check engine NISSAN 300ZX 1984 Z31 Maintenance Workshop Manual

GENERAL MAINTENANCE
General maintenance includes those items which should be checked during the normal day-today operation
of the vehicle They are essential if the vehicle is to continue operating properly The owners can perform the
checks and inspections themselves
or they can have their N ISSAN/DATSUN dealers do them for a nominal
charge
Item Reference item in MA section
OUTSIDE THE VEHICLE
Tires Check the pressure with
a gauge periodically when at
a service station, including the spare, and adjust to the
specified pressure
if necessary Check carefully for damage,
cuts
or excessive wear.
Wheel nuts When checking the tires, make sure no nuts are TIRE REPLACEMENT
missing, and check for any loose nuts Tighten if neces-
sary
0 CHECKING TIRE CONDITION
Wheel nut
Tire rotation Tires should be rotated every 24.000 km 0 TIRE ROTATION
(15,000 miles).
Wheel alignment and balance If the vehicle should pull to 0 CHECKING TIRE CONDITION
either side while driving on
a straight and level road, or if
you detect uneven or abnormal tire wear, there may be a 0 CHECKING WHEEL ALIGNMENT
need for wheel alignment
If the steering wheel or seat 0 WHEEL INSPECTION
vibrates
at normal highway speeds, wheel balancing may be
needed.
Abnormal tire wear
Windshield glass Check for abrasions or scratches -
Windshield wiper blades Check for cracks or wear if they do
not wipe properly
Doors and engine hood Check that all doors and the engine
hood operate smoothly
as well as the trunk lid and back
hatch.
Also ensure, that all latches lock securely Lubricate
if necessary. Make sure that the secondary latch keeps the
hood from opening when the primary latch
is released
-
0 LUBRICATING LOCKS, HINGES AND HOOD
LATCH
INSIDE THE VEHICLE
The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, clean-
ing
the vehicle, etc.
turn signal lights. and other lights are all operating properly
and installed securely.
Also check headlight aim.
Lights Make sure that the headlights,stop lights. tail lights. -
Warning lights and buaerslchimes Make sure that all warn-
ing lights and buzzers/chimes are operating properly
Horn Make sure it operates properly -
Windshield wrper and washer Check that the wipers and
washer operate properly and that the wipers do not streak

GENERAL MAINTENANCE
Item Reference item in MAsection
Windshield defroster Check that the air comes out of the
defroster outlets properly and in sufficient quantity when
operating the heater or
air conditioner
Rear view mirror Make sure that it is secure
-
-
Sun visors Make sure that they can be moved freely and are
secure
Steering wheel Check that it has the specified free play Be
sure to check for changes in the steering condition, such
as
excessive free play, hard steering or strange noises
-
Specification
Free
play Less than 35 mm (1 38 in)
Seats Check front seat position controls such as seat adjust- -
ters, seatback recliner, etc to ensure they operate smoothly
and that
all latches lock securely in every position Check
that the head restraints move up and down smoothly and
that
the locks (if so equipped) hold securely in all latched
positions Check that the latches lock securely for folding-
down rear seatbacks
Seat belts Check that all parts of the seat belt system e g
buckles, anchors and retractors operate property and ANCHORS, RETRACTORS AND ADJUSTER
smoothly Check the belt webbing for cuts, fraying, wear or
damage
INSPECTING SEAT BELTS, BLUCKLES,
Accelerator pedal Check the pedal for smooth operation -
and make sure the pedal does not catch or require uneven
effort
Clutch pedal Make sure the pedal operates smoothly and
check that
it has the proper free travel
ADJUSTING CLUTCH PEDAL HEIGHT AND
FREE PLAY
Brakes Check that the brake does not pull the vehicle to
one side when applied
Brake pedal Check the pedal for smooth operation and
make sure
it has the proper distance under it when de-
pressed fully Check the brake booster function
CHECKING BRAKE PEDAL DEPRESSED HEIGHT
0 CHECKING BRAKE BOOSTER FUNCTION
Parking brake Check that the lever has the proper travel and
confirm that your vehicle
is held securery on a fairly steep
hill with only the parking brake applied
0 CHECKING PARKING BRAKE
Automatic transmission "Park" mechanism Check that the
lock release button on the selector lever operates properly
and smoothly
On a fairly steep hill check that your vehicle
is held securely with the selector lever in the "P" wsition
without
aDDlvina anv brakes
UNDER THE HOOD AND VEHICLE
The maintenance items listed here should be checked periodically e g each time you check the engine oil or refuel
MA-5

GENERAL MAINTENANCE
Item
Windshield washer fluid Check that there
is adequate fluid
in the tank
Reference item in MA section
-
Engine coolant level Check the coolant level when the -
engine is cold
Radiator and hoses Check the front of the radiator and
clean off any dirt, insects,
leaves, etc , that may have
accumulated Make sure the hoses have no cracks, deforrna-
tion, rot or loose connections
Brake and clutch fluid levels Make sure that the brake and CHECKING CLUTCH FLUID LEAKS
clutch fluid
levels are between the "MAX" and "MIN" lines INSPECTING BRAKE LINES & HOSES
on the reservoir
Engine drwe belts Make sure that no belt if frayed, worn,
cracked or oily CHECKING AND ADJUSTING DRIVE BELT
Engine oil level Check the level on the dipstick after park- -
ing the vehicle on a level spot and turning off the engine
Power steering fluid level Check the level on the dipstick
when the fluid
is cold and the engine is turned off
0 CHECKING POWER STEERING FLUID LEVEL
Automatic transmission fluid level Check the level on the CHECKING AUTOMATIC TRANSMISSION
dipstick after putting the selector
level in "P" with the FLUID LEVEL
engine idling
Exhaust system Make sure there are no loose supports, 0 INSPECTING EXHAUST SYSTEM
cracks or holes If the sound of the exhaust seems unusual
or there
is a smell of exhaust fumes, immediately locate the
trouble and correct
it
Underbody The underbody is frequently exposed to corro-
sive substances such as those used on icy roads or to control
dust
It is very impOrtant to remove these substances, other-
wise rust will form on the floor pan, frame, fuel lines and
around
the exhaust system. At the end of winter, the
underbody should be thoroughly flushed with plain water,
being careful to clean those
areas where mud and dirt can
easily accumulate.
Fluid leaks Check under the vehicle for fuel, oil, water or
other fluid
leaks after the vehicle has been parked for a 0 INSPECTING MANUAL TRANSMISSION OIL
while.
Water dripping from the air conditioner after use is 0 INSPECTING AUTOMATIC TRANSMISSION FLUID
normal. If you should notice
any leaks or gasoline fumes
are evident, check for
the cause and correct it immediately.
0 CHECKING CLUTCH FLUID LEAKS
0 INSPECTING DIFFERENTIAL GEAR OIL
0 INSPECTING FRONT AXLE AND SUSPENSION
0 INSPECTING REAR AXLE AND SUSPENSION
0 INSPECTING BRAKE LINES & HOSES
0 CHECKING POWER STEERING LINE & HOSES
PARTS
PARTS
MA-6

ENGINE MAINTENANCE
Aw conditioner
compressor
Power steering oil pump
Applied pushing force
Checking Drive Belts
1 Inspect for cracks, fraying, wear or oil adhe-
sion Replace
if necessary
The belts should not touch
the bottom of the
pulley groove.
2
Adjust if belt deflections exceed the limit.
0 VG3OE engine (without turbocharger)
Check drive belt deflections by pushing middle
between pulleys
16 9-11 7-9
10 63) (0 35.0431 (0 28 - 0 351
21 13-16 10-13 (083) (051 -0631 (039-0511
98 N (10 kg. 22 Ibl
Power steering
Alternator pulley
Water pump pulle
SMA777A
VG30ET engine (with turbocharger)
Replacing Air Cleaner Filter-
The viscous paper type air cleaner filter does not
require any cleaning operation between renewals.
SMA779A
Checking Vapor Lines
1. Visually inspect vapor lines for proper attach-
ment, cracks, damage,
loose connections,
chafing and deterioration
2. Check vacuum relief valve for clogging,
sticking, etc
MA-8

ENGINE MAINTENANCE
Checking Fuel System
Check fuel lines and tank for proper attachment,
leaks, cracks, damage,
loose connections, chafing
and deterioration
SMA803A
CAUTION.
a. Do not reuse fuel hose clamp after loosening
b. Tighten high pressure rubber hose clamp
so
that clamp end is 3 mm (0.12 in) from hose
end or screw position (wider than other
portions of clamp)
is flush with hose end.
Tightening torque specifications are the same
for all rubber hose clamps.
When tightening hose clamp, ensure that screw
does not come into contact with adjacent
parts
10-1dNm IO 10 -0.15 kgm. 07 - 1 1 h-lbl
SMAS04A
Replacing Fuel Filter
Before removing fuel filter, release fuel pressure
from fuel line
to eliminate danger.
1 Start engine
2 Remove luggage floor mat
3. Disconnect fuel pump harness connector with
engine running
SEF7148
4. After engine stalls, crank engine two or three
times to make sure that pressure
is released
5 Turn ignition switch off and connect fuel
pump harness connector
6 Loosen fuel hose clamps
SMA780A
7 Replace fuel filter.
Do not reuse fuel hose clamps.
Be careful not to spill fuel over engine com-
partment. Place a rag
to absorb fuel.
Use high pressure type fuel filter. Do not use a
synthetic resinous
fuel filter.
MA-9
I

ENGINE MAINTENANCE
Changing Engine Oil and Oil Filter
1
2
Warm up engine, and check for oil leakage
from engine components
Change engine
oil and oil filter
Oil capacity:
With oil filter
Without
oil filter
4.0 p (4-1/4 US qt, 3-1/2 Imp qt)
3.3 2 (3-1/2 US qt, 2-7/8 Imp qt)
* Loose" SMA785A 29 - 39 N m (3 0 .4 0 kg-m, 22 . 29 ft-lbl
a. Be careful not to burn yourself as engine oil
is hot.
b. Be sure to clean drain plug and install with
washer.
c. Before installing new oil filter, wipe oil filter
mounting surface
on cylinder block, and
smear
a little engine oil on rubber seal of oil
filter.
d. When installing oil filter, DO NOT use a
wrench to tighten the filter.
Hand-tighten
ONLY
e. Use recommended engine oil.
Start engine Check area around drain plug and
oil filter for any sign of oil leakage.
Run engine for a few minutes, then turn it off
After several minutes, check oil level
Oil'level should be within this range
c---l 011 level should be IO range maintained
SMA786A
MA-I 1
4

ENGINE MAINTENANCE
Checking and Replacing Spark Plugs
CHECKING AND REPLACING SPARK PLUGS
VG30E
Standard type BCPRGES-11
1 Disconnect spark plug wire at boot Do not
pull on the wires
VG30ET
BCPRGE-11 2. Remove spark plugs with spark plug wrench.
3. After cleaning spark plugs, inspect insulator
for cracks or chips,
gasket for damage or
deterioration and electrode for wear and
burning.
If they are excessively worn, replace
with new spark plugs.
Hot type I BCPRSESI 1
4. Check spark plug gap
BCPR5E-I 1
Slde elecrrode ~~~~
Cold type
Gap 1 0.1 1 mm (0 039 - 0 043 in)
BCPR7ES-11
BCPR7E-11
MA-1 2

ENGINE MAINTENANCE
Checking and Replacing
Spark Plugs (Cont’d)
5 Install spark plugs Reconnect high tension
cables according to
Nos indicated on them.
0 . Spark plug
20 - 29 Nm
(2.0 - 3.0 kg-m, 14 - 22 ft-lb)
Checking Ignition Wires
1. Check the high tension wires for cracks,
damage, burned terminals and proper fit
2. Measure the resistance of the high tension
wires, by shaking it and checking for intermit-
tent brakes
SMA789A
MA-I 3

ENGINE MAINTENANCE
Checking idle Speed (VG30E engine)
Preparation
WARNING:
a. Depress brake pedal while accelerating the engine to prevent forward surge of vehicle.
b. Inspection should
be carried out while shift lever IS in "D" position on automatic transmission equipped
models.
c. After inspection and adjustment have been made, shift the lever to "N" or "P" position.
Engage parking brake and lock both front and rear wheels with wheel chocks.
Turn
off air conditioner and headlamps.
Keep front wheels straight ahead.
c START I 1
Start engine and warm up untgl water
temperature Indicator poinrs to middle of
I
To harness 4
Stop engine and anach adapter harness between ignmon coil primary winding terminals and harness connector Then set
timer under no-load, then run engine at
+
Stop engine and connect idle UP solenoid
harness connector
Dismnnm adapter harness Connector and
connect ignition
coil harness connector io
(- END
MA-I 4
-

ENGINE MAINTENANCE
Checking Exhi
48,000 krn (30,000 miles) OR 24 MONTHS
SERVICE
Exhaust gas sensor should be checked after 48,000
km (30,000 miles) or 24 months of operation
After vehicle has been operated for
48,000 km
(30,000 miles), exhaust gas sensor warning lamp
will come on to indicate that sensor should
be
inspected
Digital type
t
After inspection, disconnect warning lamp harness
connector so that warning lamp will not come on
thereafter.
SMA792A
1st Gas Sensor
MA-1 5
.-I