3B - 18 Fuel Metering System 6.0L
MEFI 4 - PCM
Fuel Control Cell (FCC) - Screw On Bowl -
Element Replacement (With Engine OFF)
1. Disconnect the two-wire electrical harness.
2. Hold the 3/4” jam nut located at the bottom of the FCC
bowl with a wrench, remove the 3/16” allen plug and
drain bowl contents into a suitable container.
Caution: Both fuel, which is explosive, and water will
drain from the FCC bowl.
3. Using a strap type oil fi lter wrench, remove the bowl
by turning it counterclockwise as viewed from the
bottom.
4. Slide bowl downward over the suspended fi lter element.
It may be necessary to pull the unit to one side or
remove the fuel line from the feed pump to remove
the bowl.
5. Remove the fuel fi lter element from the suspended
pump by gripping the fuel pump with one hand and
pulling the fi lter downward with the other hand.
6. Push on new fi lter element over the electric pump.
7. Using a pick made of soft material, such as a toothpick,
remove the old “O”-ring from inside the FCC bowl
mounting head.
Caution: The mounting head “O”-ring groove may
be damaged by using a sharp tool to remove this
“O”-ring.
8. Lubricate the new “O”-ring with a light grease and
install the new “O”-ring in the FCC head.
9. Grease taper and threads on the bowl and, by hand,
thread the bowl into the FCC mounting head. Tighten
the bowl fi rmly back into the head with an oil fi lter
wrench.
10. Apply pipe sealant suitable with gasoline to the 3/16”
allen plug.
11. Install and tighten the 3/16” allen plug while holding
the 3/4” jam nut with a wrench.
12. Re-connect the two-wire electrical harness.
Inspect
•
Turn ignition switch to the “ON” position for 2 seconds,
then turn to the “OFF” position for 10 seconds. Cycle
the ignition several times to fi ll the FCC bowl. Turn the
ignition switch back to the “ON” position and check
for fuel leaks.
Fuel Control Cell (FCC) - Screw On Bowl -
Drain Water (With Engine OFF)
1. Disconnect the two-wire electrical harness.
2. Hold the 3/4” jam nut located at the bottom of the FCC
bowl with a wrench, remove the 3/16” allen plug and
drain bowl contents into a suitable container.
Caution: Both fuel, which is explosive, and water will
drain from the FCC bowl.
3. Apply pipe sealant suitable for use with gasoline to the
threads fo the 3/16” allen plug.
4. Tighten the 3/16” allen plug while holding the 3/4” jam
nut with a wrench.
5. Re-connect the two-wire electrical harness.
Inspect
•
Turn ignition switch to the “ON” position for 2 seconds,
then turn to the “OFF” position for 10 seconds. Cycle
the ignition several times to fi ll the FCC bowl. Turn the
ignition switch back to the “ON” position and check
for fuel leaks.
FUEL
DRAIN
FUEL
BOWL
FUEL
FILTER
FUEL
PUMP
FUEL
PRESSURE
REGULATOR
"O"- RING
FUEL
PUMP
OR
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