Honda Civic. Manual — part 675

Fig. 74: Identifying Floor Cover With Torque Specifications

3. Loosen the sealing bolt (A) on the fuel joint block slowly.

Fig. 75: Identifying Sealing Bolt And Fuel Stem With Torque
Specifications

4. Turn the fuel stem assembly (B) 1/2-1 turn counterclockwise.
5. Replace the fuel stem assembly and sealing bolt O-ring (C).

AT THE FUEL TANK

NOTE:

This procedure degrades the integrity of the fuel tank. Do it
only if you are replacing the fuel tank.

2008 Honda Civic GX

2006-08 ENGINE PERFORMANCE Fuel Supply System - Civic GX

1. Lift the vehicle and support it with jackstands.
2. Close the manual shut-off valve (A).

Fig. 76: Identifying Manual Shut-Off Valve

3. Start the engine, and let it idle. After a few minutes, the engine will stall.
4. Turn the ignition switch OFF, and disconnect the negative cable from the

battery.

5. Connect a ground wire (A) (available from AH special tools department) to the

fuel line to eliminate any static electricity.

Fig. 77: Identifying Ground Wire, Fuel Supply Pipe And Fuel Pressure
Regulator P1

6. Disconnect the fuel supply pipe (B) from fuel pressure regulator P1 (C). Be

careful not to lose the O-rings.

2008 Honda Civic GX

2006-08 ENGINE PERFORMANCE Fuel Supply System - Civic GX

7. Connect the vent tube to the fuel supply pipe.
8. Secure the other end of the vent tube to the highest possible location.
9. Remove the fuel pipe duct, and slowly remove the manual lock-down valve

(A). Install the manual override vent tool (B) (available from AH special tools
department) in its place.

Fig. 78: Identifying Manual Lock-Down Valve, Manual Override Vent
Tool With Torque Specifications

10. Slowly turn the tool's Allen bolt clockwise until it stops. This opens the line

between the fuel tank and the manual shut-off valve.

11. Open the manual shut-off valve so fuel can vent from the fuel tank. The fuel

tank is empty when the hissing sound goes away.

12. Remove the manual override vent tool.

FUEL LINE INSPECTION

Check the fuel system lines, hoses, fuel filter, and other components for damage,
leaks, and deterioration, and replace them if necessary.

NOTE:

Always use two wrenches when removing or installing
the fuel pipe nut (see FUEL LINE INSPECTION ).

NOTE:

When installing a new O-ring, apply silicone oil or
polyalkyleneglycol (PAG) oil to the O-ring, and carefully

2008 Honda Civic GX

2006-08 ENGINE PERFORMANCE Fuel Supply System - Civic GX

Fig. 79: Identifying Fuel Line Nuts With Torque Specifications

install it into its proper position.

NOTE:

Check all hose clamps and retighten them if necessary.

* 1: Apply silicone grease (PARKER CHRISTO-LUBE) to a
new O-ring at the fuel filter housing and drain plug, and
carefully install it into its proper position.

2008 Honda Civic GX

2006-08 ENGINE PERFORMANCE Fuel Supply System - Civic GX