Mazda 6 manuals

Mazda 6 Service Manual: Fuel injector removal/installation

Mazda 6 Service Manual / Fuel and emission control systems / Fuel system / Fuel injector removal/installation



2. Disconnect the negative battery cable.

3. Remove in the order indicated in the table.

4. Install in the reverse order of removal.


Plastic Fuel Hose Removal Note


1. Disconnect the quick release connector.

(1) Push the tab on the locking coupler 90 degrees

until it stops.

(2) Pull the fuel hose straight back.


2. Cover the disconnected quick release connector and fuel pipe with vinyl sheets or the like to prevent them from being scratched or contaminated with foreign material.

Fuel Injector Removal Note


1. Insert a screwdriver between the injector cup and the clip fingers.


2. Rotate the screwdriver to spread the clip fingers and remove them from the injector cup.

3. Pull the injector and clip out of the rail.

4. Remove the clip from the injector according to the following:

(1) Grasp the clip with a pair of pliers.

(2) Pull the clip parallel to the injector groove, and remove it from the injector.

(3) Discard the clip.

Fuel Injector Installation Note

1. Lightly lubricate the injector groove and O-ring.

2. Pre-attach a new clip in the injector groove.


3. Hold the injector firmly, push the clip into the injector until the clip stops sliding.

4. Verify that the injector connector position is correct, and press the injector and clip into the injector cup. Continue pressing until the clip contacts the lower surface of the injector cup.

5. Verify that the injector and clip are correctly attached with the clip locked onto the injector cup notch.

Plastic Fuel Hose Installation Note


1. When the retainer is not removed, perform the following procedure.

(1) Inspect the fuel pump unit sealing surface for damage and deformation, and replace as necessary.

  • If the quick release connector O-ring is damaged, replace the plastic fuel hose.

(2) Slightly apply clean engine oil to the sealing surface of the fuel pump unit.

(3) Align the fuel pipe on the fuel pump unit and quick release connector so that the tabs of the retainer are correctly fitted into the quick release connector. Push the quick release connector straight into the retainer until a click is heard.

(4) Lightly pull and push the quick release connector a few times by hand and verify that it can move 2.0-3.0 mm {0.08-0.11 in}

and it is connected securely.

  • If quick release connector does not move at all, verify that O-ring is not damaged and slipped, and reconnect the quick release connector.

2. When the retainer is removed, perform the following procedure.

Fuel pump unit inspection
Caution It is normal to hear the fuel pump operating when the ignition switch is turned to the ON position. Note To improve startability, the fuel pump control operates the fuel pump ...

Fuel injector inspection
Operation Test Carry out the Fuel Injector Operation Inspection. (See Fuel Injector Operation Inspection.) If not as specified, perform the further inspection for the fuel injectors. Resi ...

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