2003 NISSAN ALMERA N16 check engine

SMA089D
Engine Coolant Mixture Ratio=NJMA0006S03The engine cooling system is filled at the factory with a high-quality,
year-round and extended life engine coolant. The high quality
engine coolant contains the specific solutions effective for the anti-
corrosion and the anti-freeze function. Therefore, additional cool-
ing system additives are not necessary.
CAUTION:
For Europe
When adding or replacing coolant, be sure to use only
Genuine NISSAN Anti-freeze Coolant (L250) or equivalent.
Because L250 is premixed type coolant.
Except for Europe
When adding or replacing coolant, be sure to use only a
Nissan Genuine Engine Coolant or equivalent in its qual-
ity with the proper mixture ratio. See the examples shown
left.
The use of other types of engine coolant may damage your
cooling system.
When checking the engine coolant mixture ratio by the coolant
hydrometer, use the chart below to correct your hydrometer
reading (specific gravity) according to coolant temperature.
Mixed coolant specific gravity
Unit: specific gravity
Engine coolant mixture
ratioCoolant temperature °C (°F)
15 (59) 25 (77) 35 (95) 45 (113)
30% 1.046 - 1.050 1.042 - 1.046 1.038 - 1.042 1.033 - 1.038
50% 1.076 - 1.080 1.070 - 1.076 1.065 - 1.071 1.059 - 1.065
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could be caused by high pressure fluid escaping from
the radiator. Wait until the engine and radiator cool down.
GI
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
RECOMMENDED FLUIDS AND LUBRICANTS
Engine Coolant Mixture Ratio
MA-21

EM-1
ENGINE MECHANICAL
B ENGINE
CONTENTS
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SECTION
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ENGINE MECHANICAL
QG
PRECAUTIONS .......................................................... 3
Precautions for Drain Coolant .................................. 3
Precautions for Disconnecting Fuel Piping .............. 3
Precautions for Removal and Disassembly ............. 3
Precautions for Inspection, Repair and Replace-
ment ......................................................................... 3
Precautions for Assembly and Installation ............... 3
Parts Requiring Angular Tightening ......................... 3
Precautions for Liquid Gasket .................................. 4
REMOVAL OF LIQUID GASKET SEALING .......... 4
LIQUID GASKET APPLICATION PROCEDURE ..... 4
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
Commercial Service Tools ........................................ 7
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 9
NVH Troubleshooting —Engine Noise ..................... 9
Use the Chart Below to Help You Find the Cause
of the Symptom. ..................................................... 10
DRIVE BELTS ............................................................11
Checking Drive Belts ............................................... 11
Tension Adjustment ................................................ 12
POWER STEERING PUMP AND WATER PUMP
BELT ................................................................... 12
ALTERNATOR AND AIR CONDITIONER COM-
PRESSOR BELT ................................................. 12
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 13
AIR CLEANER AND AIR DUCT ............................... 14
Removal and Installation ........................................ 14
REMOVAL ........................................................... 14
INSTALLATION ................................................... 14
Changing Air Cleaner Element ............................... 15
INTAKE MANIFOLD ................................................. 16
Removal and Installation ........................................ 16
REMOVAL ........................................................... 16
INSPECTION AFTER REMOVAL ....................... 18
INSTALLATION ................................................... 18EXHAUST MANIFOLD AND CATALYTIC CON-
VERTER .................................................................... 19
Removal and Installation ........................................ 19
REMOVAL ........................................................... 19
INSPECTION AFTER REMOVAL ....................... 20
INSTALLATION ................................................... 20
Disassembly and Assembly .................................... 21
DISASSEMBLY ................................................... 21
ASSEMBLY ......................................................... 21
OIL PAN AND OIL STRAINER ..............................
... 22
Removal and Installation ........................................ 22
REMOVAL ........................................................... 22
INSTALLATION ................................................... 23
INSPECTION AFTER INSTALLATION ................ 23
IGNITION COIL ......................................................... 24
Removal and Installation ........................................ 24
REMOVAL ........................................................... 24
INSTALLATION ................................................... 24
SPARK PLUG (CONVENTIONAL) ........................... 25
Removal and Installation ........................................ 25
REMOVAL ........................................................... 25
INSPECTION AFTER REMOVAL ....................... 25
INSTALLATION ................................................... 25
FUEL INJECTOR AND FUEL TUBE ........................ 26
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
INSTALLATION ................................................... 27
INSPECTION AFTER INSTALLATION ................ 28
ROCKER COVER ..................................................... 29
Removal and Installation ........................................ 29
REMOVAL ........................................................... 29
INSTALLATION ................................................... 30
CAMSHAFT .............................................................. 32
Removal and Installation ........................................ 32
REMOVAL ........................................................... 32
INSTALLATION ................................................... 35

EM-10
[QG]
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
Use the Chart Below to Help You Find the Cause of the Symptom.
EBS00LPX
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 noiseTy p e o f
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
headTick in g o r
clickingCA—AB—Tappet
noise
●Valve clearanceEM-42
Rattle C A — A B CCamshaft
bearing
noise
●Camshaft journal
clearance
●Camshaft runoutEM-39EM-39
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock—A—B B—Piston pin
noise
●Piston and piston pin
clearance
●Connecting rod
bushing clearanceEM-84EM-87
Slap or
rapA——B B APiston
slap noise
●Piston-to-bore clear-
ance
●Piston ring side
clearance
●Piston ring end gap
●Connecting rod bend
and torsionEM-88
EM-85
EM-86
EM-86
Knock A B C B B BConnect-
ing rod
bearing
noise
●Connecting rod
bushing clearance
(Small end)
●Connecting rod bear-
ing clearance (Big
end)EM-87EM-87
Knock A B — A B CMain
bearing
noise
●Main bearing oil
clearance
●Crankshaft runoutEM-91EM-90
Front of
engine
Timing
chain
coverTapping or
tickingAA—BBBTiming
chain and
chain ten-
sioner
noise●Timing chain cracks
and wear
●Timing chain ten-
sioner operationEM-51EM-47
Front of
engineSqueak-
ing or fizz-
ingAB—B—CDrive belts
(Sticking
or slip-
ping)
●Drive belts deflection
EM-11
CreakingABABABDrive belts
(Slipping)●Idler pulley bearing
operation
Squall
CreakAB—BABWater
pump
noise
●Water pump opera-
tionLC-14

DRIVE BELTS
EM-11
[QG]
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DRIVE BELTSPFP:02117
Checking Drive BeltsEBS00LPY
●Before inspecting the engine, make sure the engine has cooled down; wait approximately 30 minutes
after the engine has been stopped.
●Visually inspect all belts for wear, damage, or cracks on contacting surfaces and edge areas.
●When measuring deflection, apply 98 N (10 kg, 22 lb) at the ▼ marked point.
CAUTION:
When measuring belt tension immediately after belt is installed, first set the tension to the standard.
Then, rotate crankshaft for more than two turns in order to eliminate variance in belt deflection
between the pulleys. Re-measure and adjust the tension to the standard.
PBIC0764E
Deflection adjustment Unit: mm (in)
Used belt
New belt
Limit After adjustment
AlternatorWithout air conditioner compressor 10.2 (0.402)6.5 - 7.0
(0.256 - 0.276)5.5 - 6.1
(0.217 - 0.240)
With air conditioner compressor 8.1 (0.319)5.3 - 5.7
(0.209 - 0.224)4.5 - 5.0
(0.177 - 0.197)
Power steering oil pump 7.1 (0.280)4.4 - 4.9
(0.173 - 0.193)3.9 - 4.4
(0.154 - 0.173)
Applied pushing force 98 N (10 kg, 22 lb)

EM-20
[QG]
EXHAUST MANIFOLD AND CATALYTIC CONVERTER
●Using heated oxygen sensor wrench, remove heated oxygen
sensor.
CAUTION:
●Be careful not to damage heated oxygen sensor.
●When using heated oxygen sensor wrench, tighten to the
middle of specified torque because length of tool may
induce sight indication increase. (Do not tighten to the
maximum specified torque)
●Do not over torque the heated oxygen sensor. Doing so
may cause damage to the heated oxygen sensor, result-
ing in the MI coming on.
6. Remove exhaust manifold cover.
7. Loosen mounting nuts in reverse order shown in figure to
remove exhaust manifold and catalytic converter assembly.
INSPECTION AFTER REMOVAL
Surface Distortion
●Use a reliable straightedge and feeler gauge to check the flat-
ness of exhaust manifold fitting surface.
INSTALLATION
●Install in the reverse order of removal after this step.
●Tighten mounting nuts for exhaust manifold and catalytic con-
verter assembly in order shown in figure.
●Before installing exhaust manifold support, apply liquid gasket to
contact surface on engine side.
Use Genuine Liquid Gasket or equivalent.
Installation of Heated Oxygen Sensor
CAUTION:
●Do not over torque the heated oxygen sensor. Doing so may cause damage to the heated oxygen
sensor, resulting in the MI coming on.
PBIC0541E
PBIC0542E
Limit : 0.3 mm (0.012 in)
PBIC0543E
PBIC0542E

OIL PAN AND OIL STRAINER
EM-23
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7. Insert Tool (Seal cutter) between oil pan and cylinder block.
Slide tool by tapping on the side of the tool with a hammer.
Remove oil pan.
8. Remove oil strainer.
INSTALLATION
1. Install oil strainer.
NOTE:
Gasket and O-ring are not used for sealed area with oil pump.
2. Install oil pan drain plug.
●Referring to “Components”, install drain plug washer.
3. Apply a continuous bead of liquid gasket to position shown in figure.
Use Genuine Liquid Gasket or equivalent.
4. Tighten mounting nuts and bolts in order shown in figure.
●Install mounting nuts and bolts as follows.
5. Install center member.
Refer to ENGINE ASSEMBLY, EM-67, "
Removal and Installa-
tion" .
6. Install remaining parts in the reverse order of removal.
INSPECTION AFTER INSTALLATION
●Check for leakage of engine oil when engine is warmed.
●Pour engine oil or start engine at least 30 minutes after oil pan is installed.
SEM365EA
PBIC0549E
Mounting bolt:
[Shank length under
head 10 mm (0.39 in)]: Nos. 1 - 10, 13, 14
[Shank length under
head 12 mm (0.47 in)]: Nos. 11, 12
SEM072F

FUEL INJECTOR AND FUEL TUBE
EM-27
[QG]
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CAUTION:
Do not touch fuel injector nozzle with intake manifold or other parts.
5. Remove fuel injector from fuel tube.
●Release clip and remove it.
●Pull fuel injector straight out of fuel tube.
CAUTION:
●Be careful not to damage nozzle part.
●Avoid any impact such as a dropping.
●Do not disassemble or adjust it.
INSTALLATION
1. When installing O-ring to fuel injector, follow instructions described below.
CAUTION:
●Handle O-ring with bare hands. Never wear gloves.
●Lubricate O-ring with new engine oil.
●Do not clean O-ring with solvent.
●Make sure that O-ring and its mating part are free of foreign material.
●Be careful not to scratch it with a tool or fingernails during installation. Also be careful not to
twist or stretch O-ring. If O-ring is stretched while being attached, do not insert it into fuel tube
immediately.
●Insert O-ring straight into fuel tube. Do not angle or twist it.
2.
Install fuel injector to fuel tube with the following procedure.
a. Insert clip into clip mounting groove on fuel injector.
●Insert clip so that lug “A” of fuel injector matches notch “A” of
the clip.
CAUTION:
●Do not reuse clip. 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 into fuel tube with clip attached.
●Insert it while matching it to the axial center.
●Insert fuel injector so that lug “B” of fuel tube matches notch
“B” of the clip.
●Make sure that fuel tube flange is securely fixed in flange fix-
ing groove on clip.
c. Make sure that installation is complete by checking that fuel
injector does not rotate or come off.
PBIC0620E
PBIC1021E

EM-28
[QG]
FUEL INJECTOR AND FUEL TUBE
3. Tighten mounting bolts in two steps in numerical order shown in
figure.
4. Install fuel feed hose.
CAUTION:
Install hose clamp avoiding interference with bulge, and
securely tighten it
5. Install remaining parts in the reverse order of removal.
INSPECTION AFTER INSTALLATION
●Check for fuel leakage with following procedure.
1. Turn ignition switch ON (do not start engine), and check connections for leakage by applying fuel pressure
to fuel piping.
2. Start engine, and re-check connections for fuel leakage by increasing engine speed. 1st step : 11.8 - 13.8 N·m (1.2 - 1.4 kg-m, 9 - 10 ft-lb)
2nd step : 17 - 23 N·m (1.7 - 2.4 kg-m, 13 - 17 ft-lb)
PBIC0617E