Central Fuel Injection - CFI

Escort, Lynx, Exp, Tempo, Topaz, Sable & Taurus

To prevent damage to the throttle plates, the fuel charging assembly should be positioned on a suitable stand or pad.

Fig. 16 Fuel charging assembly exploded view.:

Fig. 16b Fuel charging assembly exploded view. 1985 Tempo & Topaz shown, 1986-87 Sable , Taurus, Tempo and Topaz & 1987 Escort, Lynx & EXP similar.:

Disassembly
1. Invert fuel charging assembly and remove four throttle body-to-main body attaching screws, Fig. 16.
2. Separate throttle body from main body, then remove and discard gasket.
3. Carefully remove four fuel pressure regulator attaching screws. Fuel pressure regulator cover is spring loaded. Apply downward pressure to regulator when removing attaching screws to prevent personal injury.
4. Remove cover assembly, cup, spring and diaphragm.
5. Remove regulator valve seat, then the fuel injector retaining screw and retainer.
6. Remove injector assembly and O-ring.
7. Remove fuel fittings and filter screen from fuel inlet channel.
8. Remove TPS attaching screws and the TPS from throttle body.
9. Remove ISC motor and bracket assembly from throttle body. Remove ISC motor from bracket, if necessary.

Fuel Charging Assembly:

Assembly

Intake manifold cracks at the fuel charging assembly mounting flange may be caused by overtightening of the retaining bolts at the time of installation. To prevent cracking of the mounting flange, use the following revised service procedure:
1. Clean the mounting surface and position a new gasket on the intake manifold.
2. Apply two drops of Loctite Threadlocker 242 Liquid on the long threaded end of bolts; approximately the last 6 to 8 threads.
3. Snug bolts #1, #2, and #3 by hand while centering the CFI throttle body on the spacer, Fig. 11.
4. First, tighten bolt #1, then #2, then #3f to 8 +/- 2 lbs. ft. (11 +/- 4 Nm).
5. Then tighten bolt #1, then #2, then #3 to 16 +/- 2 lbs. ft. (22 +/- 4 Nm).
6. Reconnect the electrical connectors to ISC, throttle position sensor, and fuel injector.
7. Reconnect the fuel inlet and outlet connections, and connect the PCV vacuum line at fuel charging assembly.
8. Reconnect throttle cable and transmission throttle valve lever.
9. Reconnect electrical connector at inertia switch.
10. Install air tube and clamp at fuel charging assembly.
11. Start engine and check for leaks. Check idle speed and reset to specification if necessary.