REMOVAL AND INSTALLATION

caution

When the fuel injector is replaced, initialize the learned value using scan tool (Refer to GROUP 00, Precautions before Service - Initialization Procedure for Learning Value in MFI Engine .)

Removal steps 1. Control wiring harness connection 2. Fuel return hose connection 3. PCV hose 4. Emission control equipment hose connection <<A>> >>F<< 5. Fuel high-pressure hose connection 6. Engine upper cover bracket rear 7. Fuel injector hose >>E<< 8. Fuel injector return pipe 9. MFI fuel rail pressure regulator 10. O-ring 11. Fuel rail and fuel injector assembly 12. Fuel rail insulator >>D<< 13. Fuel injector support >>C<< 14. Fuel injector assembly >>B<< 15. O-ring >>A<< 16. O-ring 17. Fuel injector 18. Fuel rail 19. Fuel return pipe bracket

• MB992106: O-ring Installer
  

1.Follow the steps below to unlock the fuel high-pressure hose connector. (1) Insert a flat-tipped screwdriver [6 mm (0.24 inch) wide and 1 mm (0.04inch) thick] into the retainer of the fuel high-pressure hose connector. (2) caution When pushing up the retainer of the fuel high-pressure hose connector, pay attention to avoid damage to the retainer. Turn the flat-tipped screwdriver inserted into the retainer by 90 degrees angle to push up the retainer and unlock the fuel high-pressure hose connector. 2.Remove the fuel high-pressure hose.

1.Apply a small amount of new engine oil to the O-ring. 2.While turning the fuel injector to right and left, install the O-ring to the fuel injector with care to avoid damage to the O-ring.

2.Using special tool MB992106, install the o-ring onto the fuel injector paying attention to avoid damage to the O-ring.

2.Turning the fuel injector assembly to right and left, install it to the fuel rail with care not to damage the O-ring. After the installation, check for its smooth rotation. At this time, check that the projection of the fuel injector assembly is in the center. 3.If the rotation is not smooth, the O-ring may be caught. Remove the fuel injector assembly and check the O-ring for damage. After this, re-insert it to the fuel rail and check for its smooth rotation.

Install the fuel injector support to the fuel injector groove and fuel rail brim, and fix the fuel injector assembly and fuel rail.

2.Temporarily tighten the fuel injector return pipe at the 5 bolt. 3.Tighten the fuel injector return pipe to the tightening torque in the order 1 to 5 shown in the illustration. Specified torque: 5.5 ± 1.5 N·m (49 ± 13 in-lb)

1. caution When pushing in the retainer of the fuel high-pressure hose connector, pay attention to avoid damage to the retainer. After the installation of the fuel high-pressure hose, slightly pull the fuel high-pressure hose to check that it is connected securely. At this time, also check that there is approximately 1 mm (0.04inch) play. Securely insert the fuel rail stopper into the fuel high-pressure hose connector groove to install the fuel high-pressure hose to the fuel rail. 2.Push in the retainer of the fuel high-pressure hose connector to lock the fuel high-pressure hose and fuel rail.