2014 NISSAN TEANA checking oil

EM-26
< PERIODIC MAINTENANCE >[QR25DE]
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.
ALBIA0917GB
JPBIA0171ZZ
Standard Minimum Difference limit between cylinders
1410 (14.4, 204.5) / 250 1220 (12.4, 176.9) / 250 100 (1.0, 14) / 250
Revision: November 20132014 Altima NAM

FUEL INJECTOR AND FUEL TUBEEM-43
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O• Handle O-rings with bare hands only. Do not wear gloves.
• Do not clean O-rings with solvent.
• Make sure that O-ring and its mating part are free of foreign material.
• Be careful not to scratch O- rings during installation.
• Do not twist or stretch the O-ring. If the O-ring was stretched while it is attached, do not insert it
into the fuel tube immediately.
2. Install the fuel injector (5) into the fuel tube (1) with the following procedure:
(2): O-ring (black)
(4): O-ring (green)
a. Insert the new clip (3) into the clip mounting groove (F) on fuel injector (5).
• Insert the clip (3) so that prot rusion (E) of fuel injector (5)
matches cutout (C) of the clip (3).
CAUTION:
• Do not reuse clip (3), replace it with a new one.
• Be careful to keep clip from interfering with O-ring. If
interference occurs, replace O-ring.
b. Insert fuel injector (5) into fuel tube (1) with clip (3) attached. • Insert fuel injector (5) so that protrusion (A) of fuel tube (1)
matches cut-out (B) of the clip (3).
• Check that fuel tube flange (G) is securely fixed in flange
groove (D) on the clip (3).
c. Check that installation is comple te by checking that fuel injector
(5) does not rotate or come off.
3. Install fuel tube and fuel injector assembly with the following procedure.
a. Insert the tip of each fuel injector into intake manifold.
b. Tighten the bolts to specification in the numerical order as shown.
CAUTION:
After properly connecting fu el tube assembly to injector
and fuel hose, check co nnection for fuel leaks.
4. Connect the fuel hose quick connector.
a. Make sure no foreign substances are deposited in and around the fuel tube and quick connector, and there is no damage to them.
b. Thinly apply new engine oil around the fuel tube tip end. Fuel tube side : Black
Nozzle side : Green
AWBIA1262GB
AWBIA1261GB
Revision: November 20132014 Altima NAM

CAMSHAFTEM-57
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WARNING:
Check when engine is cold so as to preven t burns from any splashing engine oil.
CAUTION:
Perform this inspection only when DTC P0011, P0014, P052A, P052B is detected in self-diagnostic
results of CONSULT and it is directed according to inspection procedure of EC section. Refer to EC-
210, "Diagnosis Procedure".
1. Check engine oil level and adjust oil level as necessary. Refer to LU-9, "Inspection"
.
2. Remove the intake valve timing intermediate lock control solenoid valve, intake valve timing control sole- noid valve, and exhaust valve timing control solenoid valve. Refer to EM-58, "Intake Valve Timing Interme-
diate Lock Control Solenoid Valve, Intake Valve Timing Control Solenoid Valve, and Exhaust Valve Timing
Control Solenoid Valve".
3. Perform the following procedure to prevent the engi ne from being unintentionally started while checking.
a. Release fuel pressure. Refer to EC-182, "Work Procedure"
.
b. Disconnect injector harness connectors.
4. Crank engine, and then make sure that engine oil comes out of the valve timing control cover oil holes (A). End cranking after
checking.
WARNING:
Be careful not to touch rotating parts (drive belt, crankshaft
pulley, etc.).
CAUTION:
• Engine oil may squirt from intake valve timing intermedi-
ate lock control solenoid valve, intake valve timing control
solenoid valve, exhaust valve timing control solenoid
valve installation holes during cranking. Use a shop cloth
to prevent engine oil from splashing on worker, engine
components and vehicle.
• Do not allow engine oil to get on rubber componen ts such as drive belts or engine mount insula-
tors. Immediately wipe off any splashed engine oil.
5. If engine oil does not come out from valve timing cont rol cover oil holes (A), diagnose problem in lubrica-
tion circuit such as dirty oil groove between oil strainer and intake valve timing intermediate lock control
solenoid valve, intake valve timing control solenoid valve, or exhaust valve timing control solenoid valve.
Refer to LU-7, "Lubrication Circuit"
.
a. Remove components between intake valve timing intermediate lock control solenoid valve, intake valve timing control solenoid valve, exhaust valve timing c ontrol solenoid valve and camshaft sprocket (INT) or
camshaft sprocket (EXH), (if necessary) and then check each oil groove for clogging.
b. Clean oil groove if necessary. Refer to LU-7, "Lubrication Circuit"
.
6. After inspection, install the remaining components in the reverse order of removal.
ALBIA0909GB
Revision: November 20132014 Altima NAM

EM-138
< PERIODIC MAINTENANCE >[VQ35DE]
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
JMBIA1135GB
SEM418G
Revision: November 20132014 Altima NAM

EM-142
< PERIODIC MAINTENANCE >[VQ35DE]
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.
JPBIA0171ZZ
Standard Minimum Difference limit between cylinders
1,275 (13.0, 185)/300 981 (10.0, 142)/300 98 (1.0, 14)/300
Revision: November 20132014 Altima NAM

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10. Loosen bolts in reverse order as shown, and remove fuel tube
and fuel injector assembly.
CAUTION:
Do not tilt fuel tube, or remain ing fuel in pipes may flow out
from pipes.
11. Remove fuel injector from fuel tube as follows:
a. Open and remove clip (1).
b. Remove fuel injector (2) from fuel tube (5) by pulling straight. CAUTION:
• Do not reuse O-rings.
• Be careful with remaining fuel that may go out from fuel
tube.
• Be careful not to damage in jector nozzle during removal.
• Do not bump or drop fuel injector.
• Do not disassemble fuel injector.
12. Remove fuel damper from fuel tube, (if necessary).
INSTALLATION
1. Install fuel damper as follows:
a. Install new O-ring (2) to fuel tube (1) as shown. When handling new O-ring, be careful of the following:
CAUTION:
• Do not reuse O-ring.
• Handle O-ring with bare hands. Do not wear gloves.
• Lubricate O-ring with new engine oil.
• Do not clean O-ring with solvent.
• Check that O-ring and its mating part are free of foreign material.
• When installing O-ring, be car eful not to scratch it with
tool or fingernails. Also be careful not to twist or stretch
O-ring. If O-ring was stretched while it was being
attached, do not insert it quickly into fuel tube.
• Insert new O-ring straight into fuel tube. Do not twist it.
b. Install spacer (3) to fuel damper (4).
c. Insert fuel damper straight into fuel tube. CAUTION:
• Insert straight, checking that the axis is lined up.
• Do not pressure-fit with excessive force.
• Insert fuel damper until (B) is touching (A) of fuel tube.
d. Tighten bolts evenly in turn. • After tightening bolts, check that there is no gap between fuel damper cap (5) and fuel tube.
2. Install new O-rings to fuel injector paying attention to the following. CAUTION:
: Engine front
JPBIA1715ZZ
(3) : O-ring (green)
(4) : O-ring (black)
(A) : Installed condition
(B) : Clip groove
JPBIA1958ZZ
Reference value : 130 N (13.3 kg, 29.2 lb)
JPBIA0316ZZ
Revision: November 20132014 Altima NAM

EM-166
< REMOVAL AND INSTALLATION >[VQ35DE]
FUEL INJECTOR AND FUEL TUBE
• Do not reuse O-rings.
• Upper and lower O-rings are different. Be careful not to confuse them.
• Handle O-ring with bare hands. Do not wear gloves.
• Lubricate O-ring with new engine oil.
• Do not clean O-ring with solvent.
• Check that O-ring and its mating pa rt are free of foreign material.
• When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to
twist or stretch O-ring. If O-ring was stretc hed while it was being attached, do not insert it
quickly into fuel tube.
• Insert O-ring straight into fu el injector. Do not twist it.
3. Install fuel injector to fuel tube as follows:
a. Insert clip (3) into clip groove (F) on fuel injector (5).
• Insert clip so that protrusion (E ) of fuel injector matches cutout
(C) of clip.
CAUTION:
• Do not reuse O-rings.
• Do not reuse clip. Replace it with new one.
• Be careful to keep clip from interfering with O-ring. If interference occurs, replace O-ring.
b. Insert fuel injector into fuel tube (1) with clip attached. • Insert it while matching it to the axial center.
• Insert fuel injector so that protrusion (A) of fuel tube matches
cutout (B) of clip.
• Check that fuel tube flange (G) is securely fixed in flange fixing
groove (D) on clip.
c. Check that installation is complete by checking that fuel injector does not rotate or come off.
• Check that protrusions of fuel injectors and fuel tubes are
aligned with cutouts of clips after installation.
4. Install fuel tube and fuel injector assembly to intake manifold. CAUTION:
Be careful not to let tip of injector nozzle come in contact with other parts.
• Tighten bolts in two steps in numerical order as shown.
5. Connect fuel injector harness.
6. Install intake manifold collector. Refer to EM-146, "Removal and Installation"
.
7. Connect quick connector between fuel feed hose and fuel tube connection with the following procedure:
a. Check no foreign substances are deposited in and around fuel tube and quick connector, and no damage on them.Fuel tube side : Black
Nozzle side : Green
(2) : O-ring (black)
(4) : O-ring (green)
JPBIA1959ZZ
: Engine front
1st step : 10.1 N·m (1.0 kg-m, 7 ft-lb)
2nd step : 22.0 N·m (2.2 kg-m, 16 ft-lb)
JPBIA1715ZZ
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b. Thinly apply new engine oil around fuel tube from tip end to spool end.
c. Align center to insert quick connector straightly into fuel tube. • Insert quick connector (1) to fuel tube until top spool (2) is
completely inside quick connector, and 2nd level spool (3)
exposes right below quick connector.
CAUTION:
• Do not reuse O-ring.
• Hold (A) position as shown when inserting fuel tube into quick connector.
• Carefully align center to avoid inclined insertion to pre-
vent damage to O-ring inside quick connector.
• Insert until you hear a “click” sound and actually feel the engagement.
• To avoid misidentification of enga gement with a similar sound, be sure to perform the next step.
d. Pull quick connector by hand holding position. Check it is completely engaged (connected) so that it does
not come out from fuel tube.
e. Install quick connector cap (3) to quick connector.
• Install quick connector cap with arrow (A) on surface facing indirection of quick connector (fuel feed hose side).
CAUTION:
If quick connector cap cannot be installed smoothly, quick
connector may have not been installed correctly. Check
connection again.
f. Secure fuel feed hose to clamp of quick connector cap.
8. Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
Make sure there is no fuel leakage at connections as follows:
1. Apply fuel pressure to fuel lines by turning i gnition 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.
• Perform procedures for “Throttle Valve Closed Position Learning” after finishing repairs. Refer to EC-
682, "Work Procedure".
• If electric throttle control actuator is replaced, perform procedures for “Idle Air Volume Learning” after
finishing repairs. Refer to EC-683, "Work Procedure"
.
(B) : Installed condition
: Upright insertion
(1) : Fuel feed hose
(2) : Fuel tube
(B) : Upper view
JPBIA0275ZZ
JPBIA0039ZZ
Revision: November 20132014 Altima NAM