2003 NISSAN TEANA check engine

EM-2 CAMSHAFT ............................................................... 41
Removal and Installation ........................................ 41
REMOVAL ........................................................... 41
INSPECTION AFTER REMOVAL ........................ 44
INSTALLATION .................................................... 47
INSPECTION AFTER INSTALLATION ................ 49
Valve Clearance ...................................................... 50
INSPECTION ....................................................... 50
ADJUSTMENT .................................................... 51
TIMING CHAIN .......................................................... 53
Removal and Installation ........................................ 53
REMOVAL ........................................................... 54
INSPECTION AFTER REMOVAL ........................ 57
INSTALLATION .................................................... 58
OIL SEAL .................................................................. 62
Removal and Installation of Valve Oil Seal ............. 62
REMOVAL ........................................................... 62
INSTALLATION .................................................... 62
Removal and Installation of Front Oil Seal ............. 63
REMOVAL ........................................................... 63
INSTALLATION .................................................... 63
Removal and Installation of Rear Oil Seal .............. 64
REMOVAL ........................................................... 64
INSTALLATION .................................................... 64
CYLINDER HEAD ..................................................... 65
On-Vehicle Service ................................................. 65
CHECKING COMPRESSION PRESSURE ......... 65
Removal and Installation ........................................ 66
REMOVAL ........................................................... 66
INSPECTION AFTER REMOVAL ........................ 67
INSTALLATION .................................................... 68
INSPECTION AFTER INSTALLATION ................ 68
Disassembly and Assembly .................................... 70
DISASSEMBLY ................................................... 70
ASSEMBLY ......................................................... 71
Inspection After Disassembly ................................. 72
VALVE DIMENSIONS .......................................... 72
VALVE GUIDE CLEARANCE .............................. 73
VALVE GUIDE REPLACEMENT ......................... 73
VALVE SEAT CONTACT ..................................... 75
VALVE SEAT REPLACEMENT ........................... 75
VALVE SPRING SQUARENESS ......................... 76
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................... 76
ENGINE ASSEMBLY ................................................ 77
Removal and Installation ........................................ 77
REMOVAL ........................................................... 78
INSTALLATION .................................................... 79
INSPECTION AFTER INSTALLATION ................ 80
CYLINDER BLOCK ................................................... 81
Disassembly and Assembly .................................... 81
DISASSEMBLY ................................................... 82
ASSEMBLY ......................................................... 86
How to Select Piston and Bearing .......................... 91
DESCRIPTION .................................................... 91
HOW TO SELECT PISTON ................................. 92
HOW TO SELECT CONNECTING ROD BEAR-ING ....................................................................... 92
HOW TO SELECT MAIN BEARING .................... 95
Inspection After Disassembly .................................. 99
CRANKSHAFT END PLAY .................................. 99
CONNECTING ROD SIDE CLEARANCE ........... 99
PISTON TO PISTON PIN OIL CLEARANCE ....... 99
PISTON RING SIDE CLEARANCE ...................100
PISTON RING END GAP ..................................100
CONNECTING ROD BEND AND TORSION .....101
CONNECTING ROD BIG END DIAMETER ......101
CONNECTING ROD BUSHING OIL CLEAR-
ANCE .................................................................101
CYLINDER BLOCK DISTORTION ....................102
MAIN BEARING HOUSING INNER DIAMETER .103
PISTON TO CYLINDER BORE CLEARANCE ..103
CRANKSHAFT MAIN JOURNAL DIAMETER ...104
CRANKSHAFT PIN JOURNAL DIAMETER ......105
OUT-OF-ROUND AND TAPER OF CRANK-
SHAFT ...............................................................105
CRANKSHAFT RUNOUT ..................................105
CONNECTING ROD BEARING OIL CLEAR-
ANCE .................................................................105
MAIN BEARING OIL CLEARANCE ...................106
MAIN BEARING CRUSH HEIGHT ....................107
CONNECTING ROD BEARING CRUSH
HEIGHT .............................................................107
LOWER CYLINDER BLOCK MOUNTING BOLT
OUTER DIAMETER ...........................................107
CONNECTING ROD BOLT OUTER DIAMETER .107
SERVICE DATA AND SPECIFICATIONS (SDS) ....108
Standard and Limit ................................................108
GENERAL SPECIFICATIONS ...........................108
DRIVE BELT ......................................................108
EXHAUST MANIFOLD ......................................108
SPARK PLUG ....................................................108
CYLINDER HEAD ..............................................108
VALVE ................................................................109
CAMSHAFT AND CAMSHAFT BEARING .........113
CYLINDER BLOCK ............................................113
PISTON, PISTON RING AND PISTON PIN ......114
CONNECTING ROD ..........................................115
CRANKSHAFT ...................................................115
MAIN BEARING .................................................117
CONNECTING ROD BEARING .........................118
VQ
PRECAUTIONS .......................................................119
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................119
OPERATION PROCEDURE ..............................119
Precautions for Drain Engine Coolant ...................119
Precautions for Disconnecting Fuel Piping ...........119
Precautions for Removal and Disassembly ..........119
Precautions for Inspection, Repair and Replace-
ment ......................................................................119
Precautions for Assembly and Installation ............119

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Parts Requiring Angle Tightening ......................... 120
Precautions for Liquid Gasket .............................. 120
REMOVAL OF LIQUID GASKET SEALING ...... 120
LIQUID GASKET APPLICATION PROCEDURE . 120
PREPARATION ....................................................... 122
Special Service Tools ........................................... 122
Commercial Service Tools .................................... 124
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ............................................ 126
NVH Troubleshooting — Engine Noise ................ 126
Use the Chart Below to Help You Find the Cause
of the Symptom. ................................................... 127
DRIVE BELTS ......................................................... 128
Checking Drive Belts ............................................ 128
Tension Adjustment .............................................. 128
ALTERNATOR AND A/C COMPRESSOR BELT . 129
POWER STEERING OIL PUMP BELT ............. 129
Removal and Installation ...................................... 129
REMOVAL ......................................................... 129
INSTALLATION ................................................. 129
AIR CLEANER AND AIR DUCT ............................. 131
Removal and Installation ...................................... 131
REMOVAL ......................................................... 131
INSPECTION AFTER REMOVAL ..................... 132
INSTALLATION ................................................. 132
Changing Air Cleaner Filter .................................. 132
REMOVAL ......................................................... 132
INSTALLATION ................................................. 132
INTAKE MANIFOLD COLLECTOR ........................ 133
Removal and Installation ...................................... 133
REMOVAL ......................................................... 134
INSPECTION AFTER REMOVAL ..................... 136
INSTALLATION ................................................. 136
INTAKE MANIFOLD ............................................... 138
Removal and Installation ...................................... 138
REMOVAL ......................................................... 138
INSPECTION AFTER REMOVAL ..................... 139
INSTALLATION ................................................. 139
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST ....................................................................... 140
Removal and Installation ...................................... 140
REMOVAL ......................................................... 140
INSPECTION AFTER REMOVAL ..................... 142
INSTALLATION ................................................. 142
OIL PAN AND OIL STRAINER ............................... 145
Removal and Installation ...................................... 145
REMOVAL ......................................................... 145
INSPECTION AFTER REMOVAL ..................... 148
INSTALLATION ................................................. 148
INSPECTION AFTER INSTALLATION ............. 150
IGNITION COIL ....................................................... 152
Removal and Installation ...................................... 152
REMOVAL ......................................................... 152
INSTALLATION ................................................. 152
SPARK PLUG (PLATINUM-TIPPED TYPE) ........... 153
Removal and Installation ...................................... 153
REMOVAL ......................................................... 153
INSPECTION AFTER REMOVAL ..................... 153
INSTALLATION ................................................. 154FUEL INJECTOR AND FUEL TUBE ......................155
Removal and Installation ......................................155
REMOVAL .........................................................155
INSTALLATION .................................................157
INSPECTION AFTER INSTALLATION ..............159
ROCKER COVER ...................................................160
Removal and Installation ......................................160
REMOVAL .........................................................160
INSTALLATION .................................................161
FRONT TIMING CHAIN CASE ...............................163
Removal and Installation ......................................163
REMOVAL .........................................................163
INSTALLATION .................................................166
INSPECTION AFTER INSTALLATION ..............171
TIMING CHAIN ........................................................173
Removal and Installation ......................................173
REMOVAL .........................................................174
INSPECTION AFTER REMOVAL .....................180
INSTALLATION .................................................181
INSPECTION AFTER INSTALLATION ..............191
CAMSHAFT ............................................................192
Removal and Installation ......................................192
REMOVAL .........................................................192
INSPECTION AFTER REMOVAL .....................194
INSTALLATION .................................................197
INSPECTION AFTER INSTALLATION ..............201
Valve Clearance ...................................................202
INSPECTION ....................................................202
ADJUSTMENT ..................................................205
OIL SEAL ................................................................207
Removal and Installation of Valve Oil Seal ...........207
REMOVAL .........................................................207
INSTALLATION .................................................207
Removal and Installation of Front Oil Seal ...........208
REMOVAL .........................................................208
INSTALLATION .................................................208
Removal and Installation of Rear Oil Seal ............208
REMOVAL .........................................................208
INSTALLATION .................................................209
CYLINDER HEAD ...................................................210
On-Vehicle Service ...............................................210
CHECKING COMPRESSION PRESSURE .......210
Removal and Installation ......................................211
REMOVAL .........................................................211
INSPECTION AFTER REMOVAL .....................212
INSTALLATION .................................................213
INSPECTION AFTER INSTALLATION ..............215
Disassembly and Assembly ..................................215
DISASSEMBLY .................................................216
ASSEMBLY .......................................................216
Inspection After Disassembly ...............................218
VALVE DIMENSIONS ........................................218
VALVE GUIDE CLEARANCE ............................218
VALVE GUIDE REPLACEMENT .......................219
VALVE SEAT CONTACT ...................................220
VALVE SEAT REPLACEMENT .........................220
VALVE SPRING SQUARENESS .......................221
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD .............................221

PRECAUTIONS
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[QR]PRECAUTIONSPFP:00001
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectBBS005KH
NOTE:

This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT
SYSTEM).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Drain Engine CoolantBBS005KI
Drain engine coolant when engine is cooled.
Precautions for Disconnecting Fuel PipingBBS005KJ

Before starting work, make sure no fire or spark producing items are in the work area.

Release fuel pressure before disassembly.

After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyBBS005KK

When instructed to use special service tools, use the specified tools. Always be careful to work safely,
avoid forceful or uninstructed operations.

Exercise maximum care to avoid damage to mating or sliding surfaces.

Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.

Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.

When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified.
Precautions for Inspection, Repair and ReplacementBBS005KL
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationBBS005KM

Use torque wrench to tighten bolts or nuts to specification.

EM-6
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PRECAUTIONS


When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
fied, do exactly as specified.

Replace with new gasket, packing, oil seal or O-ring.

Dowel pins are used for several parts alignment. When replacing and reassemling with dowel pins, make
sure that dowel pins are installed in the original portion.

Thoroughly wash, clean, and air-blow each part. Carefully check oil or coolant passages for any restriction
and blockage.

Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.

Release air within route when refilling after draining coolant.

Before starting engine, apply fuel pressure to fuel lines with turning ignition switch “ON” (with engine
stopped). Then make sure that there are no leaks at fuel line connections.

After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust gases for leakage.
Parts Requiring Angle TighteningBBS005KN

Use angle wrench [SST: KV10112100] for the final tightening of the following engine parts.
–Cylinder head bolts
–Lower cylinder block bolts
–Connecting rod cap bolts
–Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angle
tightening)
–Balancer unit

Do not use a torque value for final tightening.

The torque value for these parts are for a preliminary step.

Ensure thread and seat surfaces are clean and coated with engine oil.
Precautions For Liquid GasketBBS005KO
REMOVAL OF LIQUID GASKET

After removing the mounting nuts and bolts, separate the mating
surface using seal cutter (SST) and remove the old liquid gasket
sealing.
CAUTION:
Be careful not to damage the mating surfaces.

Tap seal cutter to insert it, and then slide it by tapping on the
side as shown in the figure.

In areas where seal cutter is difficult to use, use plastic hammer
to lightly tap the areas where the liquid gasket is applied.
CAUTION:
If for some unavoidable reason tool such as screwdriver is
used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using scraper, remove the old liquid gasket adhering to the liq-
uid gasket application surface and the mating surface.

Remove the liquid gasket completely from the groove of the
liquid gasket application surface, mounting bolts and bolt
holes.
2. Wipe the liquid gasket application surface and the mating sur-
face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
PBIC0275E
PBIC0003E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
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Use the Chart Below to Help You Find the Cause of the Symptom.BBS0058R
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
of noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemRefer-
ence page Before
warm-
upAfter
warm-
upWhen
start-
ingWhen
idlingWhen
racingWhile
driving
Top of
engine
Rocker
cover
Cylinder
headTicking or
clickingCA—AB—Tappet
noiseValve clearanceEM-50
Rattle C A — A B CCamshaft
bearing
noiseCamshaft journal oil
clearance
Camshaft runoutEM-44EM-44
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock—A—BB—Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bush-
ing oil clearanceEM-99
EM-101
Slap or
rapA ——BBAPiston
slap noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsionEM-104EM-100
EM-100
EM-101
Knock A B C B B BConnect-
ing rod
bearing
noiseConnecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearanceEM-101EM-105
Knock A B — A B CMain
bearing
noiseMain bearing oil clear-
ance
Crankshaft runoutEM-106EM-105
Front of
engine
Front
coverTapping or
tickingA A —BBBTiming
chain and
chain ten-
sioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operationEM-57
EM-53
Front of
engineSqueak-
ing or fizz-
ingAB—B—CDrive belt
(Sticking
or slip-
ping)Drive belt deflection
EM-14
CreakingA B ABABDrive belt
(Slipping)Idler pulley bearing
operation
Squall
CreakA B —BABWater
pump
noiseWater pump operationCO-22,
"WATER
PUMP"

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DRIVE BELTS

DRIVE BELTSPFP:02117
Checking Drive BeltsBBS0058S
WARNING:
Be sure to perform this step when the engine is stopped.

Make sure that the indicator (notch on fixed side) of drive belt auto-tensioner is within the possible use
range (between three line notches on moving side).
NOTE:

Check the drive belt auto-tensioner indication when engine is cold.

When new drive belt is installed, the indicator (notch on fixed side) should be within the range “a” in the
figure.

Visually check entire belt for wear, damage or cracks.

If the indicator (notch on fixed side) is out of the possible use range or belt is damaged, replace drive belt.
Tension AdjustmentBBS0058T
Belt tensioning is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
Removal and InstallationBBS0058U
REMOVAL
1. Remove splash guard (RH).
2. With box wrench, and while securely holding the hexagonal part
in center of drive belt auto-tensioner pulley, move the wrench
handle in the direction of arrow (loosening direction of ten-
sioner).
CAUTION:

Avoid placing hand in a location where pinching may
occur if the holding tool accidentally comes off.

Do not loosen the hexagonal part in center of drive belt
auto-tensioner pulley (Do not turn it counterclockwise). If
turned counterclockwise, the complete drive belt auto-
tensioner must be replaced as a unit, including the pul-
ley.
3. Insert a rod approximately 6 mm (0.24 in) in diameter such as short-length screwdriver into the hole of the
retaining boss to fix drive belt auto-tensioner pulley.
4. Loosen drive belt from water pump pulley in sequence, and remove it.
PBIC2622E
PBIC2169E

DRIVE BELTS
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INSTALLATION
1. With box wrench, and while securely holding the hexagonal part
in center of drive belt auto-tensioner pulley, move the wrench
handle in the direction of arrow (loosening direction of ten-
sioner).
CAUTION:

Avoid placing hand in a location where pinching may
occur if the holding tool accidentally comes off.

Do not loosen the hexagonal part in center of drive belt
auto-tensioner pulley (Do not turn it counterclockwise). If
turned counterclockwise, the complete drive belt auto-
tensioner must be replaced as a unit, including the pul-
ley.
2. Insert a rod approximately 6 mm (0.24 in) in diameter such as short-length screwdriver into the hole of
retaining boss to fix drive belt auto-tensioner pulley.
3. Hook drive belt onto all pulleys except for water pump, and then onto water pump pulley finally.
CAUTION:

Confirm belt is completely set to pulleys.

Check for engine oil, working fluid and engine coolant are not adhered to drive belt and each
pulley groove.
4. Release drive belt auto-tensioner, and apply tension to drive belt.
5. Turn crankshaft pulley clockwise several times to equalize tension between each pulley.
6. Confirm tension of drive belt at indicator (notch on fixed side) is within the possible use range. Refer to
EM-14, "
Checking Drive Belts" .
Removal and Installation of Drive Belt Auto-TensionerBBS0058V
CAUTION:
The complete drive belt auto-tensioner must be replaced as a unit, including the pulley.
REMOVAL
1. Remove splash guard (RH).
2. Remove drive belt. Refer to EM-14, "
Removal and Installation" .
3. Release the fixed drive belt auto-tensioner pulley.
4. Remove drive belt auto-tensioner.
PBIC2627E
1. Drive belt auto-tensioner 2. Water pump pulley
PBIC2170E

INTAKE MANIFOLD
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10. Loosen mounting nuts and bolts in reverse order as shown in
the figure, and remove intake manifold (with fuel tube and fuel
injector assembly) and gasket.
CAUTION:

Do not disassemble intake manifold.

Cover engine openings to avoid entry of foreign materi-
als.
NOTE:
Disregard No. 6 when loosening.
INSTALLATION
Note the following, and install in the reverse order of removal.
Intake Manifold

If stud bolts were removed, install them and tighten to the specified torque below.

Check if gasket is not dropped from the installation groove of intake manifold.

Tighten in numerical order as shown in the figure.
NOTE:
No. 6 means double tightening of bolt No. 1.
Intake Manifold Support
Tighten mounting bolt from “A” to “B” in order as shown in the figure.
NOTE:
Tighten “A” in the figure together with electric throttle control actua-
tor. Refer to EM-21, "
Electric Throttle Control Actuator" for the tight-
ening procedure.
Electric Throttle Control Actuator

Tighten mounting bolts equally and diagonally in several steps
and in numerical order as shown in the figure.

Perform the “Throttle Valve Closed Position Learning” when har-
ness connector of electric throttle control actuator is discon-
nected. Refer to EC-47, "
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-47, "
Idle Air Volume Learning" .
PBIC2173E
: 10.8 N·m (1.1 kg-m, 8 ft-lb)
PBIC2173E
PBIC2628E
EMJ1612D