Electronic Fuel Injection - EFI
REMOVALAir Cleaner Assembly:
1. Disconnect engine air cleaner outlet tube from throttle body.
2. Unplug Throttle Position Sensor from wiring harness.
3. Disconnect vacuum lines from upper manifold.
EGR Mounting Flange:
4. Disconnect EGR tube at manifold connection.
5. Unplug Air Bypass Valve connector.
6. Remove accelerator cable and speed control cable.
Upper Intake Manifold Support Bracket:
7. Remove upper manifold support bracket top bolt.
8. Remove fuel supply manifold.
9. Remove four upper manifold retaining pivots and one retaining shoulder stud.
10. Remove upper manifold assembly and set it aside.
11. Remove and discard the gasket from the lower manifold assembly.
NOTE: If scraping is necessary, be careful not to damage gasket surfaces of upper and lower manifold assemblies, or allow material to drop into lower manifold.
INSTALLATION
Intake Manifold:
1. Ensure that gasket surfaces of upper and lower intake manifolds are clean.
2. Place a new gasket on lower manifold assembly and mount upper intake manifold to lower, securing it with five retaining bolts. Tighten bolts to 15-22 lb. ft. (20-30 N-m).
3. Reconnect manifold upper support bracket. Tighten bolts to 15-22 lb. ft. (20-30 N-m).
4. Reconnect EGR tube with oil coated compress nut. Tighten to 29-40 lb. ft. (40-55 N-m).
5. Connect electrical connectors to Air Bypass Valve and Throttle Position Sensor, and vacuum hoses to upper manifold.
6. Connect engine air cleaner outlet tube to throttle body intake securing it with a hose clamp. Tighten to 23-30 lb. in. (2.5-3.4 N-m).