Subaru 2001 Forester Manuale utente

This service manual has been prepared

to provide SUBARU service personnel

with the necessary information and data

for the correct maintenance and repair of

SUBARU vehicles.

This manual includes the procedures for

maintenance, disassembling, reassem-

bling, inspection and adjustment of com-

ponents and diagnostics for guidance of

experienced mechanics.

Please peruse and utilize this manual

fully to ensure complete repair work for

satisfying our customers by keeping their

vehicle in optimum condition. When

replacement of parts during repair work is

needed, be sure to use SUBARU genu-

ine parts.

All information, illustration and specifica-

tions contained in this manual are based

on the latest product information avail-

able at the time of publication approval.

FUJI HEAVY INDUSTRIES LTD.

2001 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX

ENGINE2 SECTION

G8050GE3

IGNITION

IG(SOHCw/oOBD)

Page

1. General Description.....................................................................................2

2. Spark Plug...................................................................................................5

3. Ignition Coil and Ignitor Assembly...............................................................9

4. Spark Plug Cord........................................................................................11

1. General Description S161001

A: SPECIFICATIONS S161001E49

Item Designation

Ignition coil and ignitor

assembly

Model CM12–100B

Manufacturer HITACHI

Primary coil resistance 0.7 Ω±10%

Secondary coil resistance 13.0 kΩ±20%

Insulation resistance between primary terminal

and case More than 10 MΩ

Spark plug

Type and manufacturer BKR6E* .......... NGK

RC10YC4** .......... CHAMPION

BKR5E-11** .......... NGK (Alternate)

Thread size mm 14, P = 1.25

Spark gap mm (in) 0.7 —0.8 mm (0.028 —0.031 in)*

1.0 —1.1 mm (0.039 —0.043 in)**

*: Without catalytic converter

**: With catalytic converter

IG(SOHCw/oOBD)-2

GENERAL DESCRIPTION

Ignition

B: COMPONENT S161001A05

S6M0139B

(1) Spark plug

(2) Spark plug cord (#1, #3)

(3) Ignition coil and ignitor ASSY

(4) Spark plug cord (#2, #4) Tightening torque: N·m (kgf-m, ft-lb)

T1: 6.4 (0.65, 4.7)

T2: 21 (2.1, 15)

C: CAUTION S161001A03

쐌Wear working clothing, including a cap, protec-

tive goggles, and protective shoes during opera-

tion.

쐌Remove contamination including dirt and corro-

sion before removal, installation or disassembly.

쐌Keep the disassembled parts in order and pro-

tect them from dust or dirt.

쐌Before removal, installation or disassembly, be

sure to clarify the failure. Avoid unnecessary

removal, installation, disassembly, and replace-

ment.

쐌Be careful not to burn your hands, because each

part on the vehicle is hot after running.

쐌Be sure to tighten fasteners including bolts and

nuts to the specified torque.

쐌Place shop jacks or safety stands at the speci-

fied points.

쐌Before disconnecting electrical connectors of

sensors or units, be sure to disconnect negative

terminal from battery.

IG(SOHCw/oOBD)-3

GENERAL DESCRIPTION Ignition

D: PREPARATION TOOL S161001A17

ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS

S2M2137A

498307600 CHECK BOARD KIT Troubleshooting for engine electrical systems

(1) CHECK BOARD: 498307610

(2) CHECK BOARD ADAPTER: 498307620

IG(SOHCw/oOBD)-4

GENERAL DESCRIPTION

Ignition

2. Spark Plug S161003

A: REMOVAL S161003A18

CAUTION:

All spark plugs installed on an engine, must be

of the same heat range.

Spark plug:

With catalyst model: CHAMPION

RC10YC4

Without catalyst model: NGK BKR6E

1. RH SIDE S161003A1805

1) Disconnect battery ground cable.

G6M0095

2) Remove air intake duct and resonator chamber.

(1) Remove bolt which installs air intake duct

on the front side of body.

S6M0708

(2) Remove bolt which installs air intake duct

on body.

B6M1302

(3) Remove air intake duct as a unit.

B2M2012

(4) Remove resonator chamber.

B2M2306

3) Remove spark plug cords by pulling boot, not

cord itself.

S2M2135

4) Remove spark plugs with the spark plug socket.

B6M0923

IG(SOHCw/oOBD)-5

SPARK PLUG Ignition

2. LH SIDE S161003A1806

1) Disconnect battery ground cable.

G6M0095

2) Disconnect washer motor connector.

S2M0546

3) Disconnect rear window glass washer hose

from washer motor, then plug connection with a

suitable cap.

4) Remove the two bolts which hold the washer

tank, then take the tank away from the working

area.

B2M2023

5) Remove spark plugs cord by pulling boot, not

cord itself.

S2M2136

6) Remove spark plug with the spark plug socket.

B6M0926

B: INSTALLATION S161003A11

1. RH SIDE S161003A1105

Install in the reverse order of removal.

Tightening torque (Spark plug):

21 N·m (2.1 kgf-m, 15 ft-lb)

CAUTION:

The above torque should be only applied to

new spark plugs without oil on their threads.

In case their threads are lubricated, the torque

should be reduced by approximately 1/3 of the

specified torque in order to avoid over-stress-

ing.

Tightening torque (Resonator chamber):

32 N·m (3.3 kgf-m, 24 ft-lb)

2. LH SIDE S161003A1106

Install in the reverse order of removal.

Tightening torque (Spark plug):

21 N·m (2.1 kgf-m, 15 ft-lb)

CAUTION:

The above torque should be only applied to

new spark plugs without oil on their threads.

In case their threads are lubricated, the torque

should be reduced by approximately 1/3 of the

specified torque in order to avoid over-stress-

ing.

IG(SOHCw/oOBD)-6

SPARK PLUG

Ignition

C: INSPECTION S161003A10

Check electrodes and inner and outer porcelain of

plugs, noting the type of deposits and the degree

of electrode erosion.

S6M0420A

(A) Electrode gap

(B) Carbon accumulation or wear

(D) Damage

(E) Damaged gasket

1) Normal

Brown to grayish-tan deposits and slight electrode

wear indicate correct spark plug heat range.

G6M0087

2) Carbon fouled

Dry fluffy carbon deposits on insulator and elec-

trode are mostly caused by slow speed driving in

city, weak ignition, too rich fuel mixture, dirty air

cleaner, etc.

It is advisable to replace with plugs having hotter

heat range.

G6M0088

3) Oil fouled

Wet black deposits show excessive oil entrance

into combustion chamber through worn rings and

pistons or excessive clearance between valve

guides and stems. If same condition remains after

repair, use a hotter plug.

G6M0089

4) Overheating

White or light gray insulator with black or gray

brown spots and bluish burnt electrodes indicate

engine overheating. Moreover, the appearance

results from incorrect ignition timing, loose spark

plugs, wrong selection of fuel, hotter range plug,

etc. It is advisable to replace with plugs having

colder heat range.

G6M0090

D: CLEANING S161003E56

Clean spark plugs in a sand blast type cleaner.

Avoid excessive blasting. Clean and remove car-

bon or oxide deposits, but do not wear away por-

celain.

If deposits are too stubborn, replace plugs.

IG(SOHCw/oOBD)-7

SPARK PLUG Ignition

E: ADJUSTMENT S161003A01

Correct it if the spark plug gap is measured with a

gap gauge, and it is necessary.

Spark plug gap: L

With catalyst:

1.0 —1.1 mm (0.039 —0.043 in)

Without catalyst:

0.7 —0.8 mm (0.028 —0.031 in)

S6M0412A

NOTE:

Replace with new spark plug if this area is worn to

“ball”shape.

IG(SOHCw/oOBD)-8

SPARK PLUG

Ignition

3. Ignition Coil and Ignitor

Assembly S161015

A: REMOVAL S161015A18

1) Disconnect battery ground cable.

G6M0095

2) Disconnect spark plug cords from ignition coil

and ignitor assembly.

S6M0372

3) Disconnect connector from ignition coil and

ignitor assembly.

S6M0366

4) Remove ignition coil and ignitor assembly.

S6M0371

B: INSTALLATION S161015A11

Install in the reverse order of removal.

Tightening torque:

6.4 N·m (0.65 kgf-m, 4.7 ft-lb)

CAUTION:

Be sure to connect wires to their proper posi-

tions. Failure to do so will damage unit.

S6M0371

IG(SOHCw/oOBD)-9

IGNITION COIL AND IGNITOR ASSEMBLY Ignition

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