Mitsubishi Outlander GS45X. Manual — part 491
11C-1
GROUP 11C
ENGINE
MECHANICAL
<3.0L ENGINE>
CONTENTS
GENERAL INFORMATION . . . . . . . .
ENGINE DIAGNOSIS. . . . . . . . . . . . .
SERVICE SPECIFICATIONS. . . . . . .
SEALANTS AND ADHESIVE . . . . . .
SPECIAL TOOLS. . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE. . . . . . . . . . .
GENERATOR DRIVE BELT TENSION
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AUTO-TENSIONER CHECK . . . . . . . . . . .
POWER STEERING OIL PUMP
DRIVE BELT TENSION CHECK. . . . . . . . .
POWER STEERING OIL PUMP
DRIVE BELT INSPECTION . . . . . . . . . . . .
VALVE CLEARANCE CHECK AND
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . .
ROCKER ARM PISTON OPERATION
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION TIMING CHECK . . . . . . . . . . . . .
CURB IDLE SPEED CHECK . . . . . . . . . . .
IDLE MIXTURE CHECK . . . . . . . . . . . . . . .
COMPRESSION PRESSURE CHECK. . . .
MANIFOLD VACUUM CHECK . . . . . . . . . .
LASH ADJUSTER CHECK . . . . . . . . . . . . .
CRANKSHAFT PULLEY . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
CAMSHAFT OIL SEAL. . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
CAMSHAFT AND VALVE
STEM SEAL . . . . . . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
OIL PAN AND OIL STRAINER. . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .
CRANKSHAFT FRONT OIL SEAL. . .
REMOVAL AND INSTALLATION . . . . . . . .
CRANKSHAFT REAR OIL SEAL. . . .
REMOVAL AND INSTALLATION . . . . . . . .
CYLINDER HEAD GASKET . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
TIMING BELT . . . . . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .
ENGINE ASSEMBLY . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
GENERAL INFORMATION
TSB Revision
ENGINE MECHANICAL <3.0L ENGINE>
11C-2
GENERAL INFORMATION
M1111000101746
The 6B31 (3.0 L) engine is a six-cylinder engine. The
cylinder numbers are assigned as 1-3-5 for the right
bank and 2-4-6 for the left bank from the front of the
engine (timing belt side). This engine is fired in the
order of 1-2-3-4-5-6 cylinders.
ITEMS
SPECIFICATIONS
Type
V type, overhead camshaft
Number of cylinders
6
Bore mm (in)
87.6 (3.45)
Stroke mm (in)
82.9 (3.26)
Total displacement cm
3
(cu. in)
2,998 (182.9)
Compression ratio
10.5
Firing order
1-2-3-4-5-6
Valve timing
Intake valve
Opens (BTDC)
-1
° <Low speed cam>
18
° <High speed cam>
Closes (ABDC)
37
° <Low speed cam>
86
° <High speed cam>
Exhaust valve
Opens (BBDC)
55
°
Closes (ATDC)
20
°
Lubrication system
Pressure feed, full-flow filtration
Oil pump type
Trochoid type
ENGINE DIAGNOSIS
TSB Revision
ENGINE MECHANICAL <3.0L ENGINE>
11C-3
ENGINE DIAGNOSIS
M1111000700381
SYMPTOMS
PROBABLE CAUSE
REMEDY
Compression is too
low
Blown cylinder head gasket
Replace the gasket.
Worn or damaged piston rings
Replace the rings.
Worn piston or cylinder
Repair or replace the piston and/or the
cylinder block.
Worn or damaged valve seat
Repair or replace the valve and/or the
seat ring
Drop in engine oil
pressure
Engine oil level is too low
Check the engine oil level.
Malfunction of engine oil pressure switch
Replace the engine oil pressure switch.
Clogged oil filter
Install a new filter.
Worn oil pump gears or cover
Replace the gears and/or the cover.
Thin or diluted engine oil
Change the engine oil to the correct
viscosity.
Stuck (opened) oil relief valve
Repair the relief valve.
Excessive bearing clearance
Replace the bearings.
Engine oil pressure
too high
Stuck (closed) oil relief valve
Repair the relief valve.
Noisy valves
Incorrect valve clearance <Intake side>
Adjust valve clearance
Malfunction of lash adjuster (including
entry of air into high pressure chamber)
<Exhaust side>
Check the lash adjuster.
Thin or diluted engine oil (low engine oil
pressure)
Change the engine oil.
Worn or damaged valve stem or valve
guide
Replace the valve and/or the guide.
Connecting rod
noise/main bearing
noise
Insufficient oil supply
Check the engine oil level.
Thin or diluted engine oil
Change the engine oil.
Excessive bearing clearance
Replace the bearings.
SERVICE SPECIFICATIONS
TSB Revision
ENGINE MECHANICAL <3.0L ENGINE>
11C-4
SERVICE SPECIFICATIONS
M1112000302100
SEALANTS AND ADHESIVE
M1111000500923
Item
Standard value
Limit
Power steering oil pump drive belt tension Vibration frequency Hz
119
− 225
−
Deflection (Reference) mm
(in)
8.5
− 18.3 (0.33 −
0.72)
−
Basic ignition timing at idle
5
°BTDC ± 3°
−
Actual ignition timing at curb idle
Approximately 10
°
BTDC
−
CO contents %
0.5 or less
−
HC contents ppm
100 or less
−
Curb idle speed r/min
600
± 100
−
Compression pressure (200 r/min) kPa (psi)
1,650 (239)
Minimum
1,150 (167)
Compression pressure difference of all cylinder kPa (psi)
−
98 (14)
Intake manifold vacuum at curb idle kPa (in Hg)
−
Minimum 60
(18)
Cylinder head bolt outside diameter mm (in)
−
0.1 (0.0039)
Auto-tensioner rod protrusion amount mm (in)
9.1
− 13.4 (0.36 −
0.52)
−
Item
Specified sealant and adhesive
Remark
Engine oil pressure switch
ThreeBond 1141J, ThreeBond 1215,
ThreeBond 1212D or equivalent
Semi-drying
sealant
Engine upper oil pan
ThreeBond 1227D, ThreeBond 1217G
(Mitsubishi Genuine Part No.1000A923),
LOCTITE 5970, LOCTITE 5900 or equivalent
Semi-drying
sealant
Engine lower oil pan
ThreeBond 1227D, ThreeBond 1217G
(Mitsubishi Genuine Part No.1000A923),
ThreeBond 1207F (Mitsubishi Genuine Part
No.1000A992), LOCTITE 5970, LOCTITE
5900 or equivalent
Semi-drying
sealant
Drive plate bolt
ThreeBond 1324 or equivalent
Anaerobic
adhesive
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