Honda Civic. Manual — part 791

Fig. 24: Identifying Engine Cover

3. Remove the vacuum hose (A) and breather pipe (B), then remove the air intake

duct (C).

Fig. 25: Identifying Air Intake Duct

4. Remove the engine wire harness connectors and wire harness clamps from the

intake manifold.

Four fuel injector connectors

Manifold absolute pressure (MAP) sensor connector

Throttle actuator connector

2008 Honda Civic GX

2006-08 ENGINE Intake Manifold and Exhaust System - Civic (Except Hybrid)

5. Remove the ground cable (A) and harness clamp bracket (B), then remove the

harness holder (C) from the stay.

Fig. 26: Identifying Ground Cable, Harness Clamp Bracket And Harness
Holder

6. Remove the positive crankcase ventilation (PCV) hose (A), evaporative

emission (EVAP) canister hose (B) and brake booster vacuum hose (C).

Fig. 27: Identifying Positive Crankcase Ventilation Hose

7. Remove the water bypass hoses, then plug the water bypass hoses.

2008 Honda Civic GX

2006-08 ENGINE Intake Manifold and Exhaust System - Civic (Except Hybrid)

Fig. 28: Identifying Water Bypass Hoses

8. Remove the quick-connect fitting cover (A), then disconnect the fuel feed hose

(see FUEL LINE/QUICK-CONNECT FITTING REMOVAL ).

Fig. 29: Identifying Quick-Connect Fitting Cover

9. Raise the vehicle on the lift to full height.

10. Remove the connector (A), then remove the intake manifold bracket (B).

2008 Honda Civic GX

2006-08 ENGINE Intake Manifold and Exhaust System - Civic (Except Hybrid)

Fig. 30: Identifying Intake Manifold Bracket

11. Lower the vehicle on the lift.
12. Remove the intake manifold (A) from the cylinder head, then remove the water

bypass hose (B).

Fig. 31: Identifying Intake Manifold

Installation

1. Install the water bypass hose (A) to the intake manifold (B), then install the

intake manifold with a new gasket (C), and tighten the bolts and nuts in a
crisscross pattern in two or three steps, beginning with the inner bolt.

2008 Honda Civic GX

2006-08 ENGINE Intake Manifold and Exhaust System - Civic (Except Hybrid)