engine INFINITI FX35 2008 Service Manual

INTAKE MANIFOLD COLLECTOREM-21
< SERVICE INFORMATION > [VQ35DE]
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8. Loosen mounting bolts in reverse order of illustration to remove
intake manifold collector (upper) with power tool.
9. Remove PCV hose [between intake manifold co llector (lower) and rocker cover (right bank)].
10. Loosen mounting bolts in reverse order as shown in the figure, and remove intake manifold collector cover, gasket, intake man-
ifold collector (lower) and gasket with power tool.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
 Check the surface distortion of both the intake manifold collector
(upper and lower) mating surfaces with a straightedge and a feeler
gauge.
 If it exceeds the limit, replace intake manifold collector (upper and/ or lower).
INSTALLATION
Note the following, and install in the reverse order of removal.
Part Installation Direction
PBIC0773E
PBIC0774E
Limit : 0.1 mm (0.004 in)
PBIC0775E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-24
< SERVICE INFORMATION >[VQ35DE]
INTAKE MANIFOLD
INTAKE MANIFOLD
ComponentINFOID:0000000001325712
Removal and InstallationINFOID:0000000001325713
REMOVAL
1. Release fuel pressure. Refer to
EC-87, "Fuel Pressure Check".
2. Remove intake manifold colle ctors (upper and lower). Refer to EM-19, "
Component".
3. Remove fuel tube and fuel injector assembly. Refer to EM-45, "
Component".
4. Loosen mounting bolts and nuts in reverse order as shown in the figure to remove intake manifold with power tool.
5. Remove gaskets. CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
1. Harness bracket 2. Intake manifold 3. Gasket
SBIA0487E
PBIC0778E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-26
< SERVICE INFORMATION >[VQ35DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
EXHAUST MANIFOLD AND THREE WAY CATALYST
ComponentINFOID:0000000001325714
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325715
REMOVAL
WARNING:
Perform the work when the exhaust and co oling system have completely cooled down.
1. Remove engine cover with power tool. Refer to EM-19, "
Component".
2. Drain engine coolant. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
3. Remove air cleaner case and air duct. Refer to EM-17, "
Component".
4. Remove front and rear engine undercover and front cross bar with power tool.
5. Disconnect heated oxygen sensors 2 ( bank 1 and bank 2) harness connectors.
1. Heated oxygen sensor 2 (bank 1) 2. Three way catalyst (right bank) 3. Gasket
4. Air fuel ratio sensor 1 (bank 1) 5. Exhaust manifold cover (right bank) 6. Exhaust manifold (right bank)
7. Exhaust manifold (left bank) 8. Exhaust manifold cover (left bank) 9. Three way catalyst (left bank)
10. Air fuel ratio sensor 1 (bank 2) 11. Heated oxygen sensor 2 (bank 2)
JPBIA0829GB
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-27
< SERVICE INFORMATION > [VQ35DE]
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6. Using the heated oxygen sensor wrench (SST), remove heated
oxygen sensors 2 (bank 1 and bank 2).
CAUTION:
 Be careful not to damage heated oxygen sensor.
 Discard any heated oxyg en sensor which has been
dropped onto a hard surface such as a concrete floor,
replace with a new sensor.
7. Remove exhaust mounting bracket between three way catalysts (right and left bank) and transmission. Refer to EX-3
.
8. Remove three way catalysts (right and left bank).
9. Disconnect air fuel ratio sensor 1 (bank 1 and bank 2) harness connectors and remove harness clip.
10. Using the heated oxygen sensor wrench (SST), remove air fuel ratio sensor 1 (bank 1 and bank 2).
CAUTION:
 Be careful not to damage air fuel ratio sensor.
 Discard any air fuel ratio sen sor which has been dropped
onto a hard surface such as a concrete floor, replace with
a new sensor.
11. Remove water pipe and heater pipe on both right and left side. Refer to CO-29, "
Component".
12. Remove exhaust manifold cover (right and left bank).
13. Loosen mounting nuts in the reverse order as shown in the fig- ure to remove exhaust manifold with power tool.
NOTE:
Disregard the numerical order No. 7 and 8 in removal.
14. Remove gaskets. CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
KBIA1740E
SBIA0575E
PBIC2042E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-28
< SERVICE INFORMATION >[VQ35DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Surface Distortion
 Check the surface distortion of the exhaust manifold mating sur-
face with a straightedge and a 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 in direction shown in the figure. (Follow same procedure for both banks.)
Exhaust Manifold
 If stud bolts were removed, install them and tighten to the specifiedtorque below.
 Install exhaust manifold and tighten mounting bolts in numerical
order as shown in the figure.
NOTE:
Tighten nuts No. 1 and 2 in two steps. The numerical order No. 7
and 8 shows second step.
Air Fuel Ratio Sensor 1 and Heated Oxygen Sensor 2
CAUTION: Limit : 0.3 mm (0.012 in)
PBIC1096E
A : Right bank
B : Triangle press
C : Left bank
: Engine front
PBIC4954E
: 14.7 N·m (1.5 kg-m, 11 ft-lb)
PBIC2042E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-30
< SERVICE INFORMATION >[VQ35DE]
OIL PAN AND OIL STRAINER
OIL PAN AND OIL STRAINER
Component (2WD Models)INFOID:0000000001325716
Removal and Installation (2WD Models)INFOID:0000000001325717
REMOVAL
CAUTION:
To avoid the danger of being scalded, never
drain engine oil when the engine is hot.
NOTE:
To remove oil pan (lower) only, take step 5, then st ep 20. Removal of step 1, hood assembly (step 2) and step
4 are unnecessary.
1. Remove front tire.
2. Remove hood assembly. Refer to BL-13, "
Fitting Adjustment".
3. Remove front and rear engine undercover with power tool.
4. Remove front cross bar with power tool. FSU-5, "
On-Vehicle Inspection and Service".
5. Drain engine oil. Refer to LU-7, "
Changing Engine Oil".
CAUTION:
 Perform this step when the engine is cold.
1. Oil pan gasket (rear) 2. Oil pan (upper) 3. O-ring
4. Oil pan gasket (front) 5. Oil filter 6. Connector bolt
7. Oil cooler 8. O-ring 9. Relief valve
10. Oil pressure switch 11. Bracket 12. Oil strainer
13. Drain plug 14. Drain plug washer 15. Oil pan (lower)
16. Rear plate cover 17. Crankshaft position sensor (POS) 18. Seal rubber
19. Rear cover plate
SBIA0587E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

OIL PAN AND OIL STRAINEREM-31
< SERVICE INFORMATION > [VQ35DE]
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 Do not spill engine oil on drive belts.
6. Drain engine coolant. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
7. Remove engine cover with power tool. Refer to EM-19, "
Component".
8. Remove air hose from air duct to mass air flow sens or side and electric throttle control actuator side.
Refer to EM-17, "
Component".
9. Removal engine rear lower slinger, and install engine rear slinger [SST: 10006 31U00 ( — )] to sling engine assembly for positioning. Refer to EM-7, "
Special Service Tool".
10. Remove front suspension member. Refer to FSU-16, "
Removal and Installation".
11. Remove drive belts. Refer to EM-15, "
Removal and Installation".
12. Remove alternator stay. Refer to SC-19, "
System Description".
13. Remove starter motor. Refer to SC-8, "
System Description".
14. Remove idler pulley and bracket assembly. Refer to EM-64, "
Component".
15. Disconnect oil cooler water hoses, and remove oil cooler water pipe mounting bolt. Refer to LU-12, "
Com-
ponent".
16. Disconnect A/T fluid cooler hoses, and remove A/T fluid cooler tube. Refer to AT-241, "
Removal and
Installation (2WD Models)".
17. Remove crankshaft position sensor (POS). CAUTION:
 Handle carefully to avoid dropping and shocks.
 Do not disassemble.
 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.
18. Remove oil filter, as necessary. Refer to LU-8, "
Removal and Installation".
19. Remove oil cooler, as necessary. Refer to LU-12, "
Component".
20. Remove oil pan (lower) as follows:
a. Loosen mounting bolts in reverse order as shown in the figure to remove.
b. Insert the seal cutter (SST) between oil pan (upper) and oil pan (lower).
CAUTION:
 Be careful not to damage the mating surfaces.
 Do not insert a screwdriver, this will damage the mating
surfaces.
c. Slide the seal cutter by tapping on the side of tool with a ham- mer. Remove oil pan (lower).Slinger bolts:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
PBIC0782E
SEM960F
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

OIL PAN AND OIL STRAINEREM-35
< SERVICE INFORMATION > [VQ35DE]
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 Tighten mounting bolts in numerical order as shown in the fig-
ure.
4. Install oil pan drain plug.  Refer to the figure of components of former page for installation direction of drain plug washer. Refer to
EM-30, "
Component (2WD Models)".
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 the engine oil level and adjust engine oil. Refer to LU-5, "Inspection".
2. Start engine, and check there is no leak of engine oil.
3. Stop engine and wait for 10 minutes.
4. Check the engine oil level again. Refer to LU-5, "
Inspection".
Component (AWD Models)INFOID:0000000001325718
PBIC0782E
SBIA0567E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-36
< SERVICE INFORMATION >[VQ35DE]
OIL PAN AND OIL STRAINER
Removal and Installation (AWD Models)
INFOID:0000000001325719
REMOVAL
CAUTION:
To avoid the danger of being scalded, never drain engine oil when the engine is hot.
NOTE:
To remove oil pan (lower) only, take step 5, then st ep 24. Removal of step 1, hood assembly (step 2) and step
4 are unnecessary.
1. Remove front tire.
2. Remove hood assembly. Refer to BL-13, "
Fitting Adjustment".
3. Remove front and rear engine undercover with power tool.
4. Remove front cross bar with power tool. Refer to FSU-5, "
On-Vehicle Inspection and Service".
5. Drain engine oil. Refer to LU-7, "
Changing Engine Oil".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine oil on drive belts.
6. Drain engine coolant. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
7. Remove engine cover with power tool. Refer to EM-19, "
Component".
8. Remove air hose from air duct to mass air flow s ensor side and electric throttle control actuator side.
Refer to EM-17, "
Component".
9. Remove drive belts. Refer to EM-15, "
Removal and Installation".
10. Remove front drive shaft (LH and RH) and side shaft. Refer to FAX-13, "
On-Vehicle Inspection".
11. Remove side shaft. Refer to FFD-14, "
Removal and Installation (VQ35DE Models)".
12. Removal engine rear lower slinger, and install engine rear slinger [SST: 10006 31U00 ( — )] to sling engine assembly for positioning. Refer to EM-7, "
Special Service Tool".
13. Remove front suspension member. Refer to FSU-16, "
Removal and Installation".
14. Remove engine mounting bracket, engine mounting bracket (lower) and insulator. Refer to EM-112,
"Component (2WD Models)".
15. Remove front propeller shaft. Refer to PR-4, "
On-Vehicle Inspection".
16. Remove oil filter and oil filter bracket. Refer to LU-10, "
Component".
17. Remove alternator stay. Refer to SC-19, "
System Description".
18. Remove idler pulley and bracket. Refer to EM-15, "
Removal and Installation".
19. Disconnect oil cooler water hoses, and remove oil cooler water pipe mounting bolt. Refer to LU-12, "
Com-
ponent".
20. Disconnect A/T fluid cooler hoses, and remove A/T fluid cooler tube. Refer to AT-241, "
Removal and
Installation (2WD Models)".
21. Remove front final drive assembly. Refer to FFD-14, "
Removal and Installation (VQ35DE Models)".
22. Remove starter motor. Refer to SC-8, "
System Description".
1. Oil pan gasket (rear) 2. Oil pan (upper) 3. O-ring
4. Oil pan gasket (front) 5. Oil filter 6. Connector bolt
7. Oil cooler 8. O-ring 9. Relief valve
10. Oil filter bracket 11. Oil filter bracket gasket 12. Oil strainer
13. Drain plug 14. Drain plug washer 15. Oil pan (lower)
16. Rear plate cover 17. Crankshaft position sensor (POS) 18 O-ring (small)
19. O-ring (large) 20. Axle pipe
Slinger bolts:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-38
< SERVICE INFORMATION >[VQ35DE]
OIL PAN AND OIL STRAINER
29. Remove oil pan gaskets.
30. Remove axle pipe, as necessary.
 Remove axle pipe from oil pan (upper) using a suitable drift
[outer diameter: 37 mm (1.46 in)].
INSPECTION AFTER REMOVAL
Clean oil strainer if any object attached.
INSTALLATION
1. 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.
Unit: mm (in)
 Install axle pipe to oil pan (upper) from axle pipe flange side
(left side) using a suitable drift [outer diameter: 43 to 57 mm
(1.69 to 2.24 in)].
CAUTION:
Insert it with care to prevent O-ring from sliding.
2. Install oil pan (upper) as follows:
PBIC1145E
SBIA0469E
Items O-ring inner diameter
Final drive side (right side) 32 (1.26)
Axle pipe flange side (left side) 34 (1.34)
SBIA0470E
SBIA0471E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C