REMOVAL AND INSTALLATION


caution When the fuel injector is replaced, initialise the learned value using M.U.T.-III (Refer to GROUP 00 - Precautions before Service, Initialisation Procedure for Learning Value in MPI Engine ).
Pre-removal Operation
  • How to Reduce Pressurized Fuel Lines (Refer to ).
  • Inlet Upper Manifold Removal (Refer to GROUP 15 - Inlet Upper Manifold ).

 Post-installation Operation
  • Inlet Upper Manifold Installation (Refer to GROUP 15 - Inlet Upper Manifold ).
  • Fuel Leak Check.




Removal steps


1.
 Fuel injector connector connection
<<A>>
 >>F<<
 2.
 Fuel high-pressure hose connection
<<B>>
 >>E<<
 3.
 Left fuel delivery pipe and fuel injector assembly


4.
 Insulator
<<B>>
 >>E<<
 5.
 Right fuel delivery pipe and fuel injector assembly


6.
 Insulator

>>D<<
 7.
 Fuel injector support

>>C<<
 8.
 Fuel injector assembly

>>B<<
 9.
 O-ring

>>A<<
 10.
 O-ring


11.
 Fuel injector


12.
 Left fuel delivery pipe assembly


13.
 Right fuel delivery pipe assembly

REMOVAL SERVICE POINTS

<<A>> FUEL HIGH-PRESSURE HOSE DISCONNECTION

1.
caution Do not kink the fuel high-pressure hose as it is made of plastics.
Insert a flat-tipped screwdriver (6 mm wide and 1 mm 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 to push up the retainer and unlock the fuel high-pressure hose connector.

<<B>> FUEL DELIVERY PIPE AND FUEL INJECTOR ASSEMBLY REMOVAL
caution Do not drop the fuel injector.
Remove the fuel delivery pipe with the fuel injectors attached to it.

INSTALLATION SERVICE POINTS

>>A<< O-RING INSTALLATION

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.

>>B<< O-RING INSTALLATION
1.Apply a small amount of new engine oil to the O-ring.

2.Using special tool O-ring installer (MB992106), install the fuel injector paying attention to avoid damage to the O-ring.

>>C<< FUEL INJECTOR ASSEMBLY INSTALLATION
1.
caution When applying the engine oil, make sure not to allow the engine oil to enter the fuel delivery pipe inside.
Apply a small amount of new engine oil to the O-ring.

2.Turning the fuel injector assembly to right and left, install it to the fuel delivery pipe with care not to damage the O-ring. After the installation, check for its smooth rotation. At this time, check that the projection part of the fuel injector assembly is in the centre.
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 delivery pipe and check for its smooth rotation.

>>D<< FUEL INJECTOR SUPPORT INSTALLATION

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

>>E<< FUEL DELIVERY PIPE AND FUEL INJECTOR ASSEMBLY INSTALLATION
1.
caution When applying the engine oil, make sure not to allow the engine oil to enter the inlet manifold inside.
Apply a small amount of new engine oil to the O-ring at the end of fuel injector assembly.
2.
caution When installing the fuel delivery pipe and fuel injector assembly to the inlet manifold, pay attention to avoid damage to the O-ring at the end of the fuel injector assembly.
Install the fuel delivery pipe and fuel injector assembly to the inlet manifold.
3.Tighten the mounting bolts of the fuel delivery pipe to the specified torque.
Tightening torque: 12 ± 1 N·m

>>F<< FUEL HIGH-PRESSURE HOSE CONNECTION

1.Pull up the retainer of fuel high-pressure hose to unlock before installing.

2.
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 play.
Install the fuel high-pressure hose to the fuel delivery pipe securely and push in the retainer of the fuel high-pressure hose connector to lock the fuel high-pressure hose and fuel delivery pipe.