INFINITI FX35 2008 Service Manual

INTAKE MANIFOLDEM-177
< SERVICE INFORMATION > [VK45DE]
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5. Disconnect fuel feed hose quick connector on engine side.
Refer to EM-190, "
Component".
6. Remove fuel damper and fuel hose assembly. Refer to EM-190, "
Component".
CAUTION:
 While hoses are disconnected, plug th em to prevent fuel from draining.
 Do not separate fuel damper and fuel hose.
7. Remove or disconnect harnesses, engine cover bra cket (RH and LH), vacuum hose, EVAP tube and hose
and PCV hose and tube from intake manifold (upper).
8. Loosen mounting bolts in reverse order as shown in the figure to remove intake manifold (upper) with power tool.
9. Remove electric throttle control actuator as follows:
a. Disconnect harness connector.
b. Loosen mounting bolts diagonally. CAUTION:
 Handle carefully to avoid any shock to electric throttle control actuator.
 Do not disassemble.
10. Remove fuel injector and fuel tube assembly. Refer to EM-190, "
Component".
11. Disconnect water hoses from intake manifold adaptor.
12. Loosen mounting bolts in reverse order as shown in the figure to remove intake manifold (lower) with power tool.
13. Remove intake manifold adaptor from intake manifold (lower).
14. Remove intake manifold gaskets. CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
PBIC4552E
: Engine front
PBIC3297E
: Engine front
PBIC3298E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-178
< SERVICE INFORMATION >[VK45DE]
INTAKE MANIFOLD
 Check the surface distortion of both the intake manifold (upper and
lower) mating surfaces with straightedge and feeler gauge.
 If it exceeds the limit, replac e intake manifolds (lower and/or
upper).
INSTALLATION
Note the following, and install in the reverse order of removal.
Intake Manifold (Lower)
Tighten in numerical order as shown in the figure.
 There are two types of mounting bolts. Refer to the following for locating bolts.
Intake Manifold (Upper)
Tighten in numerical order as shown in the figure.
Electric Throttle Control Actuator
 Install gasket with its directional protrusion set up/downward.
 Tighten mounting bolts of electric throttle cont rol actuator equally and diagonally in several steps.
 After installation perform procedure in "INSPECTION AFTER INSTALLATION".
Water Hose
Insert hose by 27 to 32 mm (1.06 to 1.26 in) from connector end.
Va c u u m H o s e
Refer to EC-684, "Vacuum Hose Drawing".
INSPECTION AFTER INSTALLATION
 Perform the “Throttle Valve Closed Position Learning” when harness connector of electric throttle control
actuator is disconnected. Refer to EC-663, "
Throttle Valve Closed Position Learning".
 Perform the “Idle Air Volume Learning” and “Throttle Valve Closed Position Learning” when electric throttle
control actuator is replaced. Refer to EC-663, "
Idle Air Volume Learning".
Limit : 0.1 mm (0.004 in)
PBIC0016E
: Engine front
M8
× 90 mm (3.54 in) : 7, 8
M8 × 35 mm (1.38 in) : Except the above
PBIC3298E
: Engine front
PBIC3297E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-179
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EXHAUST MANIFOLD AND THREE WAY CATALYST
ComponentINFOID:0000000001325776
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325777
REMOVAL
WARNING:
Perform the work, when the exhaust and cooling system h ave completely cooled down.
1. Remove engine cover with power tool. Refer to EM-169, "
Component".
2. Remove front and rear engine undercovers with power tool.
3. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator assembly. Refer to EM-173, "
Component".
4. Remove front cross bar. Refer to FSU-5, "
On-Vehicle Inspection and Service".
5. Drain engine coolant from radiator. Refer to CO-37, "
Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belts.
1. Air fuel ratio sensor 1 (bank 2) 2. Exhaust manifold cover (right bank) 3. Exhaust manifold (right bank)
4. Gasket 5. Exhaust manifold (left bank) 6. Exhaust manifold cover (left bank)
7. Air fuel ratio sensor 1 (bank 1) 8. Three way catalyst cover (right bank) 9. Three way catalyst (right bank)
10. Heated oxygen sensor 2 (bank 2) 11. Gasket 12. Three way catalyst cover (left bank)
13. Heated oxygen sensor 2 (bank 1) 14. Three way catalyst (left bank) 15. Mounting bracket
16. Mounting bracket
A. Protrusion for installation confirma-
tion.
: Above
PBIC4549E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-180
< SERVICE INFORMATION >[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
6. Remove radiator. Refer to
CO-40, "Component".
7. Remove drive belts. Refer to EM-170, "
Component".
8. Remove air fuel ratio sensor 1 and heated oxygen sensor 2 as follows:
a. Disconnect air fuel ratio sensor 1 and heated oxygen sensor 2 harness connectors.
b. Remove air fuel ratio sensor 1 and heated oxygen sensor 2 on both bank with heated oxy gen sensor wrench (SST).
CAUTION:
 Be careful not to damage air fuel ratio sensor 1 and heated oxygen sensor 2.
 Discard any air fuel ratio sen sor 1 and heated oxygen sen-
sor 2 which have been dropped onto a hard surface such
as a concrete floor: replace with a new one.
9. Remove exhaust mounting bracket between three way catalysts (right and left bank) and transmission. Refer to EX-3, "
Checking Exhaust System".
10. Disconnect A/C piping from A/C compressor, then re move A/C compressor with power tool. Refer to AT C -
121, "Component".
11. Remove alternator and bracket. Refer to SC-19, "
System Description".
12. Remove exhaust front tube with power tool. Refer to EX-3, "
Checking Exhaust System".
13. Remove steering lower joint at power steering gear assembly side, and release steering lower shaft. Refer to PS-17, "
Removal and Installation".
14. Remove three way catalysts (right and left bank).
15. Remove exhaust manifold covers. (right and left bank)
PBIC2333E
PBIC2334E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-181
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16. Loosen mounting nuts in reverse order as shown in the figure to
remove exhaust manifold.
NOTE:
Disregard the numerical order No. 9 to 12 in removal.
17. Remove exhaust manifold gaskets. CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
 Check the surface distortion of the each exhaust manifold flange
mating surface with straightedge and feeler gauge.
 If it exceeds the limit, replace exhaust manifold.
INSTALLATION
Note the following, and install in the reverse order of removal.
Exhaust Manifold Gasket
Install exhaust manifold gasket with its directional protrusion set upward.
Refer to the figure of components on former page. Refer to "Removal and Installation".
Exhaust Manifold
A : Left bank
B : Right bank : Engine front
PBIC3300E
Limit : 0.3 mm (0.012 in)
PBIC1550E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-182
< SERVICE INFORMATION >[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
 Install exhaust manifold and tighten mounting nuts in numerical
order as shown in the figure.
NOTE:
Tighten mounting nuts No. 1 to 4 in two steps. The numerical order
No. 9 to 12 shown second steps.
Air Fuel Ratio Sensor and Heated Oxygen Sensor
 Install air fuel ratio sensors and heated oxygen sensors in the original position.
 Install referring the following if the installation positions cannot be identified.
CAUTION:
 Before installing a new air fuel ratio sensor and heated oxy-
gen sensor, clean exhaust system threads using oxygen sen-
sor thread cleaner (commercial service tool: J-43897-18 or J-
43897-12), and apply anti-seize lubricant (commercial service
tool).
 Do not over torque air fuel ra tio sensor and heated oxygen sensor. Doing so may cause damage to
the heated oxygen sensor, r esulting in “MIL” coming on.
A : Left bank
B : Right bank
: Engine front
PBIC3300E
Glass tube colorAir fuel ratio sensor 1 : Black
Heated oxygen sensor 2 : White
PBIC2652E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

OIL PAN AND OIL STRAINEREM-183
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OIL PAN AND OIL STRAINER
ComponentINFOID:0000000001325778
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325779
REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain engine oil when engine is hot.
1. Remove front road wheels and tires.
2. Remove hood assembly. Refer to BL-13, "
Fitting Adjustment".
3. Remove engine cover with power tool. Refer to EM-169, "
Component".
4. Remove front and rear engine undercovers with power tool.
5. Drain engine oil. Refer to LU-24, "
Changing Engine Oil".
CAUTION:
 Perform this step when engine is cold.
1. Oil pan 2. O-ring 3. Crankshaft position sensor (POS)
4. Baffle plate 5. O-ring 6. Baffle plate
7. Oil pressure switch 8. Gasket 9. Oil strainer
10. Drain plug 11. Drain plug washer 12. O-ring
13. Oil cooler 14. Connector bolt 15. Oil filter
16. O-ring 17. Axle pipe 18. O-ring
19. Rear plate cover 20. Relief valve
A. Oil pan side B. Refer to LU-27
C. Refer to LU-26
PBIC4556E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-184
< SERVICE INFORMATION >[VK45DE]
OIL PAN AND OIL STRAINER
 Do not spill engine oil on drive belts.
6. Drain engine coolant. Refer to CO-37, "
Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belts.
7. Remove drive belts. Refer to EM-170, "
Component".
8. Remove auto tensioner of power steering oil pump belt. Refer to EM-172, "
Drive Belt Auto Tensioner and
Idler Pulley".
9. Remove power steering oil pump with piping connect ed, and temporarily secure it aside with ropes or
equivalent. Refer to PS-27, "
On-Vehicle Inspection and Service".
10. Remove A/C compressor with piping connected, and tem porarily secure it aside with ropes or equivalent.
Refer to ATC-121, "
Component".
11. Remove A/C compressor fitting bolts, and install A/C compressor temporarily on vehicle side with ropes or equivalent.
12. Remove harness of lower side of oil pan.
13. Remove crankshaft position sensor (POS) from transmission. CAUTION:
 Handle carefully to avoid dropping and shocks.
 Do not disassemble it.
 Do not allow metal powder to adhere to magnetic part at sensor tip.
 Do not place sensors in a location wh ere they are exposed to magnetism.
14. Install engine slinger and hang engine assembly to secure position. Refer to EM-237, "
Component".
15. Remove front suspension member with power tool. Refer to FSU-16, "
Removal and Installation".
16. Remove front final drive assembly. Refer to FFD-14, "
Removal and Installation (VQ35DE Models)".
17. Remove oil filter. Refer to LU-26, "
Removal and Installation".
18. Disconnect oil cooler water hoses, and remove oil cooler water pipe and oil cooler. Refer to LU-27, "
Com-
ponent".
19. Remove oil pan as the follows:
a. Remove rear plate cover.
b. Remove transmission joint bolts which pierce oil pan. Refer to AT-243, "
Removal and Installation (AWD
Models)".
c. Loosen mounting bolts with power tool in reverse order as shown in the figure.
NOTE:
Disregard the numerical order No. 11 and 17 in removal.
d. Insert seal cutter (SST) between oil pan and cylinder block. Slide seal cutter by tapping on the side of seal cutter with ham-
mer. Remove oil pan.
CAUTION:
 Be careful not to damage the mating surfaces.
 Do not insert screwdriver, th is will damage the mating
surface.
e. Remove O-rings from bottom of oil pump and front cover.
20. As necessary, pull axle pipe from oil pan.
PBIC0194E
SEM365E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

OIL PAN AND OIL STRAINEREM-185
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 Hold pipes and pull them out to front drive shaft (left) installing side.
21. Remove oil strainer.
INSPECTION AFTER REMOVAL
Clean oil strainer if any object attached.
INSTALLATION
1. Install oil strainer.
2. Install axle pipe to oil pan, if removed.  Lubricate O-ring groove of axle pipe, O-ring, and O-ring joint ofoil pan with new engine oil.
 Right/left O-ring diameters differ from each other. O-ring with
identification paint mark is installed on front drive shaft (left)
installing side.
 Install axle pipe to oil pan from (left) side.
CAUTION:
Insert it with care to prevent O-ring from sliding.
3. Install oil pan as follows:
a. Use scraper to remove old liquid gasket from mating surfaces.  Also remove the old liquid gasket from mating surface of cylinder block.
 Remove old liquid gasket from the bolt holes and threads.
CAUTION:
Do not scratch or damage the mating su rfaces when cleaning off old liquid gasket.
b. Install new O-rings to oil pump and front cover side.
c. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to the cylinder block mating surfaces
of oil pan to a limited portion as shown in the figure.
Use Genuine RTV Silicone Seal ant or equivalent. Refer to
GI-44, "
Recommended Chemical Product and Sealant".
CAUTION:
Attaching should be done wi thin 5 minutes after coating.
d. Install oil pan. CAUTION:
Install avoiding misal ignment of O-rings.
 Tighten mounting bolts in numerical order as shown in the fig- ure.
NOTE:
Tighten mounting bolts No. 1 and 2 in two steps. The numeri-
cal order No. 11 and 17 shown second steps.
 There are three types of mounting bolts. Refer to the following for locating bolts.
e. Tighten transmission joint bolts. Refer to AT-243, "
Removal and Installation (AWD Models)".
f. Install rear plate cover.
4. Install oil pan drain plug with new drain plug washer.
PBIC2336E
PBIC0195E
M6 × 30 mm (1.18 in) : 18, 19
M8 × 100 mm (3.94 in) : 5, 9
M8 × 45 mm (1.77 in) : Except the above
PBIC0194E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-186
< SERVICE INFORMATION >[VK45DE]
OIL PAN AND OIL STRAINER
 Refer to the figure of components of former page for
installation direction of drain plug washer. Refer to
"Removal and Installation".
5. Install in the reverse order of removal after this step. NOTE:
At least 30 minutes after oil pan is installed, pour engine oil.
INSPECTION AFTER INSTALLATION
1. Check engine oil level and add engine oil. Refer to LU-23, "Inspection".
2. Start engine, and check there is no leak of engine oil.
3. Stop engine and wait for 15 minutes.
4. Check engine oil level again. Refer to LU-23, "
Inspection".
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C