Mitsubishi Colt Ralliart. Manual - part 125

 

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Mitsubishi Colt Ralliart. Manual - part 125

 

 

IGNITION SYSTEM

ENGINE ELECTRICAL

16-34

SPARK PLUG SPECIFICATIONS

Item

Specification

BOSCH <4A9>

FR7SI30

NGK <4G1>

IZFR6C-K

SERVICE SPECIFICATIONS

M1163000300373

SPARK PLUG

Item

Standard value

Limit

Spark plug gap mm

4A9

1.0 

− 1.1

1.4

4G1

0.7 

− 0.8

0.95

SEALANT <4A9>

M1163000500043

Item

Specified sealant

Remark

Cylinder block

LOCTITE 5971 or exact equivalent

Semi-drying sealant

ON-VEHICLE SERVICE

IGNITION COIL (WITH BUILT-IN POWER TRANSISTOR) CHECK

M1163001200711

Check by the following procedure, and replace if 
there is a malfunction.

PRIMARY COIL AND POWER TRANSIS-
TOR CONTINUITY CHECK

NOTE: 

.

•

AK202356

1 2 3

AG

4.5 – 9.0 V

–

+

–

+

 An analogue-type circuit tester should be used.

•

Connect the negative (-) prove of the circuit tester 
to terminal No. 1.

CAUTION

This test must be performed quickly (in less 

than 10 seconds) to prevent coil from burning 
and power transistor from breakage.
Connect and disconnect 4.5 

− 9.0 V battery between 

terminal No. 2 and No. 3, and observe the ohmmeter 
whether there is continuity or not.

4.5 

− 9.0 V power 

supply between 2 

− 3

Continuity between 

 

1 

− 2

When current is flowing

Continuity

When current is not 
flowing

No continuity

SECONDARY COIL CHECK

NOTE: It is impossible to check the secondary coil 
through the continuity check as a diode is integrated 
in the secondary coil circuit of this ignition coil. 
Accordingly, check the secondary coil in the following 
procedure.
1. Disconnect the ignition coil connector.
2. Remove the ignition coil and install a good spark 

plug to the ignition coil.

3. Connect the ignition coil connector.
4. Earth the side electrode of the spark plug and 

crank the engine.

5. Check that spark is produced between the 

electrodes of the spark plug.

6. If no spark plug is produced, replace the ignition 

coil with a good one and recheck.

7. If spark is produced with the good ignition coil, 

replace the old one as it is faulty. If no spark is 
produced again, the ignition circuit is suspected 
as faulty. Check the ignition circuit.

Main

Index

Group

TOC

IGNITION SYSTEM

ENGINE ELECTRICAL

16-35

SPARK PLUG CHECK AND CLEANING

M1163004300933

CAUTION

• Never attempt to adjust the gap of  the iridium 

plug.

• Do not attempt to clean the spark plug 

because it may result in damage to the elec-
trode. However, if remarkable carbon deposits 
must be removed, using a plug cleaner, com-
plete the cleaning within 20 seconds to pro-
tect the electrode. Do not use a wire brush.

NOTE: As the prospective distance for this spark 
plug replacement is 100,000 km. If the plug gap and 
insulation resistance are normal, check the plug state 
and clean it if necessary.

SPARK PLUG GAP CHECK

AKX01272AG

Plug gap gauge

Measurement
direction

Check the plug gap with the wire type plug gap 
gauge. Replace it if the limit is exceeded.

Standard value, limit:

Manufacturer Type

Standard 
value (mm)

Limit (mm)

BOSCH 
<4A9>

FR7SI30

1.0 

− 1.1

1.4

NGK <4G1> IZFR6C-K

0.7 

− 0.8

0.95

SPARK PLUG INSULATION RESISTANCE 
CHECK

AK503737

1. Measure the insulation resistance. If the insulation 

resistance of the spark plug is not within the 
limited value, clean the plug within 20 seconds 
using a plug cleaner.

2. After cleaning, measure the insulation resistance 

again. Replace the plug unless it is within the 
limited value.

Limit: 10 M

Ω

CAMSHAFT POSITION SENSOR CHECK

M1163004400576

Check the camshaft position sensor circuit if 
self-diagnosis code No. P0340 is shown.

(Refer to GROUP 13A 

− Troubleshooting − Inspec-

tion chart for diagnosis code 

P.13A-20

 <4A9>, 

GROUP 13B 

− Troubleshooting − Inspection chart 

for diagnosis code 

P.13B-18

 <4G1>).

CRANK ANGLE SENSOR CHECK

M1163004500636

Check the crank angle sensor circuit if self-diagnosis 
code No. P0335 is shown.

(Refer to GROUP 13A 

− Troubleshooting − Inspec-

tion chart for diagnosis code 

P.13A-20

 <4A9>, 

GROUP 13B 

− Troubleshooting − Inspection chart 

for diagnosis code 

P.13B-18

 <4G1>).

DETONATION SENSOR CHECK

M1163002900285

Check the detonation sensor circuit if self-diagnosis 
code No. P0325 is shown. 

(Refer to GROUP 13A 

− Troubleshooting − Inspec-

tion chart for diagnosis code 

P.13A-20

 <4A9>, 

GROUP 13B 

− Troubleshooting − Inspection chart 

for diagnosis code 

P.13B-18

 <4G1>). 

Main

Index

Group

TOC

IGNITION SYSTEM

ENGINE ELECTRICAL

16-36

IGNITION COIL

REMOVAL AND INSTALLATION <4A9>

M1163004000783

Pre-removal Operation
• Engine Cover Removal (Refer to GROUP 11A, Camshaft 

P.11A-17

).

Post-installation Operation
• Engine Cover Installation (Refer to GROUP 11A, Cam-

shaft 

P.11A-17

).

AC312256 AB

8.4 ± 0.6 N·m

25 ± 5 N·m

1

3

2

Removal steps 

1.

Ignition coil connectors

2.

Ignition coils

3.

Spark plugs

Removal steps (Continued)

Main

Index

Group

TOC

IGNITION SYSTEM

ENGINE ELECTRICAL

16-37

REMOVAL AND INSTALLATION <4G1>

M1163004000794

Pre-removal Operation
• Engine Cover Removal (Refer to GROUP 11C, Camshaft 

and Valve Stem Seal 

P.11C-20

).

Post-installation Operation
• Engine Cover Installation (Refer to GROUP 11C, Cam-

shaft and Valve Stem Seal 

P.11C-20

).

AC402111AB

10 ± 2 N·m

25 ± 5 N·m

1

3

2

Removal steps 

1.

Ignition coil connectors

2.

Ignition coils

3.

Spark plugs

Removal steps (Continued)

Main

Index

Group

TOC

 

 

 

 

 

 

 

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