Mitsubishi Montero (2002-2004). Manual — part 824

The 6G75 (3.8 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.

DIAGNOSIS

M1111000700024

ITEMS

SPECIFICATIONS

Type

V type, overhead camshaft

Number of cylinders

Bore mm (in)

95.0 (3.74)

Stroke mm (in)

90.0 (3.54)

Piston displacement cm

(cu. in)

3,828 (233.6)

Compression ratio

10.0

Firing order

1-2-3-4-5-6

Valve timing

Intake valve

Opens (BTDC)

Closes (ABDC)

Exhaust valve

Opens (BBDC)

Closes (ATDC)

TROUBLE SYMPTOM

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 oil pressure

Engine oil level is too low

Check the engine oil level.

Malfunction of oil pressure switch

Replace the 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.

Oil pressure too high

Stuck (closed) oil relief valve

Repair the relief valve.

SPECIAL TOOLS

TSB Revision

ENGINE MECHANICAL

11A-3

SPECIAL TOOLS

M1111000600458

Noisy valves

Malfunction of lash adjuster
(including entry of air into high
pressure chamber)

Check the lash adjuster.

Thin or diluted engine oil (low 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.

TROUBLE SYMPTOM

PROBABLE CAUSE

REMEDY

TOOL

TOOL NUMBER AND
NAME

SUPERSESSION

APPLICATION

MB991502
Scan tool (MUT-II)

MB991496-OD

Ignition timing check idle
speed check

MB991668
Belt tension meter set

Tool not available

Measurement of drive belt
tension (used together with
scan tool <MUT-II>)

MB991683
Sling chain set

−

Removal and installation of
engine assembly

MB991800
Pulley holder

MB991800-01

Holding the crankshaft
pulley

MB991802
Pin B

MB991802-01

Holding the crankshaft
pulley

B991502

B991668

B991683

MB991800

MB991802

SPECIAL TOOLS

TSB Revision

ENGINE MECHANICAL

11A-4

MB990767
End yoke holder

MB990767-01

Holding the camshaft
sprocket

MD998715
Crankshaft pulley holder
pin

MIT308239

Holding the camshaft
sprocket

MD998443
Auto-lash adjuster holder

MD998443-01

Holding the auto-lash
adjuster

MD998713
Camshaft oil seal installer

MD998713-01

Press-in of the camshaft oil
seal

MB991559
Camshaft oil seal adapter
installer

−

Press-fitting the camshaft
oil seal (left bank side)

MD998051
Cylinder head bolt
wrench

MD998051-01 or General
service tool

Cylinder head bolt removal
and installation

MD998717
Crankshaft front oil seal
installer

MD998717-01

Press-in of the crankshaft
front oil seal

MD998781
Flywheel stopper

General service tool

Securing the drive plate

TOOL

TOOL NUMBER AND
NAME

SUPERSESSION

APPLICATION

B990767

D998443

D998713

B991559

D998781

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Mitsubishi Montero (2002-2004). Manual — part 824

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