2019 NISSAN SENTRA spark plugs replace

8 Do-it-yourself
Maintenance precautions.......................8-2
Engine compartment check locations ...........8-3
Engine cooling system ..........................8-5
Checking engine coolant level ................8-6
Changing engine coolant .....................8-7
Engine oil ........................................8-7
Checking engine oil level .....................8-7
Changing engine oil ..........................8-8
Changing engine oil filter ....................8-10
Continuously Variable Transmission (CVT)
fluid (if so equipped) ............................. 8-11
Brake and clutch (if so equipped) fluid ..........8-12
Brake fluid ................................... 8-12
Clutch (if so equipped) fluid ..................8-12
Windshield-washer fluid ........................8-13
Windshield-washer fluid reservoir ............8-13
Battery......................................... 8-14
Jump starting ............................... 8-15
Variable voltage control system ................8-16
Drive belt ....................................... 8-16
Spark plugs .................................... 8-17
Replacing spark plugs ....................... 8-17
Air cleaner ...................................... 8-18In-cabin microfilter
.......................... 8-19
Windshield wiper blades ........................8-19
Cleaning .................................... 8-19
Replacing ................................... 8-19
Brakes.......................................... 8-21
Fuses ........................................... 8-22
Engine compartment .......................8-22
Passenger compartment ....................8-24
Battery replacement ........................... 8-25
Key fob (if so equipped) ......................8-26
NISSAN Intelligent Key® (if so equipped) ......8-27
Lights .......................................... 8-29
Headlights ................................... 8-29
Turn signal bulb ............................. 8-30
Fog lights (if so equipped) ...................8-30
Ex

terior and interior lights ...................8-32
Wheels and tires ................................ 8-34
Tire pressure ................................ 8-34
Tire labeling ................................. 8-38
Types of tires ................................ 8-40
Tire chains .................................. 8-41
Changing wheels and tires ..................8-42

1. Visually inspect the belt for signs of un-usual wear, cuts, or fraying. If the belt is
in poor condition, have it replaced or
adjusted. It is recommended that you
visit a NISSAN dealer for this service.
2. Have the belt checked regularly for condition.
REPLACING SPARK PLUGS
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.
Platinum-tipped spark plugs
(except California models)
It is not necessary to replace platinum-
tipped
Aspark 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
platinum-tipped spark plugs by cleaning or
regapping.
∙ Always replace spark plugs with rec-
ommended or equivalent ones.
If replacement is required, it is recom-
mended that you visit a NISSAN dealer for
this service.
Iridium-tipped spark plugs
(MR16DDT engine or California
models only)
It is not necessary to replace iridium-
tipped
Aspark 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 in the manual. Do not service
iridium-tipped spark plugs by cleaning or
regapping.
SDI1895
SPARK PLUGS
Do-it-yourself8-17

∙Always replace spark plugs with rec-
ommended or equivalent ones.
If replacement is required, it is recom-
mended that you visit a NISSAN dealer for
this service.
The air cleaner filter should not be cleaned
and reused. Replace it according to the
maintenance log shown in the “Mainte-
nance and schedules” section of this
manual.
To remove the air cleaner filter:1. Unlatch the retaining clips
A.
2. Pull up at points
Band remove.
3. Pull up and remove air cleaner housing
C. 4. Remove the air cleaner filter. Wipe the
inside of the air cleaner filter housing
and the cover with a damp cloth, then
replace air cleaner filter.
NOTE:
Af ter installing a new air cleaner, make
sure the air cleaner cover is seated in the
housing and latch the clips.
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 careful
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.
LDI2171
AIR CLEANER
8-18Do-it-yourself

or equivalent with the proper mixture. (For
additional information on the proper mix-
ture for your area, refer to “Engine cooling
system” in the “Do-it-yourself ” section of
this manual.)
NOTE: Mixing any other type of coolant
or the use of non-distilled water may re-
duce the recommended service interval
of the coolant.
Engine oil and oil filter:Replace engine oil
and oil filter at the specified intervals. For
recommended oil grade and viscosity refer
to “Recommended fluids/lubricants and
capacities” in the “Technical and consumer
information” section of this manual.
Engine valve clearance*: Inspect only if
valve noise increases. Adjust valve clear-
ance if necessary.
Evaporative emissions control vapor
lines*: Check vapor lines for leaks or loose-
ness. Tighten connections or replace parts
as necessary.
Fuel filter: Periodic maintenance is not re-
quired. (in-tank type filter)
Fuel lines*: Check the fuel hoses, piping
and connections for leaks, looseness, or
deterioration. Tighten connections or re-
place parts as necessary. Spark plugs:
Replace at specified intervals.
Install new plugs of the type as originally
equipped.
CHASSIS AND BODY
MAINTENANCE:
Brake lines and cables: Visually inspect for
proper installation. Check for chafing,
cracks, deterioration, and signs of leaking.
Replace any deteriorated or damaged
parts immediately.
Brake pads, rotors, drums and linings:
Check for wear, deterioration and fluid
leaks. Replace any deteriorated or dam-
aged parts immediately.
Exhaust system: Visually inspect the ex-
haust pipes, muffler and hangers for leaks,
cracks, deterioration, and damage. Tighten
connections or replace parts as necessary.
In-cabin microfilter: Replace at specified
intervals. When driving for prolonged peri-
ods in dusty conditions, replace the filter
more frequently.
Steering gear and linkage, axle and sus-
pension parts, drive shaf t boots: Check
for damage, looseness, and leakage of oil
or grease. Under severe driving conditions,
inspect more frequently. Tire rotation:
Tires should be rotated every
5,000 miles (8,000 km) according to the in-
structions under “General maintenance” in
this section. When rotating tires, check for
damage and uneven wear. Replace if nec-
essary.
Transmission fluid/oil: Visually inspect for
signs of leakage at specified intervals. If
using a car-top carrier, or driving on rough
or muddy roads:
∙ Replace the manual transaxle gear oil every 20,000 miles or 24 months.
∙ Replace the CVT fluid every 60,000 miles (96,000 km) or request the dealer to in-
spect the fluid deterioration data using
a CONSULT. If the deterioration data is
more than 210000, replace the CVT fluid.
9-6Maintenance and schedules

The following tables show the standard
maintenance schedule. Depending upon
weather and atmospheric conditions,varying road surfaces, individual driving
habits and vehicle usage, additional or
more frequent maintenance may be re-quired.
Af ter 120,000 miles (192,000 km)/
144 months, continue maintenance at
the same mileage/time interval.
EMISSION CONTROL SYSTEM MAINTENANCE
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace
MAINTENANCE OPERATION
Perform at number of miles, kilometers or months, whichever comes first. miles x 1,000
(km x 1,000) Months MAINTENANCE INTERVAL
5
(8) 6 10
(16) 12 15
(24) 18 20
(32) 24 25
(40) 30 30
(48) 36 35
(56) 42 40
(64) 48 45
(72) 54 50
(80) 60 55
(88) 66 60
(96) 72
Drive belt See NOTE (1) I*I*I*
Air cleaner filter See NOTE (2) RR
EVAP vapor lines I*I*I*
Fuel lines I*I*I*
Fuel filter See NOTE (3)
Engine coolant* See NOTE (4)(5)
Engine oil RRRRRRRRRRRR
Engine oil filter RRRRRRRRRRRR
Spark plugs (Iridium/Platinum - tipped type)See NOTE (6)Replace every 105,000 miles (168,000 km)
Intake and exhaust valve clearances See NOTE (7)
MAINTENANCE OPERATION
Perform at number of miles, kilometers or months, whichever comes first. miles x 1,000
(km x 1,000) Months MAINTENANCE INTERVAL
65
(104) 78 70
(112) 84 75
(120) 90 80
(128) 96 85
(136) 102 90
(144) 108 95
(152) 114 100
(160) 120 105
(168) 126 110
(176) 132 115
(184) 138 120
(192) 144
Drive belt See NOTE (1)I*I*I*I*I*I*
Air cleaner filter See NOTE (2) RR
EVAP vapor lines I*I*I*
Fuel lines I*I*I*
STANDARD MAINTENANCE
9-8Maintenance and schedules

MAINTENANCE OPERATION
Perform at number of miles, kilometers or months, whichever comes first. miles x 1,000
(km x 1,000) Months MAINTENANCE INTERVAL
65
(104) 78 70
(112) 84 75
(120) 90 80
(128) 96 85
(136) 102 90
(144) 108 95
(152) 114 100
(160) 120 105
(168) 126 110
(176) 132 115
(184) 138 120
(192) 144
Fuel filter See NOTE (3)
Engine coolant* See NOTE (4)(5)
Engine oil RRRRRRRRRRRR
Engine oil filter RRRRRRRRRRRR
Spark plugs (Iridium/Platinum - tipped type)See NOTE (6)Replace every 105,000 miles (168,000 km)
Intake and exhaust valve clearances See NOTE (7)
NOTE:
(1) Af ter 40,000 miles (64,000 km) or 48 months, inspect every 10,000 miles (16,000 km) or 12 months. Replace the drive belt if
found damaged.
(2) If operating mainly in dusty conditions, more frequent maintenance may be required.
(3) Periodic maintenance is not required.
(4) 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.
(5) 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 expectancy
of the factory fill coolant.
(6) For MRA8DE:
Replace spark plug when the plug gap exceeds 0.053 in (1.35 mm) even within specified periodic replacement mileage.
For MR16DDT:
Replace spark plug when the plug gap exceeds 0.045 in (1.15 mm) even within specified periodic replacement mileage.
(7) Periodic maintenance is not required. However, if valve noise increased, inspect valve clearance.
* Maintenance items and intervals with “*” are recommended by NISSAN for reliable vehicle operation. The owner need not perform
such maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and
intervals are required.
Maintenance and schedules9-9

RecordersEventData.................10-22
Refrigerant recommendation ........10-8
Registering a vehicle in another
country .....................10-11
Remote keyless entry system ........3-8
Reporting safety defects (US only) . . . .10-20
S
Safety Child safety rear door lock ........3-7
Childseatbelts .....1-23, 1-29, 1-35, 1-40
Reporting safety defects (US only) . .10-20
Seat adjustment Front manual seat adjustment ......1-3
Front power seat adjustment ......1-5
Rear seat adjustment ...........1-6
Seatback pockets ...............2-50
Seat belt Childsafety................ .1-20
Infants and small children ........1-21
InjuredPerson............... .1-15
Largerchildren.............. .1-21
Precautions on seat belt usage .....1-12
Pregnant women ..............1-15
Seat belt extenders ............1-19
Seat belt maintenance ..........1-20
Seatbelts................1-12, 7-7
Shoulder belt height adjustment . . . .1-19
Three-pointtypewithretractor.....1-15
Seat belt extenders ..............1-19
Seatbeltwarninglight.........1-15, 2-19
Seats Adjustment ..................1-2 Armrests ...................1-7
Frontseats..................1-2
Heatedseats................2-46
Manual front seat adjustment
......1-3
Rearseat.................. .1-6
Security indicator light ............2-22
Security system
(NISSAN Vehicle Immobilizer System),
engine start.............2-37,5-10,5-14
Security systems Vehicle security system ......2-35,2-35
Self-adjustingbrakes.............8-21
Service manual order form .........10-22
Servicing air conditioner ...........4-31
Shif ting Continuously Variable Transmission
(CVT) .....................5-18
Manual transmission ...........5-23
Shiftlockrelease................5-21
Shoulder belt height adjustment ......1-19
Side air bag system (See supplemental
side air bag and curtain side-impact
airbagsystem)................ .1-58
Siri® Eyes-Free .................4-51
Spark plug replacement ...........8-17
Spark plugs ...................
8-17
Specifications ..................10-9
Speedometer ................2-4,2-5
SPORT mode switch .............5-26
Spotlights(Seemaplight)..........2-60
SRS warning label ...............1-61
Stability control .................5-74
Standard maintenance ............9-8
Starting Before starting the engine ........5-14
Jumpstarting.............6-9,8-15 Precautions when starting and
driving
.....................5-2
Push starting ................6-11
Starting the engine ............5-14
Starting the engine ..............5-14
Starting the engine (models with NISSAN
Intelligent Key® system) ...........5-16
Steering Power steering system ..........5-71
Steering wheel .................3-30
Steering wheel audio control switch . . .4-49
Stoplight....................8-32
Storage.....................2-49
Storagetray...................2-51
Sunglasses case ................2-53
Sunglasses holder ...............2-53
Sunroof ..................2-58, 2-58
Sunvisors....................3-30
Supplemental air bag warning labels . . .1-61
Supplemental air bag warning
light.................... .1-62, 2-19
Supplemental front impact air bag
system..................... .1-50
Supplemental restraint system Information and warning labels .....1-61
Precautions on supplemental
restraintsystem..............1-43
Supplemental restraint system
(Supplemental air bag system) .......1-43
Supplemental side and curtain
side-impact air bag system .........1-58
Switch Autolightswitch..............2-41
Automatic power window switch . . .2-56
Foglightswitch..............2-45
Hazard warning flasher switch ......6-2
11-6