Mitsubishi Outlander GS45X. Manual - part 991

INJECTOR

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-897

INJECTOR

REMOVAL AND INSTALLATION

M1131007103983

Required Special Tool:

• MB992106: O-ring installer

Pre-removal Operation
• Fuel Pump Connector Disconnection (How to Reduce 

Pressurized Fuel Lines) (Refer to 

P.13B-886

).

• Intake Manifold Plenum Removal (Refer to GROUP 15, 

Intake Manifold Plenum 

P.15-6

).

Post-installation Operation
• Intake Manifold Plenum Installation (Refer to GROUP 15, 

Intake Manifold Plenum 

P.15-6

).

• Fuel Leak Check

ACA01453

1

2

3

5

7

8

9

10

4

13

15

14

17

18

19

20

11

12

12 ± 1 N·m
106 ± 8 in-lb

12 ± 1 N·m
106 ± 8 in-lb

N

N

N

N

6

16

AB

Apply new engine oil 
to the O-ring before
installation.

Removal steps 

1.

Fuel injector connector connection 
(Left bank)

<<

A

>>

>>

F

<<

2.

Fuel high-pressure hose 
connection

<<

B

>>

>>

E

<<

3.

Fuel rail and fuel injector assembly 
(Left bank)

4.

Insulator

>>

D

<<

5.

Fuel injector support

>>

C

<<

6.

Fuel injector assembly

>>

B

<<

7.

O-ring

>>

A

<<

8.

O-ring

9.

Fuel injector

10. Fuel rail (Left bank)

11. Fuel injector connector connection 

(Right bank)

<<

A

>>

>>

F

<<

12. Fuel high-pressure hose 

connection

<<

B

>>

13. Fuel rail and injector assembly 

(Right bank)

14. Insulator

>>

D

<<

15. Fuel injector support

>>

C

<<

16. Fuel injector assembly

>>

B

<<

17. O-ring

>>

A

<<

18. O-ring
19. Fuel injector
20. Fuel rail (Right bank)

Removal steps (Continued)

INJECTOR

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-898

REMOVAL SERVICE POINTS

.

<<A>> FUEL HIGH-PRESSURE HOSE DISCON-
NECTION

CAUTION

Do not kink the fuel high-pressure hose as it is made of 
plastics.
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.

CAUTION

When pushing up the retainer of the fuel high-pressure 
hose connector, pay attention to avoid damage to the 
retainer.
2. 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.

3. Disconnect the fuel high-pressure hose.

.

<<B>> FUEL RAIL AND INJECTOR ASSEMBLY 
REMOVAL

CAUTION

Do not drop the fuel injector.
Remove the fuel rail 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.

AC703390

Fuel rail

Retainer

Fuel high-pressure
hose

Flat-tipped screw driver

AB

AC703391

Fuel rail

Retainer

Fuel high-pressure
hose

Flat-tipped screw driver

AB

AC703392

O-ring

Fuel injector

(Engine oil)

AB

INJECTOR

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-899

2. Using special tool MB992106, install the o-ring onto the fuel 

injector paying attention to avoid damage to the O-ring.

.

>>C<< FUEL INJECTOR ASSEMBLY 
INSTALLATION

CAUTION

When applying the engine oil, make sure not to allow the 
engine oil to enter the fuel rail inside.
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 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.

.

>>D<< FUEL INJECTOR SUPPORT 
INSTALLATION

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

.

>>E<< FUEL RAIL AND FUEL INJECTOR 
ASSEMBLY INSTALLATION

CAUTION

When applying the engine oil, make sure not to allow the 
engine oil to enter the intake manifold inside.
1. Apply a small amount of new engine oil to the O-ring at the 

end of fuel injector assembly.

AC803115

AB

MB992106

Fuel injector

(Engine oil)

O-ring

AC506793

AE

Fuel rail

Projection

Fuel injector

AC703396

Fuel injector
support

Fuel injector
groove

Fuel rail brim

AB

INJECTOR

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-900

CAUTION

When installing the fuel rail and fuel injector assembly to 
the intake manifold, pay attention to avoid damage to the 
O-ring at the end of the fuel injector assembly.
2. Install the fuel rail and fuel injector assembly to the intake 

manifold.

3. Tighten the fuel rail mounting bolts to the specified torque.

Tightening torque: 12 

± 1 N⋅m (106 ± 8 in-lb)

.

>>F<< FUEL HIGH-PRESSURE HOSE 
CONNECTION

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

before installing.

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.

2. Install the fuel high-pressure hose to the fuel rail securely 

and push retainer of the fuel high-pressure hose connector 
downward and lock thoroughly.

AC703394

Retainer

Fuel high-pressure
hose

AB

AC703395

Fuel rail

Retainer

Fuel high-pressure
hose

AB