Expedition 4WD V8-4.6L SOHC VIN W (1999)
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If the fuel line has a build date code of August 22 ( H 22) or later, no service action is required. Return the vehicle to the customer.
SERVICE PROCEDURE
1.
Open the hood.
2.
Remove the jack handle from the radiator support.
WARNING:
FUEL IN THE FUEL SYSTEM REMAINS UNDER HIGH PRESSURE EVEN WHEN THE ENGINE IS NOT RUNNING. BEFORE
SERVICING OR DISCONNECTING ANY OF THE FUEL LINES OR FUEL SYSTEM COMPONENTS, THE FUEL SYSTEM PRESSURE
MUST BE RELIEVED TO PREVENT ACCIDENTAL SPRAYING OF FUEL, CAUSING PERSONAL INJURY OR A FIRE HAZARD.
3.
Relieve fuel system pressure as follows:
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Remove the schrader valve cap and attach the EFI/CFI fuel pressure gauge.
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Slowly open the manual valve on EFI/CFI fuel pressure gauge to relieve the fuel pressure.
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Remove the fuel pressure gauge and reinstall the schrader valve.
4.
Turn off the air suspension switch, located under the right side of the instrument panel, if equipped.
5.
Install the memory saver, then disconnect the battery negative cable.
6.
Disconnect both of the fuel lines from the fuel manifold.
7.
Raise and support the vehicle.
8.
Completely drain the fuel tank into appropriate container.
9.
On 4 x 4 models, remove the transfer case skid plate, if equipped.
10.
On 4 x 4 models, reposition the front driveshaft as follows:
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Place an alignment mark on the driveshaft mounting flange and front axle flange.
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Remove the driveshaft mounting flange retaining bolts.
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Swing the driveshaft down and under the engine oil pan. This will allow access to the front fuel line clip.
11.
On 4 x 4 models equipped with 4.6L engines, remove the CMS sensor Christmas tree fastener from the bracket at the rear of the transmission.
12.
Disconnect the front fuel return line from the rear fuel return line. Connection is located near the fuel filter.
13.
Disconnect the front fuel supply line from the fuel filter.
