SUBARU TRIBECA 2009 1.G Service Workshop Manual

IG(H6DO)-6
Spark Plug
IGNITION
2) Carbon fouled:
Dry fluffy carbon deposits on insulator and elec-
trode are mostly caused by slow speed driving in
the city, weak ignition, too rich fuel mixture and dirty
air cleaner.
3) Oil fouled:
Wet black deposits show oil entrance into the com-
bustion chamber through worn rings and pistons or
excessive clearance between valve guides and
stems.
4) Overheating:
White or light gray insulator with black or 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.
D: ADJUSTMENT
Clean the spark plugs using a wire brush. Clean
and remove the carbon or oxide deposits. But do
not wear away ceramic insulator at this time. If de-
posits are too stubborn, replace the spark plugs.
After cleaning the spark plugs, measure the spark
plug gap using a gap gauge.
NOTE:
Do not use a plug cleaner because the spark plugs
are applied with iridium tip.
Spark plug gap L:
0.7 — 0.8 mm (0.028 — 0.031 in)
IG-00012
IG-00013
IG-00014
IG-02035
L

IG(H6DO)-7
Ignition Coil & Ignitor Assembly
IGNITION
3. Ignition Coil & Ignitor Assem-
bly
A: REMOVAL
Direct ignition type has been adopted. Refer to
“Spark Plug” for removal procedure. <Ref. to
IG(H6DO)-4, REMOVAL, Spark Plug.>
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
16 N·m (1.6 kgf-m, 11.7 ft-lb)
C: INSPECTION
For inspection procedure, refer to “Diagnostics for
Engine Starting Failure.” <Ref. to EN(H6DO)(diag)-
63, IGNITION CONTROL SYSTEM, Diagnostics
for Engine Starting Failure.>

IG(H6DO)-8
Ignition Coil & Ignitor Assembly
IGNITION

IN(H6DO)-2
General Description
INTAKE (INDUCTION)
1. General Description
A: COMPONENT
(12)
(17)
(16)
(15)
(11)
T1
(6)
(6)
(5)
(5)
(9)
(9)
(8)(18)
(7)
(4)
(17)
(19)
(3)
(1)
(2)
(6)
(5)
T3
T3
(13)
T2
(14)
(13)
(14)
T4
T4
T5
(10)
T3
(2)
IN-02132
T1

IN(H6DO)-3
General Description
INTAKE (INDUCTION)
B: CAUTION
•Wear work clothing, including a cap, protective
goggles and protective shoes during operation.
•Remove contamination including dirt and corro-
sion before removal, installation or disassembly.
•Keep the disassembled parts in order and pro-
tect them from dust and dirt.
•Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly and replacement.
•Be careful not to burn yourself, because each
part on the vehicle is hot after running.
•Be sure to tighten fasteners including bolts and
nuts to the specified torque.
•Place shop jacks or rigid racks at the specified
points.
•Before disconnecting connectors of sensors or
units, be sure to disconnect the ground cable from
the battery.
(1) Air intake duct (11) Intake duct (19) Air cleaner bracket
(2) Clip (12) Clamp
(3) Resonator chamber (13) CushionTightening torque: N·m (kgf-m, ft-lb)
(4) Air cleaner case (front) (14) SpacerT1: 6.0 (0.6, 4.4)
(5) Spacer (15) Air intake chamberT2: 6.4 (0.65, 4.7)
(6) Cushion (16) Collector cover bracketT3: 3.0 (0.3, 2.2)
(7) Air cleaner element (17) CushionT4: 7.5 (0.76, 5.5)
(8) Air cleaner case (rear) (18) Mass air flow and intake air tem-
perature sensor
T5: 1.0 (0.10, 0.7)
(9) Clip
(10) Clamp

IN(H6DO)-4
Air Cleaner Element
INTAKE (INDUCTION)
2. Air Cleaner Element
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Disconnect the connector from mass air flow and
intake air temperature sensor.
3) Remove the clip (A) securing upper side of air
cleaner case.
4) Pull the air cleaner case (rear) backward of the
vehicle, and remove the air cleaner element.
B: INSTALLATION
Install in the reverse order of removal.
NOTE:
Fasten with a clip after inserting the lower tab of
case.
C: INSPECTION
Replace if excessively damaged or dirty.
IN-02143
IN-02144
(A)
IN-02145

IN(H6DO)-5
Air Cleaner Case
INTAKE (INDUCTION)
3. Air Cleaner Case
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the air intake duct. <Ref. to IN(H6DO)-
7, REMOVAL, Air Intake Duct.>
3) Disconnect the connector from mass air flow and
intake air temperature sensor.
4) Loosen the clamps (A) which connect the air
cleaner case to intake duct.
5) Remove the clip (B) securing the upper side of
air cleaner case.
6) Remove the air cleaner case (rear) and air
cleaner element.
7) Remove the bolts (A) and nut (B) which secure
the air cleaner case to body.
8) Remove the air cleaner case (front).
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
Bolt (A): 6.0 N·m (0.6 kgf-m, 4.4 ft-lb)
Nut (B): 7.5 N·m (0.76 kgf-m, 5.5 ft-lb)
NOTE:
Fasten with a clip after inserting the lower tab of
case.
C: INSPECTION
Check for cracks or loose connections.
IN-02143
IN-02146
(B)
(A)
IN-02148
(B)(A)
IN-02148
(B)(A)
IN-02145

IN(H6DO)-6
Air Intake Chamber
INTAKE (INDUCTION)
4. Air Intake Chamber
A: REMOVAL
1) Remove the collector cover.
2) Loosen the clamp (A) which connects air intake
chamber to throttle body.
3) Loosen the clamp (B) which connects intake
duct to air intake chamber.
4) Remove the bolt (C) which secures air intake
chamber to the collector cover bracket.
5) Disconnect the blow-by hoses, and then remove
air intake chamber.
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
Clamp (A), (B)
3.0 N·m (0.3 kgf-m, 2.2 ft-lb)
Bolt (C)
6.4 N·m (0.65 kgf-m, 4.7 ft-lb)
C: INSPECTION
1) Check for cracks or loose connections.
2) Check that no foreign matter is mixed in air in-
take chamber.
(A)
(C)(C)
(B)
IN-02133
(A)
(C)(C)
(B)
IN-02133

IN(H6DO)-7
Air Intake Duct
INTAKE (INDUCTION)
5. Air Intake Duct
A: REMOVAL
1) Remove the clip holding the air intake duct.
2) Remove the air intake duct.
B: INSTALLATION
Install in the reverse order of removal.
C: INSPECTION
1) Check for cracks or loose connections.
2) Check that no foreign matter is mixed in air in-
take duct.
IN-02134

IN(H6DO)-8
Resonator Chamber
INTAKE (INDUCTION)
6. Resonator Chamber
A: REMOVAL
The resonator chamber and air cleaner case are in-
tegrated into one unit; therefore, refer to “Air Clean-
er Case” for removal procedure. <Ref. to
IN(H6DO)-5, REMOVAL, Air Cleaner Case.>
B: INSTALLATION
The resonator chamber and air cleaner case are in-
tegrated into one unit; therefore, refer to “Air Clean-
er Case” for installation procedure. <Ref. to
IN(H6DO)-5, INSTALLATION, Air Cleaner Case.>
C: INSPECTION
Check for cracks or loose connections.