2006 MITSUBISHI COLT oil pressure

BASE ENGINE
ENGINE MECHANICAL <4G1>11B-3
BASE ENGINE
M2112001000886
CYLINDER HEAD GASKET
AK402138
A
AC
AA-A
To co rrespo nd wi th the imp r ove d o u t put pe rfo r ma nce
by emplo
y in g the t u rbocharger , a three layer me t a l
gasket is used.
CYLINDER BLOCK
AK402048AC
Oil jet
The cylinder bl ock has the oil jet fitted o n the main
bearin
g among th e cylin ders in ord e r to make the
pist
on cool. T he oil is injecte d from the o il g r oove of
the main b
earin g when th e oil pressure is 2kg/ cm
2 or
more.

BASE ENGINE
ENGINE MECHANICAL <4A9>11A-16
CAMSHAFT
AK304999
Intake camshaft
Exhaust camshaft
AB
Hollow section
Advance
oil channel
Retard
oil channel
Cam positon sensing ring
Dowel pinSealing cap
The lightweight camshaf t is ach i eved by the h o llo w
design.
Oil channels run through the int a ke camshaf t,
through
wh ich oil is sent from t he oil fee der co ntrol
valve to
the V . V . T . sprocket.
A cam position sen s in g ring is press-fitt ed onto the
rear port
i on o f the int a ke camshaf t.
ItemDimension
Overall length
mmIntake407.5
Exhaust361.9
Journal mm26
Valve lift mmIntake8.4
Exhaust7.9
OIL FEEDER CONT ROL V A L V E(OCV)
AK302997AB
Spring guideValve sleeve
Plunger spring Spool
O-ring
Insulation coilar
StatorGuide cap Bracket
Yo k eSeal cap
Plunger
Shaft Terminal
Bobbin
Tape
Enameled copper wire
Drain
Drain
Pump
Pressure
chamber
Default
pressure
chamber
The oil fee
der co ntrol valve is essen t ially a solenoid
valve, re
gulat ed by the en gine -ECU or
engin
e -A-M/T -ECU signals to feed o il to the V . V . T .
sprocket
assemb ly t o move the van e rotor .

BASE ENGINE
ENGINE MECHANICAL <4A9>11A-32
CAMSHAFT
AK304999
Intake camshaft
Exhaust camshaft
AB
Hollow section
Advance
oil channel
Retard
oil channel
Cam positon sensing ring
Dowel pinSealing cap
The lightweight camshaf t is ach i eved by the h o llo w
design.
Oil channels run through the int a ke camshaf t,
through
wh ich oil is sent from t he oil fee der co ntrol
valve to
the V . V . T . sprocket.
A cam position sen s in g ring is press-fitt ed onto the
rear port
i on o f the int a ke camshaf t.
ItemDimension
Overall length
mmIntake407.5
Exhaust361.9
Journal mm26
Valve lift mmIntake8.4
Exhaust7.9
OIL FEEDER CONT ROL V A L V E(OCV)
AK302997AB
Spring guideValve sleeve
Plunger spring Spool
O-ring
Insulation coilar
StatorGuide cap Bracket
Yo k eSeal cap
Plunger
Shaft Terminal
Bobbin
Tape
Enameled copper wire
Drain
Drain
Pump
Pressure
chamber
Default
pressure
chamber
The oil fee
der co ntrol valve is essen t ially a solenoid
valve, re
gulat ed by the en gine -ECU or
engin
e -A-M/T -ECU signals to feed o il to the V . V . T .
sprocket
assemb ly t o move the van e rotor .

GENERAL INFORMATION
ENGINE LUBRICATION12-2
GENERAL INFORMATION
M2120000100175
LUBRICATION SYSTEM SCHEMATIC<4A9>
AK402024AC
Oil screenOil pump
Timing chain case
oil passage
Cylinder block
oil passage(right side) Oil filter
Relief valve
Cylinder block
oil passage
(main gallery)Crankshaft
journal
Exhaust camshaft
journal
Oil pressure switch
Cylinder head
oil passage
No.1 Camshaft
journal
Intake camshaft
journal Crankshaft
pin
The lu
brication system of th e 4A9 en gine has a full
pressure de
livery system and a full flow oil filtering
system. The o
il stored in the oil p an is pumped
up/out
by th e oil pump. Af ter the relie f valve regu
-
lates the oil p r essure, th e oil is delivere d to th e cylin-
der block through the o il f ilte r , the o il p a ssag e of the
cylinde
r blo ck a nd the each jou r nal o f the crankshaf t.
The oil del ivered to the ea ch jo urnal of th e cranksh af t
is supplied
to the pin th rough the in ner p a ssage of
the crankshaf
t.
The oil delivered to the cylinder head is supplied t o
the ea
ch journa l of the camshaf t th rough the cylinde r
head.

GENERAL INFORMATION
ENGINE LUBRICATION12-3
LUBRICATION SYSTEM SCHEMATIC<4G1>
AK402151AC
Oil screen
Oil pump
Oil filter
Relief valve
Cylinder block
oil passage
(main gallery)Crankshaft
journal
Exhaust camshaft
journal
Oil pan Oil pressure switch
Cylinder head
oil passage
No.1 Camshaft
journal
Intake camshaft
journal Crankshaft pin
PistonOil jet
Oil cooler
Turbo charger
Lash adjuster Cam
To correspond with the impr oved engine outp u t per-
formance b y emplo y ing the tu rboch a rger , the oil
cooler and
the oil jet are u s ed for 4GI engine.

OIL PUMP<4A9>
ENGINE LUBRICATION12-4
OIL PUMP<4A9>
M2120002000044
AK305367AB
Timing chain caseOil pump
inner rotor
Oil pump
outer rotor Oil seal
Cover
Machine screw
A
A-A
A
The oil pump is of a
cyclo i d type, d i rectly driven by
the crankshaf
t.
On the cycloid o il p u mp, as th e inn e r rotor is ro t a ted
by th
e cran kshaf t, the o u ter rot o r also rot a tes. The
result
a n t ch ange in sp at ial volu mes betwee n the
rotors
genera t es p u mping action .
Sp e c ifically , o il is sucked into the exp and ing sp ace
and is pushed
out from the shrinking sp ace.
ItemSpecification
Ty p eCycloid pump
No. of lobesInner rotor10
Outer rotor11
Displacement L/min(6,000 r/min.)35
RELIEF V A L V E<4A9>
M21200030 0004 7
AK305369AB
Plug
A-A
A A
Relief spring
Relief plunger
Timing chain case
The relief valve is of a
plun ger type. The valve re gu-
lates the maximum pre ssu re of lubricatio n oil being
sent
to the e ngin e .
When the pressure of oil from the oil p u mp exceeds
the specified
value, the valve o pens to relieve the
excess flow
.
The excess o il is ret u rned t o the suct ion side of the
oil pump
.

GENERAL INFORMATION
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-3
SYSTEM BLOCK DIAGRAM
AK600486
Barometric pressure sensorThrottle valve control servo
Manifold absolute pressure
sensor
Engine coolant
temperature sensor
No.1 injector
No.2 injector
No.3 injector
No.4 injector
No.1 Ignition coil
No.2 Ignition coil
No.3 Ignition coil
No.4 Ignition coil
Engine control relay
Throttle valve control servo relay
A/C compressor relay
Fuel pump relay
Alternator G terminal
Cooling fan control relay
Purge control solenoid valve
Diagnostic output terminal
Intake air temperature sensor
Accelerator pedal
position sensor (main) Throttle position sensor (sub)
Camshaft position sensor
Crank angle sensor
Oxygen sensor (front)
Oxygen sensor (rear)
Alternator FR terminal
Inhibitor switch
Detonation sensor
Ignition switch-IG
Ignition switch-ST
Stop lamp switch
Power supply
Accelerator pedel
position sensor (sub) Throttle position sensor (main)
Throttle valve control unitEngine control unit
Engine-ECU or
Engine-CVT-ECU
Throttle opening feedback control Oxygen sensor heater (front)
Oxygen sensor heater (rear)
[1] Fuel injection control
[2] Throttle valve opening control
and idle speed control
[3] MIVEC (Mitsubishi Innovative
Valve timing Electronic
control system)
[4] Ignition timing control
[5] Engine control relay control
[6] Throttle valve control servo
relay control
[7] Fuel pump relay control
[8] Oxygen sensor heater
control
[9] Fan relay control
[10] A/C compressor relay
control
[11] Alternator control
[12] Purge control
[13] EGR control
[14] Diagnostic output
[15] RAM data transmission
Oil feeder control valve
(for MIVEC)
EGR valve
(Stepper motor)
AB

GENERAL INFORMATION
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-4
CONTROL SYSTEM DIAGRAM

AK600525
1 Oxygen sensor
(front)4 Intake air temperature
sensor
3 Manifold absolute
presssure sensor
2 Oxygen sensor (rear) 3 Throttle valve control
servo
10 Throttle position sensor
(main)
2 Purge control
solenoid valve
8 Engine coolant
temperature sensor
9 Detonation sensor
7 Crank angle sensor
6 Camshaft position sensor
4 Oil feeder control valve
1 Injector
AB
M
1 Oxygen sensor (front)
2 Oxygen sensor (rear)
3 Manifold absolute
presssure sensor
4 Intake air temperature
sensor
5 Throttle position
sensor
(sub)
6 Camshaft position
sensor
7 Crank angle sensor
8 Engine coolant
temperature sensor
9 Detonation sensor
10 Throttle position
sensor (main) 1 Injector
2 Purge control
solenoid valve
3 Throttle valve control
servo
4 Oil feeder control
valve
Power supply
Ignition switch-IG
Ignition switch-ST
Accelerator pedal
position sensor
(main)
Accelerator pedal
position sensor
(sub)
Alternator FR
terminal
Stop lamp switchEngine-ECUEngine control relay
Fuel pump relay
A/C compressor relay
Throttle valve
control servo relay
Ignition coil
Cooling fan
control relay
Diagnosis output
Alternator G terminal
Oxygen sensor heater
(front)
Oxygen sensor heater
(rear)
Canister Air
inlet
Catalytic converter From fuel
pump
5 Throttle position sensor
(sub)
Barometric
pressure
sensor