2005 MITSUBISHI LANCER Intake

EXHAUST MANIFOLD
INTAKE AND EXHAUST15-8
REMOVAL SERVICE POINT
<> ENGINE CONTROL OXYGEN
SENSOR (FRONT) REMOVAL
Use special tool oxygen sensor wrench (MD998770)
to remove the engine control oxygen sensor (front).
INSTALLATION SERVICE POINT
>>A<< ENGINE CONTROL OXYGEN
SENSOR (FRONT) INSTALLATION
Use special tool oxygen sensor wrench (MD998770)
to install the engine control oxygen sensor (front).
Removal steps
1. Front exhaust pipe connection
2. Exhaust pipe gasket
<> >>A<<3. Engine control oxygen sensor (front)
4. Engine oil level gauge and guide
assembly
5. Engine oil filler O-ring6. Exhaust manifold cover
7. Exhaust manifold bracket
8. Exhaust manifold
9. Exhaust manifold gasketRemoval steps (Continued)
AC212566AC
MD998770
Engine control
oxygen sensor
(front)
AC212566AC
MD998770
Engine control
oxygen sensor
(front)

EXHAUST MANIFOLD
INTAKE AND EXHAUST15-9
REMOVAL AND INSTALLATION <4G6>M1151003300579
Pre-removal and Post-installation Operation
Under cover Removal and Installation
AC30368050 ± 10 N·m 44 ± 5 N·m35 ± 6 N·m14 ± 1 N·m
14 ± 1 N·m
49 ± 5 N·m29 ± 3 N·m
29 ± 3 N·m
N
3
4
12 5
N
8944 ± 5 N·m
AB
1049 ± 5 N·m
6 7
9.0 ± 2.0 N·m49 ± 9 N·m
Removal steps
1. Front exhaust pipe connection
2. Exhaust pipe gasket
<> >>A<<3. Engine control oxygen sensor (front)
4. Exhaust manifold cover
5. Exhaust manifold bracket6. Starter cover
7. Starter cover bracket
8. Engine hanger
9. Exhaust manifold
10. Exhaust manifold gasketRemoval steps (Continued)

EXHAUST MANIFOLD
INTAKE AND EXHAUST15-10
REMOVAL SERVICE POINT
<> ENGINE CONTROL OXYGEN
SENSOR (FRONT) REMOVAL
Use special tool oxygen sensor wrench (MD998770)
to remove the engine control oxygen sensor (front).
INSTALLATION SERVICE POINT
>>A<< ENGINE CONTROL OXYGEN
SENSOR (FRONT) INSTALLATION
Use special tool oxygen sensor wrench (MD998770)
to install the engine control oxygen sensor (front).
INSPECTIONM1151003400543
Check the following points; replace the part if a
problem is found.
Exhaust Manifold Check
1. Check for damage or cracking of any part.2. Using a straight edge and a feeler gauge, check
for distortion of the cylinder head installation
surface.
Standard value: 0.15 mm or less
Limit: 0.20 mm
AC212566AC
MD998770
Engine control
oxygen sensor
(front)
AC212566AC
MD998770
Engine control
oxygen sensor
(front)

EXHAUST PIPE AND MAIN MUFFLER
INTAKE AND EXHAUST15-11
EXHAUST PIPE AND MAIN MUFFLER
REMOVAL AND INSTALLATIONM1151008700301
AC303694AB
1 3
50 ± 10 N·m
2
6
N
N
45
74
N89
59 ± 10 N·m 45 ± 5 N·m13 ± 2 N·m
45 ± 5 N·m
13 ± 2 N·m
9
<4G1>
AC303695AB
1 3
50 ± 10 N·m
2
6
N
N
45
74
N89
59 ± 10 N·m 45 ± 5 N·m13 ± 2 N·m
45 ± 5 N·m
13 ± 2 N·m
9
<4G6>
Exhaust main muffler removal
steps
1. Exhaust main muffler
3. Exhaust pipe gasket
4. Exhaust muffler hanger
Centre exhaust pipe removal
steps
2. Centre exhaust pipe
3. Exhaust pipe gasket
7. Exhaust pipe gasketFront exhaust pipe removal
steps
<> >>A<<5. Engine control oxygen sensor
(rear)
6. Front exhaust pipe
7. Exhaust pipe gasket
8. Exhaust pipe gasket
9. Exhaust muffler hanger

EXHAUST PIPE AND MAIN MUFFLER
INTAKE AND EXHAUST15-12
REMOVAL SERVICE POINT
<> ENGINE CONTROL OXYGEN
SENSOR (REAR) REMOVAL
Use special tool oxygen sensor wrench (MD998770)
to remove the engine control oxygen sensor (rear).
INSTALLATION SERVICE POINT
>>A<< ENGINE CONTROL OXYGEN
SENSOR (REAR) INSTALLATION
Use special tool oxygen sensor wrench (MD998770)
to install the engine control oxygen sensor (rear).
AC212566AD
MD998770
Engine control
oxygen sensor
(rear)
AC212566AD
MD998770
Engine control
oxygen sensor
(rear)

IGNITION SYSTEM
ENGINE ELECTRICAL16-30
IGNITION SYSTEM
GENERAL INFORMATIONM1163000100294
This system is equipped with two ignition coils (A and
B) with built-in power transistors for the No. 1 and
No. 4 cylinders and the No. 2 and No. 3 cylinders
respectively.
Interruption of the primary current flowing in the
primary side of ignition coil A generates a high
voltage in the secondary side of ignition coil A. The
high voltage thus generated is applied to the spark
plugs of No. 1 and No. 4 cylinders to generate
sparks. At the time that the sparks are generated at
both spark plugs, if one cylinder is at the
compression stroke, the other cylinder is at the
exhaust stroke, so that ignition of the compressed
air/fuel mixture occurs only for the cylinder which is
at the compression stroke.
In the same way, when the primary current flowing in
ignition coil B is interrupted, the high voltage thus
generated is applied to the spark plugs of No. 2 and
No. 3 cylinders.The engine-ECU or engine-A/T-ECU
turns the two power transistors inside the ignition
coils alternately on and off. This causes the primary
currents in the ignition coils to be alternately
interrupted and allowed to flow to fire the cylinders in
the order 1-3-4-2.
The engine-ECU or engine-A/T-ECU
determines which ignition coil should be controlled
by means of the signals from the camshaft position
sensor which is incorporated in the camshaft and
from the crank angle sensor which is incorporated in
the crankshaft. It also detects the crankshaft position
in order to provide ignition at the most appropriate
timing in response to the engine operation
conditions. It also detects the crankshaft position in
order to provide ignition at the most appropriate
timing in response to the engine operation
conditions.
When the engine is cold or operated at high
altitudes, the ignition timing is slightly advanced to
provide optimum performance.
When the automatic transmission shifts gears, the
ignition timing is also retarded in order to reduce
output torque, thereby alleviating shifting shocks.
SYSTEM DIAGRAM
AK101074
Air flow sensor
<4G6> MAP sensor <4G1>
Intake air temperatur
sensor
Engine coolant
temperature sensor
Camshaft position
sensor
Crank angle sensor
Barometric pressure
sonsor <4G6>
Detonatoin sensor
Ignition switch-STEngine-A/T-
ECU Engine-ECU
Ignition coil B
Cylinder No.
23 4
AG
1 Spark plugIgnition coil AIgnition
switch
Battery

IGNITION SYSTEM
ENGINE ELECTRICAL16-43
DETONATION SENSOR
REMOVAL AND INSTALLATIONM1163002800556
CAUTION
Do not drop or hit the detonation sensor against other components. Internal damage may result, and
the detonation sensor will need to be replaced.
AC303971
21
23 ± 2 N·m
AB
<4G1>Cylinder block
(Intake side)
AC303972
21
23 ± 2 N·mAB
<4G6>Inlet manifold
Removal steps
1. Engine control detonation sensor
connector
<> >>A<<2. Engine control detonation sensor

EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-7
VACUUM CIRCUIT DIAGRAMM1173007100263
AK300765
From
air
cleaner To
combustion
chamberThrottle body
B R
AB
Intake manifold
Y G
G
GR L
Fuel
pressure
regulator
EGR
valveEGR
control
solenoid
valvePurge
control
solenoid
valveCanister
Vacuum hose colour
B: Black
G: Green
R: Red
Y: Yellow
L: Blue
<4G1>
AK300766
From
air
cleaner To
combustion
chamberThrottle body
B B
AB
Intake manifold
Y R
GW L
Fuel
pressure
regulator
EGR
valveEGR
control
solenoid
valve
Purge
control
solenoid
valveCanister
Vacuum hose colour
B: Black
G: Green
R: Red
W: White
Y: Yellow
L: Blue
<4G6>
B