engine NISSAN TEANA 2014 Service Manual

EM-134
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DRIVE BELTS
DRIVE BELTS
Exploded ViewINFOID:0000000009460528
Checking Drive BeltsINFOID:0000000009460529
WARNING:
Inspect and check the drive belts with the engine off.
1. Inspect belt for cracks, fraying, wear or o il adhesion. If necessary, replace with a new one.
2. Rotate the crankshaft pulley two times then ensure t he drive belt auto-tensioner is within the possible use
range.
NOTE:
Inspect drive belt tension when engine is cold.
Tension AdjustmentINFOID:0000000009460530
Belt tension is not manually adjustable, it is aut omatically adjusted by the drive belt auto-tensioner.
Removal and InstallationINFOID:0000000009460531
REMOVAL
1. Remove the front RH wheel and tire. Refer to WT-55, "Adjustment".
2. Remove the fender protector side cover RH. Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
1. Drive belt auto-tensioner 2. Generator 3. A/C compressor
4. Drive belt 5. Crankshaft pulley A. Indicator
B. Range when new drive belt is installed C. Possible use range D. View D Engine front
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EM-138
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CAMSHAFT VALVE CLEARANCE
CAMSHAFT VALVE CLEARANCE
Valve ClearanceINFOID:0000000009460535
CHECKING
• Perform inspection as follows after removal, installation or replace-
ment of camshaft or valve related parts, or if there is unusual
engine conditions regarding valve clearance.
Check valve clearance while engine is cold and not running.
1. Remove the intake manifold collector. Refer to EM-146,
"Removal and Installation".
2. Remove the ignition coils and spark plugs. Refer to EM-132,
"Removal and Installation".
3. Remove the rocker covers. Refer to EM-168, "Removal and
Installation LH" (LH), EM-169, "Removal and Installation RH"
(RH).
4. Set No.1 cylinder at TDC on its compression stroke. • Align pointer with TDC mark on crankshaft pulley.
• Check that the valve lifters on No.1 cylinder are loose and valve lifters on No.4 are tight. If not, turn the crankshaft one full
revolution (360 °) and align as shown.SEM713A
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CAMSHAFT VALVE CLEARANCEEM-141
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VALVE ADJUSTING
CAUTION:
Adjust valve clearance while engine is cold.
NOTE:
• Perform adjustment by selecting the correct head thicknes s of the valve lifter (adjusting shims are not used).
• The specified valve lifter thickness is the dimension at normal temperatures. Ignore dimensional differences
caused by temperature. Use spec ifications for hot engine condition to confirm valve clearances.
1. Remove the camshaft. Refer to EM-194, "Removal and Installation"
.
2. Remove the valve lifter that was measur ed as being outside the standard specifications.
3. Measure the center thickness of the removed lifter with a micrometer, as shown.
4. Use the equation below to calculate the replacement valve lifter thickness.
Valve lifter thickness calculation equation: t = t1 + (C1 - C2)
t = thickness of the replacement lifter
t1 = thickness of the removed lifter
C1 = measured valve clearance
C2 = standard valve clearance
• The thickness of the new valve lifter can be identified by the
stamp mark on the reverse side (inside the lifter).
• Available thickness of the valve lifter (factory setting):
7.88 - 8.40 mm (0.3102 - 0.3307 in), in 0.02 mm (0.0008 in)
increments, in 27 sizes (intake / exhaust). Refer to EM-249,
"Cylinder Head".
5. Install the selected replacement valve lifter.
6. Install the camshaft. Refer to EM-194, "Removal and Installation"
.
7. Rotate the crankshaft a few turns by hand.
8. Confirm that the valve clear ances are within specification.
9. After the engine has been run to full operating temperat ure, confirm that the valve clearances are within
specification.
* Approximately 80 °C (176 °F)
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Standard Valve Clearance Cold Hot* (reference data)
Intake 0.26 - 0.34 mm (0.010 - 0.013 in) 0.304 - 0.416 mm (0.012 - 0.016 in)
Exhaust 0.29 - 0.37 mm (0.011 - 0.015 in) 0.308 - 0.432 mm (0.012 - 0.017 in)
Revision: November 20132014 Altima NAM

EM-142
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COMPRESSION PRESSURE
COMPRESSION PRESSURE
On-Vehicle ServiceINFOID:0000000009460536
CHECKING COMPRESSION PRESSURE
1. Run the engine until it reaches normal operating temperature.
2. Turn the ignition switch to OFF.
3. Release fuel pressure and leave t he fuel pump electrically disconnected.
Refer to EC-687, "Work Procedure"
.
4. Remove all six spark plugs. Refer to EM-132, "Removal and Installation"
.
5. Install the compression tester with the adapter into the spark plug hole. • Use compression tester whose end (a) (rubber portion) is
smaller than 20 mm (0.79 in) in diameter. Otherwise, it may be
caught by cylinder head during removal.
6. Depress accelerator pedal fully to keep the electric throttle control actuator butterfly-valve wide open to
maximize air intake flow.
7. Crank the engine and record the highest gauge indication.
8. Repeat the measurement on each cylinder (steps 5 - 7). NOTE:
Always use a fully charged battery to obtain specified engine speed.
Unit: kPa (kg/cm2, psi)/rpm
9. If compression in one or more cylinders is low:
a. Pour a small amount of engine oil into cylinders through the spark plug holes.
b. Retest compression (steps 5 - 8).
• If adding oil helps raise compression pressure, then the piston rings may be worn or damaged. If so, replace piston rings after checking piston.
• If the pressure stays low, a valve may be sticking or is seating improperly. Inspect and repair the valve and/
or valve seat. Refer to EM-212, "Inspection After Disassembly"
. If the valve and/or valve seat is damaged
replace as necessary.
• If compression stays low in two or more cylinders that are next to each other:
- The cylinder head gasket may be leaking.
- Both cylinders may have valve component damage. Inspect and repair as necessary.
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Standard Minimum Difference limit between cylinders
1,275 (13.0, 185)/300 981 (10.0, 142)/300 98 (1.0, 14)/300
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ENGINE ROOM COVEREM-143
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REMOVAL AND INSTALLATION
ENGINE ROOM COVER
Exploded ViewINFOID:0000000009460537
Removal and InstallationINFOID:0000000009460538
CAUTION:
Do not damage or scratch engine room cover when installing or removing.
REMOVAL
1. Remove front air duct. Refer to EM-144, "Removal and Installation".
2. Remove engine room cover bolts.
3. Remove engine room cover by lifting straight up releasing engine room cover locking tabs.
INSTALLATION
Installation is in the reverse order of removal.
1. Engine room cover A. Engine room cover locking tabs
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EM-144
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AIR CLEANER AND AIR DUCT
AIR CLEANER AND AIR DUCT
Exploded ViewINFOID:0000000009460539
Removal and InstallationINFOID:0000000009460540
REMOVAL
1. Remove engine room cover. Refer to
EM-143, "Removal and Installation".
2. Remove duct sub-cover and front air duct.
3. Disconnect the blow-by hose.
4. Disconnect the tube clamp at the electric throttle control actuator and at the air duct hose and resonator
assembly.
5. Remove air duct hose and resonator assembly.
6. Disconnect mass air flow sensor.
7. Remove mass air flow sensor from air cleaner assembly, as necessary. CAUTION:
Handle mass air flow sensor with care.
• Do not shock it.
• Do not disassemble it.
• Do not touch its sensor.
8. Disconnect transaxle breather hose.
9. Remove air cleaner assembly.
INSPECTION AFTER REMOVAL
Inspect air cleaner case assembly, front air duct, air duct hose and resonator assembly for cracks or tears.
Replace as necessary.
1. Air duct hose and resonator assembly 2. Duct sub-cover 3. Front air duct
4. Air cleaner assembly 5. Grommets 6. Air cleaner mounting bracket
7. Bracket 8. Mass air flow sensor A. To electric throttle control actuator
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EM-146
< REMOVAL AND INSTALLATION >[VQ35DE]
INTAKE MANIFOLD COLLECTOR
INTAKE MANIFOLD COLLECTOR
Exploded ViewINFOID:0000000009460541
CAUTION:
Do not remove power valves.
Removal and InstallationINFOID:0000000009460542
REMOVAL
WARNING:
To avoid the danger of being scalded, do no t drain the coolant when the engine is hot.
1. Remove the cowl top. Refer to EXT-24, "Removal and Installation"
.
2. Remove the strut tower bar. Refer to FSU-19, "Exploded View"
.
3. Remove the engine room cover. Refer to EM-143, "Removal and Installation"
.
4. Remove front air duct and air duct hose and resonator assembly. Refer to EM-144, "Removal and Installa-
tion".
5. Partially drain the engine coolant. Refer to CO-36, "Changing Engine Coolant"
.
NOTE:
1. Intake manifold collector 2. Intake manifold collector gasket 3. Electric throttle control actuator gasket
4. Electric throttle control actuator A. Refer to INSTALLATION B. Refer to INSTALLATION
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INTAKE MANIFOLD COLLECTOREM-147
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This step is only required when removing electric
throttle control actuator from the vehicle.
6. Remove the electric throttle control actuator bolts in the reverse order as shown and remove the electric throttle control actuator
and position aside.
CAUTION:
• Handle carefully to avoid any shock to the electric throttle
control actuator.
• Do not disassemble.
7. Disconnect the following: • Power brake booster vacuum hose
• Fuel injector harness connectors
• PCV hose
• Electric throttle control actuator harness connector
• EVAP canister purge hose
CAUTION:
Cover any engine openings to avoid the entry of any foreign material.
8. Remove the EVAP canister purge volume solenoi d valve bracket bolt. Position the valve aside.
9. Loosen the intake manifold collector nuts and bolts in the reverse order as shown using power tool, and remove the intake
manifold collector and gasket.
10. If necessary remove the following components: • VIAS control solenoid valve
• EVAP canister purge volume control solenoid valve
INSTALLATION
CAUTION:
Do not reuse intake manifold collector gasket or electric throttle control actuator gasket.
Installation is in the reverse order of removal.
• Tighten intake manifold collector nuts and bolts in the order as shown.
SEM711G
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Nuts and bolts :11.0 N·m (1.1 kg-m, 8 ft-lb)
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INTAKE MANIFOLDEM-149
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INTAKE MANIFOLD
Exploded ViewINFOID:0000000009460543
Removal and InstallationINFOID:0000000009460544
REMOVAL
WARNING:
To avoid the danger of being scalded, do no t drain the coolant when the engine is hot.
1. Release the fuel pressure. Refer to EC-687, "Work Procedure"
.
2. Disconnect the battery negative terminal. Refer to PG-73, "Removal and Installation (Battery)"
.
3. Remove intake manifold collector. Refer to EM-146, "Removal and Installation"
.
4. Disconnect fuel tube quick connector (1) at fuel tube (3) side. Refer to EM-163, "Removal and Installation"
.
5. Remove fuel injector and fuel tube. Refer to EM-163, "Removal and Installation"
.
1. Intake manifold 2. Intake manifold gaskets A. Refer to INSTALLATION
Engine front
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(2) : Quick connector release
(A) : Holding position
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EM-150
< REMOVAL AND INSTALLATION >[VQ35DE]
INTAKE MANIFOLD
6. Loosen the bolts in the order as shown, and remove the intake
manifold.
INSPECTION AFTER REMOVAL
Surface Distortion
• Using straightedge and feeler gauge, inspect the surface distortion of the intake manifold. Refer to EM-146, "Removal and Installa-
tion".
INSTALLATION
Installation is in the reverse order of removal. Fo llow the procedure below for specific tightening sequences
and procedures.
CAUTION:
Do not reuse intake manifold gaskets.
• Install intake manifold nuts and bolts in two steps in the numerical order as shown.
NOTE:
After installation, it is necessary to re-calibrate the electric throttle control actuator as follows:
1. Perform the "Throttle Valve Closed Position Learning" when harness connector of the electric throttle con-
trol actuator is disconnected. Refer to EC-682, "Work Procedure"
.
2. Perform the "Idle Air Volume Learning" when the electric throttle control actuator is replaced. Refer to EC-
683, "Work Procedure".
3. Install the quick connector. Refer to EM-163, "Removal and Installation"
.
INSPECTION AFTER INSTALLATION
Make sure there are no fuel leaks at the connections as follows:
1. Apply fuel pressure to fuel lines by turning ignition switch ON (with engine stopped). Then check for fuel leaks at connections.
2. Start the engine and rev it up and check for fuel leaks at connections. WARNING:
Do not touch engine immediately after stopping as engine is extremely hot.
NOTE:
Use mirrors for checking on connections out of the direct line of sight.
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Standard : 0.1 mm (0.004 in)
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Step 1 : 7.3 N·m (0.74 kg-m, 65 in-lb)
Step 2 : 25.5 N·m (2.6 kg-m, 19 ft-lb)
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Revision: November 20132014 Altima NAM