engine NISSAN PATROL 2000 Electronic Repair Manual

NVH Troubleshooting Chart Ð Engine Noise
Use the chart below to help you find the cause of the symptom.
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.
Location of
noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemReference
page Before
warm-upAfter
warm-upWhen
startingWhen
idlingWhen
racingWhile
driving
Top of
engine
Rocker
cover
Cylinder
headTicking or
clickingCAÐABÐTappet
noiseValve clearanceMA section
(ªAdjusting
Intake &
Exhaust
Valve
Clearanceº,
ªENGINE
MAINTE-
NANCEº)
Rattle C A Ð A B CCamshaft
bearing
noiseCamshaft bushing clearance
Camshaft runoutEM-1032,
1032
Crankshaft
pulley
Cylinder
block (Side
of engine)
Oil panSlap or
knockÐAÐB BÐPiston pin
noisePiston and piston pin clear-
ance
Connecting rod bushing
clearanceEM-1072,
1074
Slap or rap A Ð Ð B B APiston slap
noisePiston-to-bore clearance
Piston ring side clearance
Piston ring end gap
Connecting rod bend and
torsionEM-1076,
1073, 1073,
1074
Knock A B C B B BConnecting
rod bearing
noiseConnecting rod bushing
clearance (Small end)
Connecting rod bearing
clearance (Big end)EM-1074,
1078
Knock A B Ð A B CMain bear-
ing noiseMain bearing oil clearance
Crankshaft runoutEM-1079,
1077
Front of
engine
Timing gear
coverTapping or
tickingAAÐBBBTiming gear
noiseTiming gear backlash EM-1042
Front of
engineSqueaking
or fizzingABÐBÐCOther drive
belts (Stick-
ing or slip-
ping)Drive belts deflectionMA section
(ªChecking
Drive Beltsº,
ªENGINE
MAINTE-
NANCEº) CreakingABABABOther drive
belts (Slip-
ping)Idler pulley bearing operation
Squall
CreakABÐBABWater pump
bearing
noiseWater pump bearing opera-
tionLC section
(ªWater
Pump
Inspectionº,
ªENGINE
COOLING
SYSTEMº)
A: Closely related B: Related C: Sometimes related Ð: Not related
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTINGZD
EM-1009

1. Warm up engine.
2. Turn ignition switch OFF.
3.
Using CONSULT-II, make sure no error codes are indicated for
self-diagnosis items. Refer to EC section, ªFuel Pressure
Releaseº.
+Do not disconnect CONSULT-II until the end of this opera-
tion; it will be used to check engine rpm and for error detec-
tion at the end of this operation.
4. Disconnect the negative battery terminal.
5. Remove the following parts.
+Intercooler cover
+Intercooler
+Throttle body
+Rocker cover
6. To prevent fuel from being injected during inspection, remove
fuel injection pump fuse [ENG CONT (20A)] from fuse box on
the right side of engine compartment.
7. Remove glow plugs from all the cylinders.
+Before removal, clean the surrounding area to prevent
entry of any foreign materials into the engine.
+Carefully remove glow plugs to prevent any damage or
breakage.
+
Handle with care to avoid applying any shock to glow plugs.
8. Install adapter (SST) to installation holes of glow plugs and
connect compression gauge for diesel engine.
:15-19Nzm (1.5 - 2.0 kg-m, 11 - 14 ft-lb)
9. Connect battery negative terminal.
10. Set the ignition switch to ªSTARTº and crank. When gauge
pointer stabilizes, read compression pressure and engine
rpm. Repeat the above steps for each cylinder.
+Always use a fully-charged battery to obtain specified
engine speed.
Unit: kPa (bar, kg/cm2, psi)/rpm
Standard MinimumDifference limit between
cylinders
2,942 (29.42, 30.0, 427)/
2002,452 (24.52, 25.0, 356)/
200294 (2.94, 3.0, 43)/200
+When engine rpm is out of the specified range, check the
specific gravity of battery liquid. Measure again under cor-
rected conditions.
+If engine rpm exceeds the limit, check valve clearance and
combustion chamber components (valves, valve seats, cyl-
inder head gaskets, piston rings, pistons, cylinder bores, cyl-
inder block upper and lower surfaces) and measure again.
11. Complete this operation as follows:
a. Turn the ignition switch to ªOFFº.
b. Disconnect battery negative terminal.
c. Replace glow plug oil seals and install glow plugs.
d. Install fuel injection pump fuse [ENG CONT (20A)].
e. Connect battery negative terminal.
f. Using CONSULT-II make sure no error code is indicated for
items of self-diagnosis. Refer to EC section, ªTrouble Diag-
nosis Ð Indexº.
SEM318G
SEM334G
MEASUREMENT OF COMPRESSION PRESSURE
TROUBLESHOOTINGZD
EM-1010

Removal and Installation
REMOVAL
1. Remove the following parts.
+Drain engine coolant. Refer to MA section, ªChanging Engine
Coolantº.
+Remove engine cover. Refer to the figure at left.
+Remove intercooler.
+Remove air hose (on throttle body side).
+Remove injection tube.
+Remove or relocate wires/harnesses and tubes/pipes.
SEM292G
INTAKE MANIFOLDZD
EM-1012

Removal and Installation
REMOVAL
1. Remove the following parts.
+Undercover
+Under guard
+Engine coolant (drain)
Refer to MA section, ªChanging Engine Coolantº.
+Battery (on left side) (for cold areas)
+Exhaust front tube
Refer to FE section, ªRemoval and Installationº, ªEXHAUST
SYSTEMº.
+Remove wires, harnesses, tubes and pipes.
SEM295G
SEM296G
CATALYST AND TURBOCHARGERZD
EM-1014

Trouble diagnosis of turbocharger
Preliminary check:
Check that the VNT control valve system has no malfunction.
Refer to EC section, ªECM Terminals and Reference Valueº in
ªTROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONº.
+Check that the engine oil level is between MIN and MAX of
the dipstick. (When the engine oil amount is more than MAX,
the oil flows into the inlet duct through the blow-by gas
passage, and the turbocharger is misjudged failure.)
+Ask the customer if he/she always runs the vehicle in idle
engine speed to cool the oil down after driving.
+Replace the turbocharger assembly when any malfunction is
found after unit inspections specified in the table below.
+If no malfunction is found after the unit inspections, judge that
the turbocharger body has no failure. Check the other parts
again.
Inspection item Inspection resultSymptom (when each inspection item
meets each inspection result)
Oil leak-
ageSmoke NoiseInsuffi-
cient
power/
accel-
eration
failure
Turbine wheelOil leaks.n
nn
Carbon is accumulated.n
jj
Friction with housing.nj
j
Blades are bent or broken.
Compressor wheelInside the air inlet is seriously contami-
nated by oil.jj
Friction with housing.njj
Blades are bent or broken.
After checking both turbine and compressor,
inspect rotor shaft end play.There is resistance when the rotor shaft
is rotated by your fingertips.nnj
The rotor shaft sometimes does not
rotate by your fingertips.
There is too much play in the bearing.nnjn
Oil return portCarbon or sludge is accumulated in the
waste oil hole.n
nn
Operation of VNT control actuator+The actuator does not operate
smoothly when vacuum pressure is
gradually applied.
+Stroke amount is not in compliance
with the vacuum pressure.j
: Large possibility
j: Medium possibility
n: Small possibility
INSTALLATION
1. Install catalyst.
:29-39Nzm (2.9 - 3.3 kg-m, 21 - 23 ft-lb)
Place the protruding area of the gasket between the turbo-
charger and the exhaust outlet upwards, and install the lipped
side to the turbocharger side. Refer to the figure, EM-1014.
2. Install in the reverse order of removal.
CATALYST AND TURBOCHARGERZD
Inspection (Cont'd)
EM-1017

Removal and Installation
REMOVAL
1. Remove the following parts.
+Engine cover
+Intercooler
+Air inlet pipe
+Throttle body
+Wires, harnesses, tubes and pipes
2. Loosen holding bolts in the reverse order of that shown in the
figure and remove.
3. Remove rocker cover to the direction of glow plug tilt.
4. Remove glow plug oil seals.
SEM315G
SEM316G
ROCKER COVERZD
EM-1020

INSTALLATION
1. Temporarily tighten holding bolts in the numerical order
shown in the figure.
2. Apply Three Bond 1207C (KP510 00150) to the area shown
in the figure.
3. Use a scraper to remove old liquid gasket.
4. Apply once more.
5. Apply engine oil to glow plug oil seals and install them.
6. Tighten holding bolts in the numerical order shown in the
figure.
7. Re-tighten to the same torque in the same order as above.
8. Install in the reverse order of removal.
SEM317G
FEM001
SEM316G
ROCKER COVERZD
Removal and Installation (Cont'd)
EM-1021

Removal and Installation
REMOVAL [OIL PAN (LOWER)]
1. Remove the following parts.
+Remove undercover.
+Extract the engine oil.
2. Loosen the installation bolts in the reverse order of that
shown in the figure and then remove.
3. Using a seal cutter (SST), cut the liquid gasket to separate
it.
SEM319G
SEM341G
OIL PAN & OIL STRAINERZD
EM-1022

INSTALLATION [OIL PAN (LOWER)]
1. Install oil pan (Lower).
a. Use a scraper to remove all traces of liquid gasket from
mating surfaces.
+Also remove traces of liquid gasket from mating surface of oil
pan (Upper).
+Remove old liquid gasket from the bolt hole and thread.
b. Apply a continuous bead of liquid gasket to mating surface
of oil pan (Lower).
+Use Genuine Liquid Gasket or equivalent.
+Apply liquid gasket to the groove on the mating surface.
+Allow 7 mm (0.28 in) clearance around bolt holes.
c. Apply liquid gasket to inner sealing surface as shown in fig-
ure.
+Be sure liquid gasket is 3.5 to 4.5 mm (0.138 to 0.177 in).
+Attaching should be done within 5 minutes after coating.
2. Tighten the installation bolts in the order shown in the figure.
3. Install in the reverse order of removal.
REMOVAL [OIL PAN (UPPER) AND OIL STRAINER]
1. Remove the following parts.
+Engine cover
+Under covers
+Stabilizer; Refer to FA section in original Service Manual.
+Exhaust front tube and its bracket; Refer to FE section in
original Service Manual.
+Front propeller shaft and rear propeller shaft; Refer to PD
section in original Service Manual.
+Starter motor; Refer to EL section in original Service Manual.
+A/T or M/T assembly with transfer; Refer to AT section or MT
section in original Service Manual.
NOTE:
As there is a converter/clutch housing side oil pan (upper)
installation bolt as well, the transmission will also need to
be removed.
2. Loosen the installation bolts in the reverse order of that
shown in the figure and then remove.
3.
Using a seal cutter (SST), cut the liquid gasket to separate it.
4. Remove oil strainer
INSTALLATION [OIL PAN (UPPER) AND OIL STRAINER]
1. Clean oil strainer if any object is attached, and install oil
strainer.
2. Install oil pan (Upper).
a. Use a scraper to remove all traces of liquid gasket from
mating surfaces.
+Also remove traces of liquid gasket from mating surface of
cylinder block, front cover and oil pan (Lower).
+Remove old liquid gasket from the bolt hole and thread.
b. Apply a continuous bead of liquid gasket to mating surface
of oil pan (Upper).
SEM159F
SEM345GA
SEM346G
SEM159F
SEM347GA
OIL PAN & OIL STRAINERZD
Removal and Installation (Cont'd)
EM-1023

Removal and Installation
REMOVAL
1. Remove the following parts.
+Radiator under side
+Radiator shroud
+Cooling fan
+Chain cover front side
+A/T cooler hose (Disconnect)
+Vacuum hose
+Intercooler cover (When removing vacuum tank)
2. Remove the installation bolts and pull the vacuum pump from
the engine front directly.
3. If it is difficult to remove from the spline shaft connection, tap
lightly with a plastic hammer.
SEM320G
SEM321G
VACUUM PUMPZD
EM-1025