2007 MITSUBISHI LANCER EVOLUTION engine

ENGINE ELECTRICAL -Ignition System16-31
STANDARD WAVEFORM
Observation Conditions
FunctionSecondary
Pattern heightHigh (or Low)
Pattern selectorRaster
Engine revolutionsCurb idle speed
kV
Secondary
ignition
voltage
waveformIgnition voltage
(point D)
Dwell
section
Point CSpark line (point A)
Wave damping
reduction section
(point B)
Time
Observation Condition (The only change from above condition is the pattern selector.)
Pattern selectorDisplay
Secondary
ignition
voltage
waveformkV
No. 4 cylinder
No. 2 cylinder
ignition noiseNo. 1 cylinderNo. 3 cylinder
ignition noise
Neutral section 0
2Time

ENGINE ELECTRICAL -Ignition System16-32
WAVEFORM OBSERVATION POINTS
Point A: The height, length and slope of the spark line show the following trends (Refer to abnormal
waveform examples, 1, 2, 3 and 4).
Spark linePlug gapCondition of
electrodeCompression
forceConcentration of
air mixtureIgnition timingSpark plug
cable
LengthLongSmallNormalLowRichAdvancedLeak
ShortLargeLarge wearHighLeanRetardedHigh
resistance
HeightHighLargeLarge wearHighLeanRetardedHigh
resistance
LowSmallNormalLowRichAdvancedLeak
SlopeLargePlug is fouled----
Point B: Number of vibration in reduction vibration section (Refer to abnormal waveform example 5)
Number of vibrationsCoil and condenser
Three or moreNormal
Except aboveAbnormal
Point C: Number of vibrations at beginning of dwell section (Refer to abnormal waveform example 5)
Number of vibrationsCoil
5 - 6 or higherNormal
Except aboveAbnormal
Point D: Ignition voltage height (distribution per each cylinder) shows the following trends.
Ignition
voltagePlug gapCondition of
electrodeCompression
forceConcentration of
air mixtureIgnition timingSpark plug cable
HighLargeLarge wearHighLeanRetardedHigh resistance
LowSmallNormalLowRichAdvancedLeak

ENGINE ELECTRICAL -Ignition System16-33
EXAMPLES OF ABNORMAL WAVEFORMS
Abnormal waveformWave characteristicsCause of problem
Example 1
01P0215
Spark line is high and short.Spark plug gap is too large.
Example 2Spark line is low and long, and is
sloping.
Also, the second half of the spark line
is distorted. This could be a result of
misfiring.Spark plug gap is too small.
Example 3Spark line is low and long, and is
sloping. However, there is almost no
spark line distortion.Spark plug gap is fouled.
Example 4Spark line is high and short.
Difficult to distinguish between this
and abnormal waveform example 1.Spark plug cable is nearly falling off.
(Causing a dual ignition)
Example 5No waves in wave damping section.Layer short in ignition coil

ENGINE ELECTRICAL -Ignition System16-34
IGNITION COIL
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
Center Cover Removal and Installation (Refer to GROUP 11A - Camshaft and Camshaft Oil Seal.)
10±2 N·m
12
25±4 N·m
3
4
14
5
10±2 N·m
Removal steps
1. Ignition coil connector
2. Spark plug cable No.1
3. Spark plug cable No.34. Ignition coil
5. Spark plug

ENGINE ELECTRICAL -Ignition System16-35
CAMSHAFT POSITION SENSOR
REMOVAL AND INSTALLATION
1 2
3
8.8±1.0 N·m
Removal steps
1. Camshaft position sensor connector
2. Camshaft position sensor
3. O-ring
CRANK ANGLE SENSOR
REMOVAL AND INSTALLATION
Caution
If the vehicle is equipped with the Brembo disc brake, during maintenance, take care not to contact
the parts or tools to the caliper because the paint of caliper will be scratched.
Pre-removal and Post-installation Operation
DCenter Cover Removal and Installation (Refer to GROUP 11A - Camshaft and Camshaft Oil Seal.)
DTiming Belt Removal and Installation (Refer to GROUP 11A.)
DReserve Tank Removal and Installation (Refer to GROUP 14 - Radiator.)

ENGINE ELECTRICAL -Ignition System16-36
12
3
8.8±1.0 N·m
4 5
6 7
8.8±1.0 N·m49±9 N·m
49±9 N·m40±5 N·m 12±2 N·m
22±4 N·m
22±4 N·m
12±2 N·m
22±4 N·m
Removal steps
1. Power steering oil pressure switch
connector
2. Heat protector
AA"3. Power steering oil pump, bracket and
oil reservoir assembly4. Power steering oil pump bracket
5. Crank angle sensor connector
6. Crank angle sensor
7. Connector bracket
REMOVAL SERVICE POINT
AA"POWER STEERING OIL PUMP, BRACKET AND
OIL RESERVOIR ASSEMBLY REMOVAL
Remove the power steering oil pump, bracket and oil reservoir
assembly with the hose attached from the bracket.
NOTE
Tie the removed oil pump with a rope and set aside where
they cannot hinder the removal of the power steering oil pump
bracket.

ENGINE ELECTRICAL -Ignition System16-37
DETONATION SENSOR
REMOVAL AND INSTALLATION
Caution
Do not give any impact during removal and installation of detonation sensor.
Pre-removal and Post-installation Operation
Intake Manifold Stay Removal and Installation (Refer to GROUP 15 - Intake Manifold.)
1
2
23±2 N·m
Removal steps
1. Detonation sensor connector
AA""AA2. Detonation sensor
REMOVAL SERVICE POINT
AA"DETONATION SENSOR REMOVAL
INSTALLATION SERVICE POINT
"AADETONATION SENSOR INSTALLATION
MD998773

17-1
ENGINE AND
EMISSION
CONTROL
CONTENTS
ENGINE CONTROL SYSTEM 2.........
GENERAL INFORMATION 2................
SERVICE SPECIFICATIONS 2...............
ON-VEHICLE SERVICE 2...................
Accelerator Cable Check and
Adjustment 2................................
ACCELERATOR CABLE AND PEDAL 3......
EMISSION CONTROL SYSTEM 4......
GENERAL INFORMATION 4................
Emission Control Device Reference
Table 4.....................................
SERVICE SPECIFICATIONS 5..............
VACUUM HOSE 5..........................
Vacuum Hose Piping Diagram 5..............
Vacuum Circuit Diagram 6....................
Vacuum Hose Check 7......................
Vacuum Hose Installation 7..................
CRANKCASE EMISSION CONTROL
SYSTEM 8................................
General Information 8........................
System Diagram 8..........................
Component Location 9.......................
Positive Crankcase Ventilation System Check 9....
PCV Valve Check 9.........................
EVAPORATIVE EMISSION CONTROL
SYSTEM 10...............................
General Information 10.......................
System Diagram 10..........................
Component Location 10......................
Purge Control System Check 11...............
Purge Port Vacuum Check 11.................
Purge Control Solenoid Valve Check 12.........
Check Valve Check 12.......................
EXHAUST GAS RECIRCULATION (EGR)
SYSTEM 13...............................
General Information 13.......................
Operation 13................................
System Diagram 13..........................
Component Location 14......................
Exhaust Gas Recirculation (EGR) Control System
Check 14...................................
EGR Valve Check 15.........................
EGR Port Vacuum Check 15..................
EGR Control Solenoid Valve Check 16..........
EGR VALVE 17............................
CANISTER 18.............................
CATALYTIC CONVERTER 19................
General Information 19.......................