Throttle Body Injector: Installation
- Install fuel filter on nozzle end of fuel injector. Ensure large end of filter faces injector so filter covers the raised rib at base of injector. Lubricate small "O" ring with ATF, and push "O" ring on nozzle end of injector until it presses against injector filter.
- Install steel back-up washer in top counterbore of throttle body injector cavity. Lubricate large "O" ring with ATF, and install "O" ring directly over back-up washer. See Figure
. Ensure "O" ring is seated properly in cavity and is flush with top of throttle body casting.CAUTION: Back-up washer and large "O" ring must be installed before injector. Improper seating of "O" ring will cause fuel leak.
- Install "O" ring on injector. Install injector into cavity by aligning raised lug on injector base with cast-in notch of throttle body cavity. Push down on injector until fully seated. Electrical terminals of injector will be approximately parallel with throttle shaft. Install throttle body cover.
- Lubricate new upper and lower "O" rings with engine oil, and place them on injector. Ensure upper ring is in groove and lower ring is flush against filter.
- Position injector in fuel meter assembly, with electrical connector facing cutout for wire grommet.
- Push injector down to seat in cavity. Install injector retainer. Coat injector retainer screw with thread locking compound and install. Tighten screw to 27 INCH lbs. (3.0 N.m).