2023 NISSAN TITAN spark plugs replace

8 Do-it-yourself
Maintenance precautions.......................8-2
Engine compartment check locations ...........8-4
Engine cooling system ..........................8-6
Checking engine coolant level ................8-7
Changing engine coolant ....................8-7
Engine oil .......................................8-8
Checking engine oil level .....................8-8
Changing engine oil and oil filter ..............8-8
Automatic Transmission Fluid (ATF) .............8-14
Power Steering Fluid (PSF) ......................8-14
Brake fluid ...................................... 8-15
Windshield-washer fluid ........................8-16
Windshield-washer fluid reservoir ...........8-16
Battery......................................... 8-17
Jump starting ............................... 8-20
Variable voltage control system ................8-20
Drive belt ....................................... 8-21
Spark plugs .................................... 8-21
Replacing spark plugs ....................... 8-21
Air cleaner ..................................... 8-22In-cabin microfilter
.......................... 8-22
Windshield wiper blades ........................8-23
Cleaning .................................... 8-23
Replacing ................................... 8-23
Brakes ......................................... 8-24
Fuses .......................................... 8-25
Engine compartment .......................8-25
Passenger compartment ...................8-27
Battery replacement ........................... 8-28
NISSAN Intelligent Key® ......................8-28
Lights .......................................... 8-30
Headlights .................................. 8-30
Fog lights (if so equipped) ...................8-31
Exterior and interior lights ...................8-31
Wheels and tires ............................... 8-34
Tire pressure ................................ 8-34
Tire labeling ................................. 8-38
Types of tires ................................ 8-42
Tir
e chains .................................. 8-43
Changing wheels and tires ..................8-44

1. Power steering fluid pump pulley
2. Automatic belt tensioner pulley
3. Water pump pulley
4. Cooling fan pulley
5. Air conditioner compressor pulley
6. Crankshaf t pulley
7. Generator pulley
WARNING
Be sure the ignition switch is in the OFF
or LOCK position before servicing drive
belt. The engine could rotate
unexpectedly. 1. Visually inspect the belt for signs of un-
usual wear, cuts, fraying or looseness. If
the belt is in poor condition or is loose,
have it replaced or adjusted. It is recom-
mended that you visit a NISSAN dealer
for this service.
2. Have the belt checked regularly for con- dition and tension in accordance with
the maintenance schedule. For addi-
tional information, see the "Mainte-
nance and schedules" section of this
manual.
REPLACING SPARK PLUGS
Iridium-tipped spark plugs
It is not necessary to replace iridium-
tipped spark plugs as frequently as con-
ventional type spark plugs because they
last much longer. Follow the maintenance
log shown in the “Maintenance and sched-
ules” section of this manual. Do not service
iridium-tipped spark plugs by cleaning or
regapping.
•Always replace spark plugs with rec-
ommended or equivalent ones.
WDI0661
5.6L 8 cylinder (VK56VD engine model)
LDI2972
DRIVE BELT SPARK PLUGS
Do-it-yourself8-21

WARNING
Be sure the engine and ignition switch
are off and that the parking brake is
engaged securely.
CAUTION
Be sure to use the correct socket to re-
move the spark plugs. An incorrect
socket can damage the spark plugs.
If replacement is required, it is recom-
mended that you visit a NISSAN dealer for
this service.
WARNING
• Operating the engine with the air
cleaner removed can cause you or
others to be burned. The air cleaner
not only cleans the air, it stops the
flame if the engine backfires. If it isn't
there, and the engine backfires, you
could be burned. Do not drive with
the air cleaner removed, and be care-
ful when working on the engine with
the air cleaner removed. •
Never pour fuel into the throttle body
or attempt to start the engine with
the air cleaner removed. Doing so
could result in serious injury.
To remove the filter from the air cleaner,
push the tabs and pull the cover upward.
The viscous paper type filter element
should not be cleaned and reused. Replace
the air filter according to the maintenance
log shown in the “Maintenance and sched-
ules” section of this manual.
When replacing the air filter, wipe the inside
of the air cleaner housing and the cover
with a damp cloth.NOTE:
Af ter installing a new air cleaner filter,
make sure the air cleaner cover is seated
in the housing and latch the tabs.
IN-CABIN MICROFILTER
The in-cabin microfilter restricts the entry
of airborne dust and pollen particles and
reduces some objectionable outside
odors. The filter is located behind the glove
box. For additional information on change
intervals, see “Maintenance schedules"
(P. 9-7).
LDI2960
5.6L 8 cylinder (VK56VD engine model)
AIR CLEANER
8-22Do-it-yourself

Essentials:
• Replace engine oil & filter
• Replace brake fluid
• Replace differential gear oil
• Lubricate steering stopper cap (XD mod-els only)
• Replace transfer case oil (4WD models)105,000 miles/(168,000 km)/
84 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Automatic transmission fluid (1)
• Brake lines and cables
• Brake pads and rotors
• Engine drive belt *
• Propeller shaf t
• Differential gear oil
• Transfer case oil (4WD models)
• Drive shaf t boots (4WD models)
• Horn, lights, signals, wipers, rear hatch/ hood lif t supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth Essentials:
• Replace engine coolant * (2)
• Replace engine oil & filter
• Replace in-cabin microfilter
• Replace spark plugs
• Tire rotation
Severe use maintenance:
Not Applicable. Proceed to next interval
(1) Request the dealer to inspect the fluid
deterioration data using a CONSULT. If the
deterioration data is more than 77000, re-
place the AT fluid.
(2) First replacement interval is 105,000
miles (168,000 km) or 84 months. Af ter first
replacement, replace every 75,000 miles
(120,000 km) or 60 months.
Engine Coolant service note. “Use only
Genuine NISSAN Long Life Antifreeze/
Coolant (blue) or equivalent with proper
mixture ratio of 50% antifreeze and 50%
demineralized or distilled water. Mixing any
other type of coolant or the use of non-
distilled water may reduce the life expec-
tancy of the factory fill coolant.”
* Maintenance items and intervals with “*”
are recommended by NISSAN for reliable
9-28Maintenance and schedules

Registering a vehicle in another
country.....................10-15Remote Engine Start..........3-22,5-17Reporting safety defects (US only). . . .10-56
S
Safety
Child safety rear door lock.........3-9Child seat belts. .1-26, 1-33, 1-39, 1-43, 1-48Reporting safety defects (US only). .10-56SeatMemory seat.............3-41, 3-43Seat adjustmentFront manual seat adjustment......1-4Front power seat adjustment.......1-5Seat beltChild safety.................1-23Infants and small children........1-24Injured person................1-18Larger children...............1-24Precautions on seat belt usage.....1-15Pregnant women..............1-18Rear center seat belt...........1-22Seat belt extenders............1-22Seat belt maintenance..........1-23Seat belts................1-15,7-6Shoulder belt height adjustment. . . .1-22Three-point type with retractor.....1-19Seat belt extenders..............1-22Seat belt warning light.........1-18,2-18Seatback pockets...............2-73
SeatsAdjustment..................1-2Front seats..................1-2Heated seats................2-55Manual front seat adjustment......1-4Rear seat.................. .1-4Security indicator light............2-18Security system (NISSAN Vehicle Immobilizer
System), engine start.........2-41, 5-16Security systems
Vehicle security system.........2-40Self-adjusting brakes.............8-24Service manual order form........10-58Servicing air conditioner...........4-42Shif tingAutomatic transmission.........5-20Shoulder belt height adjustment......1-22Side air bag system (See supplemental side
air bag, curtain and rollover air bag
systems)
.....................1-78Snow plow................. .10-54Spark plug replacement...........8-21Spark plugs...................8-21Specifications.................10-9Speedometer..................2-7Speedometer and odometer........2-6SRS warning label...............1-82Stability control................5-117Standard maintenance............9-8Starting
Before starting the engine........5-16Jump starting............6-10,8-20Precautions when starting and
driving................. .5-4, 5-10
Push starting................6-12Starting the engine............5-16Starting the engine..............5-16Steering
Power steering fluid............8-14Power steering system.........5-113Steering wheel.................3-28Stop light................... .8-31Storage.....................2-72Storage tray..................2-76Sun visors....................3-30Sunglasses case................2-78Sunglasses holder..............2-78Sunroof..................2-88, 7-5Supplemental air bag warning labels. . .1-82Supplemental air bag warning
light................... .1-83, 2-18Supplemental front impact air bag
system..................1-59, 1-75Supplemental restraint system
Information and warning labels.....1-82Precautions on supplemental restraint
system................ .1-52, 1-67Supplemental restraint system
(Supplemental air bag system).......1-52Switch
Autolight switch..............2-46Automatic power window switch. . .2-86Electronic locking rear differential (E-Lock)
system switch...............2-61Fog light switch..............2-52Hazard warning flasher switch......6-2Headlight aiming control.........2-50Headlight and turn signal switch. . . .2-45
11-6