NISSAN TEANA 2014 Service Manual

CAMSHAFT VALVE CLEARANCEEM-23
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CAMSHAFT VALVE CLEARANCE
Camshaft valve clearanceINFOID:0000000009460474
• Perform this inspection as follows after removal, inst
allation, or replacement of the camshaft or any valve-
related parts, or if there are any unusual engine conditions due to changes in valve clearance over time
(starting, idling, and/or noise).
1. Remove the fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
2. Remove the rocker cover using power tool. Refer to EM-45, "Removal and Installation"
.
3. Turn crankshaft pulley clockwise when viewed from front to align TDC identification mark (B) with timing indicator (A).
NOTE:
Do not confuse TDC mark (B) with paint marks (C).
4. At this time, check that the both intake and exhaust cam lobes of No. 1 cylinder face outside.
• If they do not face outside, turn crankshaft pulley once more.
5. Measure valve clearances with a feeler gauge at locations marked (X) in the table below.
• No.1 cylinder compression TDC.
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Cylinder No.1 (A) No.2 (B) No.3 (C) No.4 (D)
Va l v e I N T (E)EXH
(F) INT
(E) EXH
(F) INT
(E) EXH
(F) INT
(E) EXH
(F)
Measure x x x x
: Engine frontALBIA0886GB
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EM-24
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CAMSHAFT VALVE CLEARANCE
• Use a feeler gauge to measure the clearance between valve
lifter and camshaft.
6. Turn crankshaft one complete revolution (360 °) and align mark on crankshaft pulley with pointer.
7. Measure valve clearances with a feeler gauge at locations marked (X) in the table below.
• No.4 cylinder compression TDC.
If out of specifications, make necessary adjustment.
ADJUSTMENT
NOTE:
• Perform adjustment by selecting the valve lifter with the correct head thickness.
1. Remove camshaft. Refer to EM-47, "Removal and Installation"
.
2. Remove the valve lifters at the locations that are outside the standard.
3. Measure the center thickness of the removed valve lifters with a micrometer (A).
4. Use the equation below to calculate valve lifter thickness for replacement. • Valve lifter thickness calculation.t = t1 + (C1 - C2)
t = Thickness of replacement valve lifter.
t1 = Thickness of removed valve lifter.
C1 = Measured valve clearance.
C2 = Standard valve clearance. Valve clearance: Refer to
EM-111, "Standard and Lim-
it".
SEM139D
Cylinder No.1 (A) No.2 (B) No.3 (C) No.4 (D)
Va l v e I N T (E)EXH
(F) INT
(E) EXH
(F) INT
(E) EXH
(F) INT
(E) EXH
(F)
Measure x x x x
: Engine frontALBIA0884GB
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CAMSHAFT VALVE CLEARANCEEM-25
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• Thickness of a new valve lifter (B) can be identified by stamp
marks (A) on the reverse side (inside the cylinder).
Stamp mark 300 indicates a thickness of 3.00 mm (0.1181 in)
Available thickness of valve lifter: 26 sizes with a range of
3.00 to 3.50 mm (0.1181 to 0.1378 in), in steps of 0.02 mm
(0.0008 in), when assembled at the factory.
5. Install the selected valve lifter.
6. Install camshaft. Refer to EM-47, "Removal and Installation"
.
7. Install timing chain and related parts. Refer to EM-62, "Removal
and Installation".
8. Manually rotate crankshaft pulley a few rotations.
9. Check that valve clearances for cold engine are within specifications by referring to the specified values.
10. Install all removed parts in the reverse order of removal.
11. Warm up the engine, and check for unusual noise and vibration. Valve clearance Refer to
EM-111, "Standard and Limit"
.
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EM-26
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COMPRESSION PRESSURE
COMPRESSION PRESSURE
Compression pressureINFOID:0000000009460475
CHECKING COMPRESSION PRESSURE
1. Warm up the engine to full operating temperature.
2. Release the fuel pressure. Refer to EC-182, "Work Procedure"
.
3. Remove the ignition coil and spark plug from each cylinder. Refer to EM-40, "Removal and Installation"
.
4. Connect engine tachometer (not required in use of CONSULT).
5. Disconnect the fuel injector harness connector to avoid any residual fuel injection during the measure- ment.
6. 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.
7. With the accelerator pedal fully depressed, turn the ignition switch to the “START” position to crank over
the engine. When the gauge pointer stabilizes, read the compression pressure and engine rpm. Perform
these steps to check each cylinder.
Unit: kPa (kg/cm2, psi) / rpm
CAUTION:
Always use a fully charged battery to ob tain specified engine cranking speed.
• If the engine speed is out of specified rpm range, check the battery. Check engine speed again with a fully
charged battery.
• If compression pressure is below minimum value, check valve clearances and parts associated with com- bustion chamber (valve, valve seat, piston, piston ri ng, cylinder bore, cylinder head, cylinder head gasket).
After the checking, measure compression pressure again.
• If some cylinders have low compression pressure, pour small amount of engine oil into the spark plug hole of the cylinder to re-check it for compression.
• If the added engine oil improves the compression, the piston rings may be worn or damaged. Check the pis- ton rings and replace if necessary.
• If the compression pressure remains at low level des pite the addition of engine oil, the valves may be mal-
functioning. Check the valves for damage. Replace the valve or valve seat accordingly.
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Standard Minimum Difference limit between cylinders
1410 (14.4, 204.5) / 250 1220 (12.4, 176.9) / 250 100 (1.0, 14) / 250
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COMPRESSION PRESSUREEM-27
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• If two adjacent cylinders have respectively low compression pressure and their compression remains low
even after the addition of engine oil, the head gasket is leaking. In such a case, replace the cylinder head
gasket.
8. Install spark plug, ignition co il and harness connectors. Refer to EM-16, "Removal and Installation"
.
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EM-28
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ENGINE ROOM COVER
REMOVAL AND INSTALLATION
ENGINE ROOM COVER
Exploded ViewINFOID:0000000009460476
Removal and InstallationINFOID:0000000009460477
CAUTION:
Do not damage or scratch engine room cover.
REMOVAL
1. Remove the engine room cover bolts using power tool.
2. Lift up on engine room cover firmly to dislodge snap fit mounts.
3. Remove engine room cover.
INSTALLATION
Installation is in the reverse order of removal.
1. Engine room cover 2. RH engine mounting bracket 3. Cylinder head
4. Engine room cover bracket 5. Camshaft bracket 6. Engine room cover bracket
7. Bracket stopper A. View A Front
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AIR CLEANER AND AIR DUCTEM-29
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AIR CLEANER AND AIR DUCT
Exploded ViewINFOID:0000000009460478
Removal and InstallationINFOID:0000000009460479
REMOVAL
1. Remove the core support cover. Refer to
EXT-17, "Removal and Installation".
2. Remove front air duct.
3. Remove the engine room cover. Refer to EM-28, "Removal and Installation"
.
4. Disconnect the air duct hose clamps at the electric throttle control actuator and the air cleaner case
assembly.
5. Disconnect the blow-by hose.
6. Remove air duct hose and resonator.
7. Disconnect the mass air flow sensor and remove t he harness retainers from the air cleaner case assem-
bly.
8. Disconnect the transaxle breather hose from the air cleaner case assembly.
9. Remove mass air flow sensor from air cleaner case assembly, as necessary. CAUTION:
Handle the mass air flow sensor with care:
• Do not shock it.
• Do not disassemble it.
• Do not touch the internal sensor.
10. Remove the air cleaner case assembly.
INSTALLATION
Installation is in the reverse order of removal.
1. Air duct hose and resonator 2. Front air duct 3. Grommets
4. Air cleaner mounting bracket 5. Air cleaner mounting bracket 6. Air cleaner case assembly
7. Mass air flow sensor
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EM-30
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INTAKE MANIFOLD
INTAKE MANIFOLD
Exploded ViewINFOID:0000000009460480
Removal and InstallationINFOID:0000000009460481
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the coolant when the engine is hot.
NOTE:
When removing components such as hoses, tubes/lines, etc. , cap or plug openings to prevent fluid from spill-
ing.
1. Disconnect battery negative terminal. Refer to PG-73, "Removal and Installation (Battery)"
.
2. Release the fuel pressure. Refer to EC-182, "Work Procedure"
.
3. Partially drain engine coolant. Refer to CO-12, "Changing Engine Coolant"
.
4. Remove the air cleaner and air duct. Refer to EM-29, "Removal and Installation"
.
5. Remove cowl top finisher. Refer to EXT-24, "Removal and Installation"
.
6. Remove strut tower bar. Refer to FSU-19, "Exploded View"
.
7. Disconnect the PCV hose from the intake manifold.
8. Disconnect the EVAP hose and EVAP canister purge volume control solenoid.
1. Electric throttle control actuator 2. Map sensor (California only) 3. Map hose (California only)
4. Clamp 5. Cap (except California) 6. Intake manifold gasket
7. Intake manifold 8. Electric throttle control actuator O-ringA. Refer to INSTALLATION
B. Refer to INSTALLATION C. Refer to INSTALLATION
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INTAKE MANIFOLDEM-31
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9. Disconnect the brake booster vacuum
hose from the intake manifold.
10. Disconnect the fuel quick connector from the fuel tube assembly. Refer to EM-41, "Removal and Installa-
tion".
11. Disconnect the water hoses from the electric throttle control actuator.
NOTE:
When removing only intake manifold, position electric throttle control actuator aside without disconnecting
the water hose.
12. Loosen bolts in reverse order as shown, then remove electric throttle control actuator and electr ic throttle control actuator O-
ring.
CAUTION:
Handle carefully to avoid any damage.
13. Disconnect the radiator hose (upper) from the water outlet. Refer to CO-16, "Exploded View"
.
14. Disconnect electrical harness connectors from the tumble control valve, tumble control valve position sen-
sor, and power valve motor.
15. Remove the fuel tube assembly. Refer to EM-41, "Removal and Installation"
.
16. Remove the bolts and nuts in the reverse order shown using power tools and remove the intake manifold assembly with gas-
ket.
CAUTION:
Cover engine openings to pr event entry of foreign materi-
als.
NOTE:
Disregard No. 6 when loosening.
INSTALLATION
Installation is in the reverse order of removal. Fo llow the tightening sequences and specifications below and
perform the following:
• Perform the “Throttle Valve Closed Position Learning” when harness connector of electric throttle control
actuator is disconnected. Refer to EC-178, "Work Procedure"
.
• Perform the “Idle Air Volume Learning” and “Throttle Valve Closed Position Learning” when electric throttle
control actuator is replaced. Refer to EC-179, "Work Procedure"
or EC-178, "Work Procedure".
Intake Manifold
1. Securely install gasket to the mounting groove.
CAUTION:
Do not reuse gasket.
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INTAKE MANIFOLD
2. If studs were removed, install them and tighten to specification.
3. Tighten in numerical order as shown. CAUTION:
After tightening the five bolts in the order shown, the 1, 6
position designates that the fi rst bolt tightened is to be
retightened to specification.
Electric Throttle Control Actuator
1. Install a new O-ring on the electric throttle control actuator. CAUTION:
Do not reuse electric throttl e control actuator O-ring.
2. Tighten the bolts of electric th rottle control actuator equally and
diagonally in several steps in numerical order as shown.
INSPECTION AFTER INSTALLATION
Make sure there are no fuel leaks at 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.
NOTE:
Use mirrors for checking on connections out of the direct line of sight.
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.
Studs : 9.4 N·m (0.96 kg-m, 83 in-lb)
Bolts 1, 2, 3, 4, 5, 6 : 25.0 N·m (2.6 kg-m, 18 ft-lb)
Nuts 4, 5 : 25.0 N·m (2.6 kg-m, 18 ft-lb)
Bolt 7 : 45.0 N·m (4.6 kg-m, 33 ft-lb)
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