Tools Required
SA9127E-7 Fuel Flow/Pressure Adapter
After it is determined that the fuel system is contaminated, the following procedure to clean it is recommended:
- Place vehicle on hoist and open hood.
- Disconnect negative battery cable.
- Drain fuel tank. (Refer to "Fuel Tank Draining" procedure in this section.)
- Remove fuel tank. (Refer to "Fuel Tank Removal" procedure in this section.)
- Disconnect fuel feed and return line at fuel rail.
- With compressed air, blow out fuel feed and return lines. Catch fuel in a container at opposite end of the line.
- Remove EVAP canister from fuel tank. (Refer to "EVAP Canister Removal" procedure in this section.)
- Remove pump module. (Refer to "Fuel Pump Module Removal" in this section.)
- Inspect inlet filter on pump. If plugged or damaged, fuel pump module must be replaced not serviced separately.
- Flush tank with hot water for at least 6 minutes; invert and drain. All metal chips/debris must be removed from tank prior to installation.
- Install EVAP canister to fuel tank.
- Install fuel pump module to fuel tank using new fuel pump seal. Do not connect fuel feed line to new filter.
- Install fuel tank to vehicle.
- Connect fuel lines to fuel rail.
- Put at least six gallons of clean fuel into fuel tank.
- Connect negative battery cable.
- Connect Scan tool to vehicle and turn ignition On.
- Raise vehicle on hoist and install male quick connect adapter (from SA9127E-7 into fuel feed line.
- Install drain hose to adapter and place other end in an approved container.
- Energize fuel pump with Scan tool for 1 to 2 minutes. (Refer to "Energizing the Fuel Pump" procedure in this section.) This will pump about two quarts of fuel and purge any debris in fuel pump.
- Disconnect fuel drain hose adapter at fuel feed line and connect fuel line to fuel filter.
- Energize fuel pump and check all connections for leaks.
- De-energize pump, lower vehicle, and start engine.
Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.
Caution: Do not allow smoking or the use of open flames in the area where work on the fuel or EVAP system is taking place. Anytime work is being done on the fuel system, disconnect the negative battery cable, except for those tests where battery voltage is required.
Notice: Replace plastic fuel retainer whenever the fuel supply is disconnected at the fuel rail. Install the new retainer into the female cavity of the connection. Care must be taken to assure that the locking tab is centered in the window of the female cavity. Firmly press the female connection onto the male end until a click is heard, then pull back to confirm engagement. Pinched, kinked, or damaged fuel lines must be replaced.
Notice: Replace plastic fuel retainer whenever the fuel supply is disconnected at the fuel rail. Install the new retainer into the female cavity of the connection. Care must be taken to assure that the locking tab is centered in the window of the female cavity. Firmly press the female connection onto the male end until a click is heard, then pull back to confirm engagement. Pinched, kinked, or damaged fuel lines must be replaced.
