Remove a fuel filter

The fuel filter is located under the rear seat.
Fuel Filter Replacement:

1. Reduce the internal pressure of the fuel lines and hoses by completing the following operations:
   • After removing the rear seat cushion, disconnect the fuel pump harness.
   • Start the engine. Allow it to stop by itself, then turn the ignition switch OFF .
   • Disconnect the battery negative (-) terminal.
   • Connect the fuel pump harness connector.
   
   
2. Remove the eye bolts while holding the fuel filter nuts securely.
3. CAUTION: Cover the fuel filter with a shop towel to avoid residual gasoline from splashing.
4. Remove the fuel filter mounting bolts, then remove the fuel filter from the fuel filter clamp.
5. After replacing the fuel filter, check for fuel leaks.

Fuel Filter REMOVAL & INSTALLATION CAUTION
NEVER SMOKE WHEN WORKING AROUND OR NEAR GASOLINE! MAKE SURE THAT THERE IS NO ACTIVE IGNITION SOURCE NEAR YOUR WORK AREA! 1970-83 Carbureted Engines The fuel filter is located on the right inner fender in the engine compartment. It is a disposable cartridge type.

1. Using a pair of pliers, expand the hose clamp on one side of the filter, and slide the clamp further down the hose, past the point to which the filter pipe extends. Remove the other clamp in the same manner.
2. Grasp the hoses near the ends and twist them gently to pull them free from the filter pipes.
3. Pull the filter from the clip and discard.
4. Install the new filter into the clip. Push the hoses onto the filter pipes, and slide the clamps back into position. Start the engine and check for leaks. Fig. 1: Fuel filter - 1970-79
   Fig. 2: Fuel filter - 1980-83
   

1984-86 Carbureted Engines The fuel filter is located on the inside of the frame above the left rear spring front shackle. Changing the filter is VERY awkward. Since it is in-line and below tank level, fuel will pour from the fuel lines when they are disconnected from the filter. The only way of preventing this, is to siphon all of the gasoline from the tank before replacing the filter. Another possible method is to clamp and plug the fuel line, but this is not recommended because of the danger of leaking fuel or damage which could occur to the fuel line when clamped. It would, therefore, be a good idea to run the tank almost dry before changing the filter. Once the tank is dry, disconnect the fuel lines at the filter, unbolt the old filter and install a new one. Reconnect the fuel lines, fill the tank, start the engine and check for leaks. Fig. 3: Fuel filter - 1984-86
Fig. 4: Remove the shield mounting bolts
Fig. 5: Remove the shield, if necessary for fuel filter removal
Fig. 6: Removing fuel filter - always replace fuel line clamps
Fuel Injected Engines WARNING
Never attempt to remove the fuel filter without first relieving the fuel system pressure!

1. Release the fuel pressure from the fuel line as follows:
   1. Remove the fuel pump fuse at the fuse box.
   2. Start the engine.
   3. After the engine stalls, crank the engine two or three times to make sure that the fuel pressure is released.
   4. Turn the ignition switch OFF and reinstall the fuel pump fuse.
2. Loosen the hose clamps at the fuel inlet and outlet lines then slide each line off the filter nipples.
3. Remove the fuel filter.
4. Replace the fuel filter. Always be sure to use new hose clamps. Fig. 7: Fuel filter - 1986-88 VG30i
   Fig. 8: Fuel filter - 1986-88 Z24i
   

Try a fuel filter:
Fuel Filter REMOVAL & INSTALLATION The in-line fuel filter is located in the engine compartment between the fuel tank and the fuel rail.

1. Properly relieve the fuel system pressure.
2. Disconnect the negative battery cable.
3. Position a suitable container below the fuel filter to collect any excess fuel that may leak from the filter and lines. 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.
   
4. Remove the retaining clip from the fuel filter upper hose.
5. Disconnect the upper hose from the fuel filter and drain any excess fuel into the container. Plug the hose.
6. Raise and safely support the vehicle.
7. Remove the retaining clip from the fuel filter lower hose.
8. Disconnect the lower hose from the fuel filter and drain any excess fuel into the container. Plug the hose.
9. Lower the vehicle.
10. Unfasten the filter retaining clamp screw and remove the fuel filter. Fig. 1: The fuel filter is located in the engine compartment, between the fuel tank and fuel rail — 1.9L engine's underside shown
    Fig. 2: To remove the fuel filter upper hose clip, grasp the clip (arrow) . . .
    Fig. 3: . . . and gently pull the clip from the hose. (Lower hose clip removal is similar)
    Fig. 4: Grasp the hose and pull it from the fuel filter
    Fig. 5: Unfasten the filter retaining clamp screw
    Fig. 6: Grasp the filter and remove it from the vehicle
    To install:
    
11. Position the fuel filter and tighten the filter mounting clamp.
12. Remove the plug, then connect the upper hose to the filter and install the hose retaining clip.
13. Raise and safely support the vehicle.
14. Remove the plug, connect the lower hose to the filter and install the hose retaining clip.
15. Lower the vehicle.
16. Connect the negative battery cable.
17. Start the engine and check for leaks.

Fuel Filter Removal & Installation 2002-2004 To Remove:
NOTE: If a fuel filter is restricted, clean and inspect the inside of the fuel tank.

1. Relieve the pressure in the fuel system.
2. Lift the vehicle.
3. If necessary, remove the fuel tank shield from the frame.
4. Make sure the fuel pipe and hose connections, as well as the surrounding areas, are clean.
5. Disconnect the fuel pipes from the fuel filter; keep the retaining clips with the filter.
6. To avoid fuel loss and fuel system contamination, cap off the fuel pipes. Fuel filter removal and installation
   
   
7. Remove the screw from the fuel filter bracket.
8. Remove the fuel filter from the fuel filter bracket.

To Install:

1. Install the fuel filter into the fuel filter bracket.
2. For vehicles with a 4.2L engine, install the screw into the fuel filter bracket. Torque the screw to 13 in-lb (1.5 Nm).
3. For vehicles with a 5.3L engine, install the screw into the fuel filter bracket. Torque the screw to 106 in-lb (12 Nm).
4. Uncap the fuel pipes.
5. Connect the fuel pipes to the fuel filter.
6. Turn on the ignition for 2 seconds, with the engine off, and then turn off the ignition. After 10 seconds, turn the ignition back on with the engine off.
7. Check for leaks in the fuel lines.
8. Lift the vehicle.
9. If previously removed, install the fuel tank shield to the frame.
10. Lower the vehicle.

FIRST YOU NEED A SUITABLE CONTAINER.PLACE UNDER FILTER DRAIN HOSE OPEN THE FILTER DRAIN.NOW YOU HAVE TO REMOVE THE TURBOCHARGER ASSEMBLY.REMOVE THE THE BAFFLE AND THE AIR INLET CROSSOVER MANIFOLD.REMOVE THE TWO CAPSCREWS SECURING THE FUEL FILTER BASE TO THE CRANLCASE.DISCONNECT THE WATER DRAIN HOSE FROM FILTER. DISCONNECT THE FUEL OUTLET HOSE LOCATED BETWEEN THE FUEL AND FILTER HOUSING.AND THE FUEL RETURN HOSE FROM THE FUEL PRESSURE REGULATOR VALVE.DISCONNECT THE TWO FUELSUPPLY HOSES THAT CONNECT THE REGULATOR BLOCK TO THE CYLINDER FUEL RAILS.LOOSEN THE CLAMP AT THE FUEL PUMP END OF THE HOSE WHICH CONNECTS THE FUEL FILTER TO THE INLET OF HIGH PRESSURE STAGE AT THE FUEL PUMP.DISENGAGE THE WIRING HARNESS FROM THE RIGHT SIDE OF THE FILTER HOUSING.DISENGAGE THE ELECTRICAL CONNECTIONS FROM THE WATER IN FUEL SENSOR AND THE FUEL HEATER.REMOVE THE FUEL FILTER.USE A PRYBAR TO REMOVE THE FUEL FILTER CAP AND THE FILTER ELEMENT WILL COME OUT WITH THE CAP.DEPRESS THE ELEMENT LOCKING TABS AND REMOVE THE ELEMENT FROM THE CAP.TO INSTALL CLEAN THE MATING SURFACES AND INSTALL THE FILTER ELEMENT ONTO THE CAP MAKING SURE THE TABS ENGAGE.INSTALL THE FILTER CAP AND PRESS DOWN FIRMLY BUT GENTLY TO ENGAGE IT.ENGAGE THE WIRING CONNECTIONS TO THE FUEL HEATER AND WIF SENSOR.ENGAGE THE WIRING HARNESS TO THE FILTER HOUSING.TIGHTEN THE CLAMP AT THE FUEL PUMP END OF HOSE WHICH CONNECTS THE FUEL FILTER TO THE INLET OF HIGH PRESSURE STAGE AT THE FUEL PUMP.ENGAGE THE TWO FUEL SUPPLY HOSES THAT CONNECT THE REGULATOR BLOCK TO THE CYLINDER HEAD FUEL RAILS.CONNECT THE FUEL OUTLET HOSE LOCATED BETWEEN THE FUEL AND FILTER HOUSING AND THE FUEL RETURN HOSE FROM THE FUEL PRESSURE REGULATOR VALVE.CONNECT THE WATER DRAIN HOSE TO THE FILTER.INSTALL THE 2 CAP SCREWS SECURING THE FUEL FILTER BASE TO THE CRANKCASE.INSTALL THE AIR INLET CROSSOVER MANIFOLD AND BAFFLE.INSTALL THE TURBOCHARGER ASSEMBLY.

1. Disconnect the battery ground cable.
2. Properly relieve the fuel system pressure.
3. Raise the vehicle on a hoist.
4. Remove the bolts and the fuel filter heat shield.
5. Remove the nuts and the fuel filter shield.
6. Disconnect the quick release and spring lock couplings and remove the fuel filter.
   

To install:

1. Remove any fuel line caps.
2. Install the new fuel filter, connecting the quick-release and spring-lock couplings.
3. Install the fuel filter shield.
4. Install the fuel filter heat shield. Torque the bolts to 15 ft. lbs. (20 Nm).
5. Reconnect the battery ground cable.
6. Lower the vehicle.
7. Start the vehicle, check for leaks and repair if necessary.

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Fuel Filter Removal and Installation

1. Relieve the fuel pressure. For additional information, refer to Section 310-00 .

1. Raise the vehicle on a hoist. For additional information, refer to Section 100-02 .

1. Remove the fuel filter shield.
   1. Remove the nuts.
   1. Remove the shield.

1. Remove the fuel filter (9155).
   1. Disconnect the fuel lines. For additional information, refer to Section 310-00 .
   1. Remove the fuel filter from the fuel filter support
   

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It's unde the hood, on the firewall, on the driver side.

Fuel Filters In-Tank
Removal and Installation
The in-tank fuel pump filter is not serviced separately. To service the fuel pump filter, replace the fuel pump (9350). Refer to the procedure in this section. In-Line
Removal
The following illustration is an exploded view of the fuel filter (9155).


Item Part Number Description 1 9K299 Fuel Filter Upper Hose 2 9A335 Fuel Filter Bracket 3 — Fuel Hose Clamp 4 9C323 Fuel Filter Lower Hose 5 9155 Fuel Filter 6 — Fuel Hose Clamps

1. Relieve the fuel system pressure. Refer to the procedure in this section.
   

1. Remove the fuel hose clamps.
   

1. Disconnect the upper and lower fuel filter hoses from both ends of the fuel filter. Plug the fuel hoses to prevent leakage and contamination.
   

1. Remove the fuel filter from the fuel filter bracket (9A335).
   

On these vehicles, the fuel filter is located on the fuel line to the carburetor. Special care should be taken when removing and installing the fuel filter, not to bend or distort the fuel line in any way.

1. Remove gas cap to relieve any pressure that may be present in the fuel system.
2. Remove the air cleaner bonnet assembly.
3. Using a backup wrench on the return line fitting on the top of the fuel filter, remove the fuel line with a flare nut wrench.
4. Using a backup wrench on the fuel filter inlet fitting, remove the fuel line from the fuel filter with a flare nut wrench.
5. Using a backup wrench on the fuel filter outlet fitting, loosen the fuel line and remove the fuel filter from the engine with a flare nut wrench.

To Install:

1. Apply a drop of engine oil to all the fuel line nuts and flared ends.
2. Position the fuel filter with flow arrow on the filter directed towards the fuel line going to the carburetor.
3. Finger-tighten the fittings at the fuel filter outlet, inlet and return line into the top of the filter.
4. Using a backup wrench on the fuel filter fittings, tighten the fuel lines in the following sequence:
   1. Tighten the outlet and inlet line nuts to 15-18 ft. lbs. (20.0-24.0 Nm)
   2. Tighten the nut on the return line at the top of the filter to 6-9 ft. lbs. (15-18 Nm).
5. Inspect the fuel lines and carefully adjust if they are interfering with the carburetor, air pump, or fuel filter housing.
6. Start the engine and check for fuel leaks at all the connections. Retighten if necessary.
7. If removed, install the air filter bonnet assembly.

FUEL FILTER REPLACEMENT
1. Reduce the internal pressure of the fuel pipes and hoses by completing the following operations. (1)
Disconnect the fuel pump harness after removing the rear seat cushion. (2)
Start the engine and after it stalls, turn the ignition switch OFF. (3)
Disconnect the battery negative (-) terminal.
(4)
Connect the fuel pump harness connector

2. Remove the bolt connecting the fuel line with the fuel filter. Cover with a shop towel to avoid gasoline from splashing. 3. Remove the fuel filter mounting bolt, then remove the fuel filter from the fuel filter clamp. 4. After replacing the fuel filter, check for fuel leaks.