Mitsubishi Lancer Evolution IX. Manual - part 354

IGNITION SYSTEM

ENGINE ELECTRICAL

16-33

EXAMPLES OF ABNORMAL WAVE-
FORMS

AKX00280

Example 1

• Wave characteristics

Spark line is high and short.

• Cause of problem

Spark plug gap is too large.

AKX00281

Example 2

• Wave characteristics

Spark 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.

• Cause of problem

Spark plug gap is too small.

AKX00282

Example 3

• Wave characteristics

Spark line is low and long, and is sloping. How-

ever, there is almost no spark line distortion.

• Cause of problem

Spark plug gap is fouled.

AKX00283

Example 4

• Wave characteristics

Spark line is high and short.
Difficult to distinguish between this and abnormal 

waveform example 1.

• Cause of problem

Spark plug cable is nearly falling off (Causing a 

dual ignition).

AKX00284

Example 5

• Wave characteristics

No waves in wave damping section.

• Cause of problem

Layer short in ignition coil.

IGNITION SYSTEM

ENGINE ELECTRICAL

16-34

IGNITION COIL

REMOVAL AND INSTALLATION

M1163004000909

Pre-removal and Post-installation Operation
• Rocker Cover Centre Cover Removal and Installation 

(Refer to GROUP 11A, Camshaft and Valve Stem Seal 

P.11A-17

).

AC210297

1

1

4

2

3

4

10 ± 2 N·m

25 ± 4 N·m

AB

5

Removal steps 

1.

Ignition coil connectors

2.

Spark plug cable No. 1

3.

Spark plug cable No. 3

4.

Ignition coils

5.

Spark plugs

Removal steps (Continued)

IGNITION SYSTEM

ENGINE ELECTRICAL

16-35

CAMSHAFT POSITION SENSOR

REMOVAL AND INSTALLATION

M1163003400829

AC407255
AC505000

4

1

2

6

5

N

AB

3

N

10.5 ± 0.5 N·m

10.5 ± 0.5 N·m

Removal steps <exhaust side> 

1.

Camshaft position sensor 
connector

2.

Camshaft position sensor

3.

O-ring

Removal steps <inlet side> 

4.

Camshaft position sensor 
connector

5.

Camshaft position sensor

6.

O-ring

IGNITION SYSTEM

ENGINE ELECTRICAL

16-36

CRANK ANGLE SENSOR

REMOVAL AND INSTALLATION

M1163004800143

CAUTION

If the vehicle is equipped with the Brembo

™ disc brake, during maintenance, take care not to contact 

the caliper with tool or parts, because the caliper paint will be scratched.

Pre-removal and Post-installation Operation
• Timing Belt Removal and Installation (Refer to GROUP 

11A,Timing Belt 

P.11A-36

).

• Radiator Reserve Tank Assembly Removal and Installa-

tion (Refer to GROUP 14, Radiator 

P.14-24

).

AC210409

1

5

6

AB

2

22 ± 4 N·m

22 ± 4 N·m

3

4

40 ± 5 N·m

22 ± 4 N·m

12 ± 2 N·m

12 ± 2 N·m

49 ± 9 N·m

49 ± 9 N·m

8.8 ± 1.0 N·m

Removal steps 

1.

Power steering pressure switch 
connector

2.

Power steering oil pump heat 
protector

<<

A

>>

3.

Power steering oil pump, bracket 
and oil reservoir assembly

4.

Power steering oil pump bracket

5.

Crank angle sensor connector

6.

Crank angle sensor

Removal steps (Continued)