2000 NISSAN PATROL Electronic Repair Manual

Tool name Description
Deep socket (12 mm)
NT821
Removing and installing glow plugs
PREPARATIONZD
Commercial Service Tools (Cont'd)
EM-1007

SEM290G
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTINGZD
EM-1008

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
CAUTION:
To avoid damaging intercooler core when flushing inter-
cooler with high pressure water, apply water straight to the
core face.
SEM291G
INTERCOOLERZD
EM-1011

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

2. Remove intake manifold in the reverse order of that shown
in the figure.
Inspection
Clean surface of intake manifold.
Use a reliable straightedge and feeler gauge to check the flat-
ness of intake manifold surface.
Intake manifold surface flatness:
Limit 0.2 mm (0.008 in)
INSTALLATION
1. Tighten intake manifold in the numerical order shown in the
figure.
:25-28Nzm (2.5 - 2.9 kg-m, 18 - 20 ft-lb)
2. Install in the reverse order of removal.
SEM293G
SEM294G
INTAKE MANIFOLDZD
Removal and Installation (Cont'd)
EM-1013

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