2003 NISSAN TEANA Engine block

EC-688
[VQ]
FUEL INJECTOR

6. CHECK FUNCTION OF FUEL INJECTOR-III
1. Reconnect all harness connector disconnected.
2. Start engine.
3. Listen to fuel injectors No. 2, No. 4, No.6 operating sound.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7. CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Turn ignition switch ON.
4. Check voltage between fuel injector terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M52, F103

Harness connectors F1, F251

Fuse block (J/B) connector M1

10A fuse

Harness for open or short between fuel injector and fuse
>> Repair harness or connectors. Clicking noise should exist.
PBIB1986E
Voltage: Battery voltage
PBIB2182E
PBIB0582E

EI-6
SQUEAK AND RATTLE TROUBLE DIAGNOSES

DUPLICATE THE NOISE AND TEST DRIVE
If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or location of the noise. This information can be used to
duplicate the same conditions when you confirm the repair.
If the noise can be duplicated easily during the test drive, to help identify the source of the noise, try to dupli-
cate the noise with the vehicle stopped by doing one or all of the following:
1) Close a door.
2) Tap or push/pull around the area where the noise appears to be coming from.
3) Rev the engine.
4) Use a floor jack to recreate vehicle “twist”.
5) At idle, apply engine load (electrical load, half-clutch on M/T model, drive position on A/T model).
6) Raise the vehicle on a hoist and hit a tire with a rubber hammer.

Drive the vehicle and attempt to duplicate the conditions the customer states exist when the noise occurs.

If it is difficult to duplicate the noise, drive the vehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, check ASIST for Technical Service Bulletins (TSBs) related
to that concern or symptom.
If a TSB relates to the symptom, follow the procedure to repair the noise.
LOCATE THE NOISE AND IDENTIFY THE ROOT CAUSE
1. Narrow down the noise to a general area. To help pinpoint the source of the noise, use a listening tool
(Engine Ear or mechanics stethoscope).
2. Narrow down the noise to a more specific area and identify the cause of the noise by:

removing the components in the area that you suspect the noise is coming from.
Do not use too much force when removing clips and fasteners, otherwise clips and fastener can be broken
or lost during the repair, resulting in the creation of new noise.

tapping or pushing/pulling the component that you suspect is causing the noise.
Do not tap or push/pull the component with excessive force, otherwise the noise will be eliminated only
temporarily.

feeling for a vibration with your hand by touching the component(s) that you suspect is (are) causing the
noise.

placing a piece of paper between components that you suspect are causing the noise.

looking for loose components and contact marks.
Refer to EI-7, "
Generic Squeak and Rattle Troubleshooting" .
REPAIR THE CAUSE

If the cause is a loose component, tighten the component securely.

If the cause is insufficient clearance between components:
–separate components by repositioning or loosening and retightening the component, if possible.
–insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape or ure-
thane tape are available through your authorized Nissan Parts Department.
CAUTION:
Do not use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
Always check with the Parts Department for the latest parts information.
Each item can be ordered separately as needed.
URETHANE PADS [1.5 mm (0.059 in) thick]
Insulates connectors, harness, etc.
76268-9E005: 100 × 135 mm (3.94 × 5.31 in)/76884-71L01: 60 × 85 mm (2.36 × 3.35 in)/76884-71L02: 15 ×
25 mm (0.59 × 0.98 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
73982-9E000: 45 mm (1.77 in) thick, 50 × 50 mm (1.97 × 1.97 in)/73982-50Y00: 10 mm (0.39 in) thick, 50
× 50 mm (1.97 × 1.97 in)
INSULATOR (Light foam block)
80845-71L00: 30 mm (1.18 in) thick, 30 × 50 mm (1.18 × 1.97 in)

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

EM-4 ENGINE ASSEMBLY ..............................................223
Removal and Installation ......................................223
REMOVAL .........................................................224
INSTALLATION ..................................................226
INSPECTION AFTER INSTALLATION ..............226
CYLINDER BLOCK .................................................228
Disassembly and Assembly ..................................228
DISASSEMBLY .................................................229
ASSEMBLY .......................................................233
How to Select Piston and Bearing ........................239
DESCRIPTION ..................................................239
HOW TO SELECT PISTON ...............................240
HOW TO SELECT CONNECTING ROD BEAR-
ING ....................................................................241
HOW TO SELECT MAIN BEARING ..................242
Inspection After Disassembly ...............................245
CRANKSHAFT END PLAY ................................245
CONNECTING ROD SIDE CLEARANCE .........245
PISTON TO PISTON PIN OIL CLEARANCE ....245
PISTON RING SIDE CLEARANCE ...................246
PISTON RING END GAP ..................................246
CONNECTING ROD BEND AND TORSION .....247
CONNECTING ROD BIG END DIAMETER ......247
CONNECTING ROD BUSHING OIL CLEAR-
ANCE .................................................................247
CYLINDER BLOCK DISTORTION ....................248
MAIN BEARING HOUSING INNER DIAMETER .249
PISTON TO CYLINDER BORE CLEARANCE ..249
CRANKSHAFT MAIN JOURNAL DIAMETER ...250
CRANKSHAFT PIN JOURNAL DIAMETER ......251
CRANKSHAFT OUT-OF-ROUND AND TAPER .251
CRANKSHAFT RUNOUT ..................................251
CONNECTING ROD BEARING OIL CLEAR-ANCE .................................................................251
MAIN BEARING OIL CLEARANCE ...................252
CRUSH HEIGHT OF MAIN BEARING ..............253
CRUSH HEIGHT OF CONNECTING ROD
BEARING ...........................................................253
MAIN BEARING CAP BOLT OUTER DIAMETER .253
CONNECTING ROD BOLT OUTER DIAMETER .253
DRIVE PLATE ....................................................254
OIL JET (VQ35DE) ............................................254
OIL JET RELIEF VALVE (VQ35DE) ..................254
SERVICE DATA AND SPECIFICATIONS (SDS) ....255
Standard and Limit ................................................255
GENERAL SPECIFICATIONS ...........................255
VALVE TIMING ..................................................255
DRIVE BELT ......................................................256
INTAKE MANIFOLD COLLECTOR, INTAKE
MANIFOLD AND EXHAUST MANIFOLD ..........256
SPARK PLUG ....................................................256
CAMSHAFT AND CAMSHAFT BEARING .........257
CYLINDER HEAD ..............................................260
CYLINDER BLOCK ............................................264
PISTON, PISTON RING AND PISTON PIN ......265
CONNECTING ROD ..........................................266
CRANKSHAFT ...................................................267
MAIN BEARING .................................................268
CONNECTING ROD BEARING .........................269

EM-6
[QR]
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
EM-13
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EM

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"

EM-26
[QR]
OIL PAN AND OIL STRAINER

OIL PAN AND OIL STRAINERP F P : 1111 0
Removal and InstallationBBS00590
REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain the engine oil when the engine is hot.
NOTE:
When removing oil pan (lower) or oil strainer only, take step 2 then step 8 and 9, the other steps are unneces-
sary.
1. Remove undercover and splash guard (RH).
2. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine oil on drive belt.
3. Remove drive belt. Refer to EM-14, "
DRIVE BELTS" .
4. Remove exhaust front tube. Refer to EX-2, "
EXHAUST SYSTEM" .
5. Remove A/C compressor with piping connected. And locate it aside temporarily with ropes or equivalent
not to disturb the following work. Refer to ATC-134, "
Removal and Installation of Compressor" .
6. Remove oil level gauge guide.
7. Remove oil filter. Refer to LU-10, "
OIL FILTER" .
8. Remove oil pan (lower) with the following procedure:
1. Oil level gauge 2. Oil level gauge guide 3. O-ring
4. Oil pan (upper) 5. Cylinder block 6. O-ring
7. Oil filter 8. O-ring 9. Drain plug washer
10. Oil strainer 11. Drain plug 12. Oil pan (lower)
13. Rear plate cover
PBIC2177E

OIL PAN AND OIL STRAINER
EM-27
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EM

a. Loosen mounting bolts in reverse order as shown in the figure.
b. Insert seal cutter (SST) between oil pan (upper) and oil pan
(lower).
CAUTION:

Be careful not to damage the mating surfaces.

Do not insert screwdriver, this will damage the mating
surfaces.
c. Slide seal cutter by tapping on the side of the tool with hammer.
9. Remove oil strainer.
10. Remove oil pan (upper) with the following procedure:
a. Remove rear plate cover, and four transaxle joint bolts. Refer to AT- 2 4 1 , "
TRANSAXLE ASSEMBLY" .
b. Securely support bottom of transaxle with suitable transmission jack.
c. Remove engine mounting related parts below. Refer to EM-77, "
ENGINE ASSEMBLY" .

RH engine mounting insulator bolts (vehicle side)

Front engine mounting through-bolt

Rear engine mounting through-bolt
d. Loosen bolts in reverse order as shown in the figure.
NOTE:
Disregard No.12 and 17 when loosening.
e. Insert seal cutter (SST) between oil pan (upper) and cylinder
block, and slide it by tapping on the side of the tool with hammer.
CAUTION:

Be careful not to damage the mating surfaces.

Do not insert screwdriver, this will damage the mating
surfaces.
f. Lift up engine and transaxle assembly with transmission jack to make a room for pulling oil pan (upper)
out.
KBIA0096E
SEM365EA
SBIA0233E
SEM365EA