With TBI Model 220

Injector Removal (TBI 220):

Fuel Injector (TBI 220):

Injector ID (TBI 220):

Installing Fuel Injector (TBI 220):

CAUTION: Use care in removing the fuel injectors to prevent damage to the electrical connector terminals, the injector filter, and the fuel nozzle. The fuel injector is serviced as a complete assembly only. Also, since the injectors are electrical components, they should not be immersed in any type of liquid solvent or cleaner as damage may occur.

REMOVE OR DISCONNECT
1. Electrical connectors to fuel injectors. (Squeeze plastic tabs and pull straight up.)
2. Fuel meter cover assembly. Refer to Throttle Body.
3. With fuel meter cover gasket in place to prevent damage to casting, use a screwdriver and fulcrum to carefully lift out each injector.
4. Lower (small) O-rings from nozzle of injectors and discard.
5. Fuel meter cover gasket and discard.
6. Upper (large) O-Rings and steel backup washers from top of fuel injector cavity and discard.

Inspect
Fuel injector filter for evidence of dirt and contamination. If present, check for presence of dirt in fuel lines and fuel tank.

NOTE: Be sure to replace the injector with one having an identical part number. Injectors from other models can also fit in TBI model 220, but are calibrated for different flow rates. See Application and ID.

INSTALL OR CONNECT
1. Lubricate new lower (small) O-Rings with automatic transmission fluid and push on nozzle end of injector until it presses against injector fuel filter.
2. Steel injector backup washer in counterbore of fuel meter body.
3. Lubricate new upper (large) O-Ring with automatic transmission fluid and install directly over the backup washer. Be sure O-Ring is seated properly and is flush with top of fuel meter body surface.

NOTE: Backup washers and O-Rings must be installed before injectors, or improper seating of large O-Ring could cause fuel to leak.

4. Injector, aligning raised lug on each injector base with notch in fuel meter body cavity. Push down on injector until it is fully seated in fuel meter body. (Electrical terminals of injector should be parallel with throttle shaft.)

NOTE: Be sure to install the injectors in their proper location.

5. Fuel meter cover gasket.
6. Fuel meter cover. See Throttle body.
7. Electrical connectors to fuel injectors.
8. With engine "OFF" and ignition "ON," check for fuel leaks.