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
  • Fuel Line Pressure Reduction (Refer to ).
  • Air Cleaner Assembly Removal (Refer to GROUP 15 - Air Cleaner ).

 Post-installation Operation
  • Air Cleaner Assembly Installation (Refer to GROUP 15 - Air Cleaner ).
  • Fuel Leakage Inspection




Removal steps


·
 PCV hose connection (Refer to GROUP 11A - Cylinder Head Cover Assembly ).
<<A>>
 >>F<<
 1.
 Fuel main pipe connection
<<B>>
 >>E<<
 2.
 Delivery pipe and fuel injector assembly


3.
 Insulator

>>D<<
 4.
 Injector support

>>C<<
 5.
 Fuel injector assembly

>>B<<
 6.
 O-ring

>>A<<
 7.
 O-ring


8.
 Fuel injector


9.
 Delivery pipe

REMOVAL SERVICE POINTS

<<A>> FUEL MAIN PIPE DISCONNECTION
Follow the steps below to unlock the fuel main pipe connector.

1.Insert a flat-tipped screwdriver (6 mm wide and 1 mm thick) into the retainer of the fuel main pipe connector.

2.
caution When pushing up the retainer of the fuel main pipe 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 main pipe connector.
3.Disconnect the fuel main pipe.

<<B>> DELIVERY PIPE AND FUEL INJECTOR ASSEMBLY REMOVAL
caution Do not drop the fuel injector.
Remove the 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 the right and left, install the O-ring to the fuel injector with care not to damage 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.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 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 delivery pipe and check for its smooth rotation.

>>D<< INJECTOR SUPPORT INSTALLATION

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

>>E<< DELIVERY PIPE AND FUEL INJECTOR ASSEMBLY INSTALLATION
1.Apply a small amount of new engine oil to the O-ring at the end of the fuel injector assembly.
2.
caution When installing the delivery pipe and fuel injector assembly to the cylinder head, take care not to damage the O-ring at the tip of the fuel injector assembly.
Install the delivery pipe and fuel injector assembly to the cylinder head. Be careful not to damage the O-ring.
3.Tighten the delivery pipe mounting bolts to the specified torque.
Tightening torque: 14 ± 3 N·m

>>F<< FUEL MAIN PIPE CONNECTION
Follow the steps below to lock the fuel main pipe connector.

1.Pull up the retainer of fuel main pipe to unlock before installing.

2.Securely insert the delivery pipe stopper into the fuel main pipe connector groove to install the fuel main pipe to the delivery pipe.

3.
caution
  • When pushing in the retainer of the fuel main pipe connector, pay attention to avoid damage to the retainer.
  • After the installation of the fuel main pipe, slightly pull the fuel main pipe to check that it is connected securely. At this time, also check that there is approximately 1 mm play.
Push in the retainer of the fuel main pipe connector to lock the fuel main pipe and delivery pipe.