Mitsubishi Lancer Evolution X. Manual - part 454

ON-VEHICLE SERVICE

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-881

CAUTION

To prevent the coil from burning, keep the duration of the 
voltage application as short as possible.
2. Check that the operation sound of the exhaust engine oil 

control valve can be heard when the positive battery voltage 
is supplied to the exhaust engine oil control valve. (Use the 
special tool MB991658 to connect terminal No. 2 of the 
exhaust engine oil control valve connector to the positive 
battery terminal and terminal No. 1 to the negative battery 
terminal.)

3. If the operation sound cannot be heard, replace the exhaust 

engine oil control valve.

.

<Checking the Coil Resistance>

1. Disconnect the exhaust engine oil control valve connector.
2. Measure resistance between terminal No. 1 and terminal 

No. 2 of the connector at the exhaust engine oil control valve 
side.

Standard value: 6.9 − 7.9 Ω [at 20° C (68° F)]

3. If resistance is not within the standard value, replace the 

exhaust engine oil control valve.

EVAPORATIVE EMISSION VENTILATION 
SOLENOID CHECK

M1131012800439

Refer to GROUP 17, Emission Control − Evaporative Emission 

Canister and Fuel Tank Pressure Relief Valve − Inspection 

P.17-79

.

EVAPORATIVE EMISSION PURGE SOLENOID 
CHECK

M1131005600507

Refer to GROUP 17, Emission Control − Evaporative Emission 

System − Evaporative Emission Purge Solenoid Check 

P.17-76

.

AK703722 AB

Exhaust
engine
oil control
valve

MB991658

AK704083

1 2

AB

Exhaust engine oil
control valve connector

INJECTOR

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MULTIPORT FUEL INJECTION (MFI)

13A-882

INJECTOR

REMOVAL AND INSTALLATION

M1131007103466

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 

P.00-34

).

Pre-removal operation
• How to Reduce Pressurized Fuel Lines (Refer to 

P.13A-868

).

• Engine Upper Cover Removal (Refer to GROUP 16, Igni-

tion System − Ignition Coil 

P.16-41

).

• Charge Air Cooler Intake Hose A, B and Charge Air 

Cooler Intake Pipe A Removal (Refer to GROUP 15, 

Charge Air Cooler 

P.15-13

).

• Air Cleaner Assembly Removal (Refer to GROUP 15, Air 

Cleaner 

P.15-12

).

Post-installation operation
• Air Cleaner Assembly Installation (Refer to GROUP 15, 

Air Cleaner 

P.15-12

).

• Charge Air Cooler Intake Hose A, B and Charge Air 

Cooler Intake Pipe A Installation (Refer to GROUP 15, 

Charge Air Cooler 

P.15-13

).

• Fuel Leak Check
• Engine Upper Cover Installation (Refer to GROUP 16, 

Ignition System − Ignition Coil 

P.16-41

).

AC704329

1

2

4

5

8

7

9

10

11

12

12

13

14

15

16

17

18

N

N

N

5.5 ± 1.5 N·m
49 ± 13 in-lb

12 ± 3 N·m
107 ± 26 in-lb

8.5 ± 3.5 N·m
75 ± 31 in-lb

8.5 ± 3.5 N·m
75 ± 31 in-lb

AC

3

6

8.0 ± 2.0 N·m
71 ± 18 in-lb

10 ± 2 N·m
89 ± 17 in-lb

INJECTOR

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MULTIPORT FUEL INJECTION (MFI)

13A-883

Required Special Tool:

• MB992106: O-ring Installer

REMOVAL SERVICE POINT

.

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

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.

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 angle to push up the retainer and unlock 
the fuel high-pressure hose connector.

2. Remove the fuel high-pressure hose.

Removal steps 

1.

Control wiring harness 
connection

2.

Fuel return hose connection

3.

PCV hose

4.

Emission control equipment hose 
connection

<<A>>

>>E<<

5.

Fuel high-pressure hose 
connection

6.

Engine upper cover bracket rear

7.

Fuel injector hose

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

Removal steps (Continued)

AC506790AB

Fuel high-pressure
hose

Retainer

Fuel rail

AC407430AC

Retainer

Fuel rail

Flat-tipped 
screwdriver

Fuel high-pressure
hose

AC407429AC

Retainer

Fuel rail

Fuel high-pressure
hose

Flat-tipped 
screwdriver

INJECTOR

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MULTIPORT FUEL INJECTION (MFI)

13A-884

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 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.

.

AC506791

AB

Fuel injector

(Engine oil)

O-ring

AC803115

AB

MB992106

Fuel injector

(Engine oil)

O-ring

AC506793

AE

Fuel rail

Projection

Fuel injector