Honda Civic manuals

Honda Civic Service Manual: Fuel Pressure Regulator Removal and Installation (R18Z1)

Honda Civic Service Manual / Powertrain / Engine / Fuel System / Fuel Pressure Regulator Removal and Installation (R18Z1)

121135

Removal

1. Fuel Filler Cap

1.

Remove the fuel fill cap to relieve the pressure in the fuel tank.


2. HDS DLC - Connection


NOTE: For specific operations, refer to the user's manual that came with the Honda Diagnostic System (HDS). Make sure the HDS is loaded with the latest software.


1.

Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.


2.

Turn the ignition switch to ON (II).


3.

Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.


3. Fuel Pump Off

1.

Turn the ignition switch to ON (II).


2.

From the INSPECTION MENU of the HDS, select Fuel Pump OFF, then start the engine, and let it idle until it stalls.


NOTE:

Do not allow the engine to idle above 1,000 rpm or the ECM/PCM will continue to operate the fuel pump.

Pending or Confirmed DTC may be set during this procedure. Check for DTCs, and clear them as needed.


3.

Turn the ignition switch to LOCK (0).


4. Battery Terminal - Disconnection


1.

Make sure the ignition switch is in LOCK (0).


2.

Disconnect and isolate the negative cable and battery sensor (A) from the battery.


NOTE: Always disconnect the negative side first.


3.

Disconnect the positive cable (B) from the battery.


5. Fuel Pressure - Relieving


1.

Remove the quick-connect fitting cover (A).


2.

Check the fuel quick-connect fitting for dirt, and clean it if needed.


3.

Place a rag or shop towel over the quick-connect fitting (A).


4.

Disconnect the quick-connect fitting: Hold the connector (A) with one hand, and squeeze the retainer tabs (B) with the other hand to release them from the locking tabs (C). Pull the connector off.


NOTE:

Be careful not to damage the line (D) or other parts.

Do not use tools.

If the connector does not move, keep the retainer tabs pressed down, and alternately pull and push the connector until it comes off easily.

Do not remove the retainer from the line; once removed, the retainer must be replaced with a new one.


6. Rear Seat Cushion

1.

Remove the bolt (A) securing the rear seat cushion (B).



2.

While pushing down the rear seat cushion (A), pull the seat hook handles (B) to release the hooks (C).


3.

Remove the rear seat cushion.


7. Trunk Floor Cover


1.

Fold down the seat-back(s).


2.

Remove the front area of the trunk floor cover (A).


3.

Remove the trunk floor cover (A).


8. Right Rear Seat-Back - Split Fold Down

1.

Remove the right rear seat-back (A).


9. Center Pivot Bracket - Split Fold Down


1.

Remove the center pivot bracket (A).


2.

If necessary, remove the bushing (B).


10. Left Rear Seat-Back - Split Fold Down

1.

Remove the bolt (A) securing the left rear seat-back (B).


2.

Extend the center seat belt (A), then remove the left rear seat-back (B).


11. Rear Floor Upper Cross-Member

1.

Remove the rear floor upper cross-member (A).


12. Fuel Gauge Sending Unit Access Panel


1.

Remove the access panel (A) from the floor.


2.

Disconnect the connector (B).


13. Fuel Tank Unit

1.

Using the special tool, loosen the locknut (A).



2.

Remove the locknut (A).


3.

Remove the fuel tank unit (B).


14. Fuel Pressure Regulator


1.

Remove the bracket (A).


2.

Remove the fuel pressure regulator (B) and the ring (C).


Installation

1. Fuel Pressure Regulator


1.

Install the fuel pressure regulator (A) and the ring (B) with new O-rings (C).


NOTE:

Coat the O-rings with clean engine oil; do not use any other type oils or fluids.

Do not pinch the O-rings during installation.

Use all new parts supplied in the pressure regulator replacement kit.


2.

Install the new bracket (D).


2. Fuel Tank Unit

1.

Insert the fuel tank unit (A) into the fuel tank with a new O-ring (B).


2.

Align the marks (A) on the fuel tank and the fuel tank unit, then insert the fuel tank unit into the fuel tank.


NOTE: To prevent a fuel leak, check the base gasket, visually or by hand, to make sure it is not pinched.


3.

Tighten a new locknut (A) by hand holding the fuel tank unit vertically.


NOTE: Before tightening, align the mark (B) on the locknut to the start of the thread (C).


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4.

Using the special tool, tighten the locknut to the specified torque.


NOTE:

After tightening, make sure the marks (A) are still aligned.

After installation, check the base gasket, visually or by hand, to make sure it is not pinched.


5.

Reconnect the quick-connect fittings (B).


3. Battery Terminal - Reconnection


NOTE: If the battery performs abnormally, test the battery.


1.

Clean the battery terminals.


2.

Connect the positive cable (A) to the battery.


NOTE: Always connect the positive side first.


3.

Connect the negative cable and battery sensor (B) to the battery.


4.

Apply multipurpose grease to the terminals to prevent corrosion.


4. HDS DLC - Connection


1.

Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.


2.

Turn the ignition switch to ON (II).


3.

Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.


5. Fuel Pump On

1.

From the INSPECTION MENU of the HDS, select Fuel Pump ON.


NOTE: Pending or Confirmed DTC may be set during this procedure. Check for DTCs, and clear them as needed.


2.

Turn the ignition switch to LOCK (0).


6. Fuel Gauge Sending Unit Access Panel


1.

Connect the connector (A).


2.

Install the access panel (B) to the floor.


7. Fuel Line Leak Check

1.

Turn the ignition switch to ON (II) (but do not operate the starter motor). The fuel pump runs for about 2 seconds, and fuel pressure rises. Repeat this two or three times, then make sure there are no fuel leaks.


8. Rear Floor Upper Cross-Member

22mm

1.

Install the rear floor upper cross-member (A).


9. Left Rear Seat-Back - Split Fold Down

1.

Extend the center seat belt (A), then install the pivot shaft (B) to the center pivot bracket (C).


2.

Install the left rear seat-back (A).


10. Center Pivot Bracket - Split Fold Down


1.

If necessary, install the bushing (A).


2.

Install the center pivot bracket (B).


11. Right Rear Seat-Back - Split Fold Down

1.

Install the right rear seat-back (A).


12. Fuel Filler Cap

1.

Install the fuel fill cap.


13. Trunk Floor Cover

1.

Install the trunk floor cover (A).



2.

Install the front area of the trunk floor cover (A).


3.

Raise the seat-back(s).


14. Rear Seat Cushion

1.

Install the hooks (A) to the rear seat cushion clips (B).


2.

Install the bolt (A) securing the rear seat cushion (B).


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See also:

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