Mitsubishi Pajero Pinin. Manual - part 10

ENGINE

<4G9-GDI>

Click on the applicable bookmark to selected the required model year

11A-1

ENGINE

<4G9-GDI>

CONTENTS

GENERAL INFORMATION

2

. . . . . . . . . . . . . . . . . . 

SERVICE SPECIFICATIONS

2

. . . . . . . . . . . . . . . . . 

SEALANTS

3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

SPECIAL TOOLS

4

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

ON-VEHICLE SERVICE

6

. . . . . . . . . . . . . . . . . . . . . 

Drive Belt Tension Check and Adjustment

6

. . . . . . 

Ignition Timing Check

9

. . . . . . . . . . . . . . . . . . . . . . . . . 

Idle Speed Check

10

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Idle Mixture Check

10

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Compression Pressure Check

11

. . . . . . . . . . . . . . . . . 

Manifold Vacuum Check

12

. . . . . . . . . . . . . . . . . . . . . 

Lash Adjuster Check

13

. . . . . . . . . . . . . . . . . . . . . . . . 

CRANKSHAFT PULLEY

16

. . . . . . . . . . . . . . . . . . . 

CAMSHAFT AND CAMSHAFT OIL SEAL

17

. . . 

OIL PAN

21

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

CRANKSHAFT OIL SEAL

23

. . . . . . . . . . . . . . . . . . 

CYLINDER HEAD GASKET

25

. . . . . . . . . . . . . . . . 

TIMING BELT

28

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

ENGINE ASSEMBLY

33

. . . . . . . . . . . . . . . . . . . . . . 

ENGINE <4G9-GDI> – 

General Information/Service Specifications

11A-2

GENERAL INFORMATION

Items

4G93-GDI

Total displacement m

ȏ

1,834

Bore 

×

 Stroke mm

81

×

89

Compression ratio

12.0

Combustion chamber

Pentroof + ball-in-piston

Camshaft arrangement

DOHC

Number of valve

Intake

8

Exhaust

8

Valve timing

Intake

Opening

BTDC 15

_

Closing

ABDC 56

_

Exhaust

Opening

BBDC 55

_

Closing

ATDC 15

_

Fuel system

Electronically controlled multipoint fuel injection

Rocker arm

Roller type

Auto-lash adjuster

Equipped

SERVICE SPECIFICATIONS

Items

Standard value

Limit

Alternator drive belt tension 
(When checked)

Vibration frequency Hz

143  –  185

–

(When checked)

Tension N

294  –  490

–

Deflection (Reference value) mm

9.7  – 12.9

–

Alternator drive belt tension 
(When adjusted)

Vibration frequency Hz

155  –  175

–

(When adjusted)

Tension N

343  –  441

–

Deflection (Reference value) mm

10.5  – 12.0

–

Alternator drive belt tension 
(When replaced)

Vibration frequency Hz

203  –  234

–

(When replaced)

Tension N

588  –  784

–

Deflection (Reference value) mm

6.7  – 8.5

–

ENGINE <4G9-GDI> – 

Service Specifications/Sealants

11A-3

Items

Limit

Standard value

Power steering oil pump and
A/C compressor drive belt

Vibration frequency Hz

114  –  139

–

A/C compressor drive belt
tension (When checked)

Tension N

392  –  588

–

(

)

Deflection (Reference value) mm

10.0  – 12.0

–

Power steering oil pump and
A/C compressor drive belt

Vibration frequency Hz

121  –  133

–

A/C compressor drive belt
tension (When adjusted)

Tension N

441  –  539

–

(

j

)

Deflection (Reference value) mm

10.0  – 11.0

–

Power steering oil pump and
A/C compressor drive belt

Vibration frequency Hz

145  –  166

–

A/C compressor drive belt
tension (When replaced)

Tension N

637  –  834

–

(

)

Deflection (Reference value) mm

7.0  – 9.0

–

Basic ignition timing

5

_

 BTDC 

±

 3

_

–

Ignition timing

Approx. 16

_

BTDC*

1

–

Idle speed r/min

600

±

 50*

1

–

CO contents %

0.6 or less

–

HC contents ppm

200 or less

–

Compression pressure kPa – r/min

1,720 – 300

1,337 – 300

Compression pressure difference of all cylinder kPa

–

Max. 100

Intake manifold vacuum kPa

–

Min. 60*

2

Cylinder head bolt shank length mm

–

96.4

Auto-tensioner push rod movement mm

Within 1

–

Timing belt tension torque Nm (Reference value)

2.5 – 4.0

–

Auto-tensioner rod protrusion amount mm

3.8 – 4.5

–

NOTE

*

1

: Indicates the value measured within 4 minutes since the engine was started.

*

2

: Indicates the value when more than 4 minutes have passed since the engine was started.

SEALANTS

Items

Specified sealants

Remarks

Beam camshaft cap
Cylinder head

3M ATD Part No.8660 or equivalent

–

Cam position sensor support
Oil pan

MITSUBISHI GENUINE PART
MD970389 or equivalent

Semi-drying sealant

Thrust case
Flywheel or drive plate bolt

3M Stud Locking 4170 or equivalent

–