battery ground cable.
  2.  
  3. Remove the fuel tank filler cap.
  4.  


CAUTION
Don't allow fuel to spray or spill on the engine or exhaust manifold! Place heavy shop towels under the pressure port to absorb any escaped fuel! Do not smoke while working near fuel vapors.



Click image to see an enlarged view

Fig. Fig. 3: Remove the hoses and clamps from the filter



Click image to see an enlarged view

Fig. Fig. 4: Remove the filter strap bolt and then remove the filter

  1. Relieve the fuel system pressure. Refer to Fuel System for the proper procedure.
  2.  
  3. Raise and safely support the rear end on jackstands.
  4.  
  5. Remove the hoses and clamps from the filter.
  6.  
  7. Remove the filter strap bolt and remove the filter.
  8.  

To install:

The filter is marked for installation. IN goes towards the fuel tank OUT towards the engine.

  1. Place the new filter on the frame rail and tighten the strap bolt to 106 inch lbs. (12 Nm).
  2.  
  3. Install and securely clamp the hoses.
  4.  
  5. Lower the vehicle and connect the negative battery cable.
  6.  
  7. Start the vehicle and check for leaks.
  8.  

1997-98 ENGINES

See Figures 5, 6 and 7


CAUTION
Observe all applicable safety precautions when working around fuel. Whenever servicing the fuel system, always work in a well ventilated area. Do not allow fuel spray or vapors to come in contact with a spark or open flame. Keep a dry chemical fire extinguisher near the work area. Always keep fuel in a container specifically designed for fuel storage; also, always properly seal fuel containers to avoid the possibility of fire or explosion.

The fuel filter is an integral component of the fuel pressure regulator, which is mounted on top of the fuel pump module, located in the fuel tank. When the fuel filter/regulator assembly requires service, the fuel tank must be removed from the vehicle, however, the fuel pump module does not need to be removed.

  1. Disconnect the battery ground cable.
  2.  
  3. Relieve the fuel system pressure. Refer to Fuel System for the proper procedure.
  4.  
  5. Remove the fuel tank assembly.
  6.  
  7. Clean the area around the fuel filter/regulator.
  8.  



Click image to see an enlarged view

Fig. Fig. 5: Remove the fuel filter/pressure regulator retaining clip from the top of the assembly



Click image to see an enlarged view