Mitsubishi Galant. Manual - part 21
GENERAL DESCRIPTION
TSB Revision
ENGINE MECHANICAL <2.4L>
11A-3
.
G EN ER A L DESC RIPTIO N
M1111000100152
The 4G64 (2.4L) engine is an in-line four cylinder engine. The cylinder numbers are assigned as 1-2-3-4 from
the front of the engine (timing belt side). This engine is fired in the order of the 1, 3, 4 and 2 cylinders.
EN G IN E D IA G N O SIS
M1111000700110
ITEMS
SPECIFICATIONS
Type
In-line SOHC
Number of cylinders
4
Bore mm (in)
86.5 (3.41)
Stroke mm (in)
100.0 (3.94)
Piston displacement cm
3
(cu in)
2,351 (143.4)
Compression ratio
9.0
Firing order
1-3-4-2
Counterbalance shaft
Equipped
Valve timing
Intake valve
Opens (BTDC)
16
°
Closes (ABDC)
53
°
Exhaust valve
Opens (BBDC)
50
°
Closes (ATDC)
16
°
Lubrication
Pressure feed-full flow filtration
Oil pump type
Involute gear type
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 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 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