I have a 93 bronco w/ a 302. I just hit 150,000 mi, and it's time for me to change the fuel filter.

I tried the other weekend, but there was too much pressure in the fuel line to remove the fuel filter. How do I go about depressurizing the fuel line? My Chilton's guide doesn't say a thing about this.

Thanks,
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«1996 Bronco/F-Series Table of Contents»
«Group 10: FUEL SYSTEM»
«Section 10-01A: Fuel Tank, Filters, Tubes and Electric Fuel Pump, Gasoline Engines»
«SERVICE PROCEDURES»



Fuel System Pressure Relief

1. CAUTION: Fuel supply tubes on 4.9L, 5.0L, 5.8L and 7.5L engines (6007) will remain pressurized for some period of time after the engine is shut off. This pressure must be relieved before servicing the fuel system.

Before opening the fuel system on vehicles, relieve fuel pressure as follows:

Locate and disconnect the electrical connection to either the fuel pump relay, the inertia fuel shutoff switch or the in-line high fuel pump (9350).

2. Crank engine for approximately ten seconds. Engine may start and run for a short time. If so, crank engine an additional five seconds after engine stalls.

3. Connect the electrical connector that was disconnected in Step 1.

4. Note: When the battery (10655) has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module (PCM) (12A650) relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.

Disconnect battery ground cable (14301).

this may help

 

«1996 Bronco/F-Series Table of Contents»
«Group 10: FUEL SYSTEM»
«Section 10-01A: Fuel Tank, Filters, Tubes and Electric Fuel Pump, Gasoline Engines»
«REMOVAL AND INSTALLATION»



Fuel Filter, In-Line

CAUTION:
If the fuel filter (9155) is being serviced with the rear of the vehicle higher than the front, or if the fuel tank (9002) is pressurized, fuel leakage or siphoning from the tank fuel tubes could occur. To prevent this condition, maintain the vehicle front end at or above the level of the rear of vehicle. Also, relieve fuel tank pressure by loosening the fuel fill fuel tank filler cap (9030). Fuel tank filler cap should be retightened after pressure is relieved. Depressurize the fuel tube system at the Schrader valve on the engine fuel injection supply manifold (9F792). If vehicle is warm, change the fuel filter before the pressure rebuilds.


Removal

1. Shut engine (6007) off. Depressurize fuel system. Refer to «Fuel System Pressure Relief» in the Service Procedures portion of this section.

2. Note: When the battery (10655) is disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module (PCM) (12A650) relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.

Disconnect battery ground cable (14301).

3. Raise vehicle on hoist. Refer to «Section 00-02».

4. Remove filter-to-fuel tube retainer clips.

5. Remove push-connect fittings at both ends of the fuel filter as described in «Push-Connect Fittings, Steel» in the Removal and Installation portion of this section.

6. Remove two nuts from filter studs and remove fuel filter bracket (9A335).


Installation

1. Note: Note that the direction of the flow arrow points to the tab of the fuel filter bracket against which the fuel filter rests.

Install fuel filter assembly and two nuts. Tighten nuts to 8-10 N-m (71-89 lb-in).

2. Install push-connect fittings onto fuel filter ends as described in «Push-Connect Fittings, Steel» in the Removal and Installation portion of this section.

3. Snap on filter-to-fuel tube retainer clips. Long legs of clips go onto fuel tubes.

4. Lower vehicle and connect battery ground cable.

5. Turn ignition switch (11572) from OFF to RUN position several times without starting engine. Check for fuel leaks.