8 Maintenance and do-it-yourself
Maintenance requirements..........................8-2
General maintenance..............................8-2
Explanation of general maintenance items.........8-2
Maintenance precautions...........................8-5
Engine compartment check locations................8-6
Engine cooling system.............................8-8
Checking engine coolant level...................8-8
Changing engine coolant........................8-9
Engine oil........................................8-11
Checking engine oil level.......................8-11
Changing engine oil...........................8-12
Changing engine oil filter.......................8-13
Automatic transmission fluid.......................8-14
Temperature conditions for checking.............8-15
Power steering fluid...............................8-17
Brake and clutch fluid.............................8-17
Brake fluid....................................8-18
Clutch fluid...................................8-18
Window washer fluid.............................8-19
Window washer fluid reservoir..................8-19
Battery..........................................8-19
Jump starting.................................8-21
Drive belts.......................................8-21
Spark plugs......................................8-22Replacing spark plugs.........................8-22
Air cleaner.......................................8-23
In-cabin Microfilter (if so equipped)..............8-24
Windshield wiper blades..........................8-27
Cleaning.....................................8-27
Replacing....................................8-27
Parking brake and brake pedal.....................8-28
Checking parking brake........................8-28
Checking brake pedal..........................8-28
Brake booster.................................8-29
Fuses...........................................8-30
Engine compartment...........................8-30
Passenger compartment.......................8-31
Battery replacement..............................8-32
Lights...........................................8-34
Headlights....................................8-34
Fog lights (if so equipped)......................8-35
Exterior and interior lights.......................8-36
Wheels and tires.................................8-39
Tire pressure..................................8-39
Tire labeling...................................8-42
Types of tires..................................8-45
Tire chains....................................8-45
Changing wheels and tires.....................8-46
ZREVIEW COPY:Ð2004 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
03/18/04Ðtbrooks
X
1. Power steering fluid pump
2. Water pump
3. Generator
4. A/C compressor (if so equipped)
5. Crankshaft
6. Auto tensioner
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
It is not necessary to replace platinum-tipped
spark plugs as frequently as conventional type
spark plugs because they last much longer. Fol-
low the maintenance schedule, but do not reuse
the spark plugs by cleaning or regapping.
cAlways replace spark plugs with rec-
ommended or equivalent ones.
1. Remove the engine cover (QR25DE en-
gine) .
2. Disconnect the ignition coil connectors. Re-
move the ignition coil bolts.
QR25DE engine
WDI0225WDI0005
SPARK PLUGS
8-22Maintenance and do-it-yourself
ZREVIEW COPY:Ð2004 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
03/18/04Ðtbrooks
X
3. Disconnect the ignition coils from the spark
plugs.
4. Remove the spark plugs with a spark plug
socket.
The plug socket has a rubber seal that holds
the spark plug so it does not fall when it is
pulled out. Make sure each spark plug is
snugly fitted into the spark plug socket.
5. Fit the new plugs, one at a time, into the
spark plug socket and install them.Use
only the specified spark plugs.Turn
each plug several full turns by hand, then
tighten with the spark plug socket to the
correct torque. Do not overtighten.
Spark plug tightening torque:
14 - 22 ft-lb (20 - 29 N·m)
6. Holding the boot, reconnect each high ten-
sion cable/ignition coil to its proper spark
plug by pushing it on until you feel a snap.
7. Install the ignition coil bolts.
Ignition coil bolt tightening torque:
33 - 44 in-lb (3.8 - 5.0 N·m)
Connect the ignition coil connector.
8. Install the engine cover (GR25DE engine) .The air cleaner filter should not be cleaned and
reused. Replace it according to the maintenance
intervals shown in the “NISSAN Service and
Maintenance Guide.” When replacing the filter,
wipe the inside of the air cleaner filter housing
and the cover with a damp cloth.WARNING
cOperating the engine with the air
cleaner removed can cause you or oth-
ers 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.
cNever pour fuel into the throttle body or
attempt to start the engine with the air
cleaner removed. Doing so could result
in serious injury.
ADI0631
AIR CLEANER
Maintenance and do-it-yourself8-23
ZREVIEW COPY:Ð2004 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
03/18/04Ðtbrooks
X
