1999 NISSAN ALTIMA spark plugs replace

2. Check the fluid level in each cell.
If it is necessary to add fluid, add only
distilled water to bring the level up to the
OK level indicator in each filler opening.
Do not overfill.
JUMP STARTING
If jump starting is necessary, see the ``In
case of emergency'' section of this owner's
manual. If the engine does not start by jump
starting, the battery may have to be re-
placed. Contact an authorized NISSAN
dealer.
WARNING
Be sure the ignition key is OFF. The
engine could rotate unexpectedly.
1. Visually inspect each belt for signs of
unusual wear, cuts, fraying or looseness.
If the belt is in poor condition or is loose,
have it replaced or adjusted by an autho-
rized NISSAN dealer.
2. Have the belts checked regularly for con-
dition and tension in accordance with the
maintenance schedule found in the
``Maintenance'' section of this manual.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
remove the spark plugs. An incorrect
socket can damage the spark plugs.
DI1310ADI0533DI1229M
DRIVE BELTS SPARK PLUG REPLACEMENT
8-14Do-it-yourself
ZX

Platinum-tipped spark plug
It is not necessary to replace platinum-
tipped spark plugs as frequently as conven-
tional type spark plugs because they last
much longer. Follow 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 brackets as necessary to give
access to the high tension spark plug
cables and spark plugs.2. Disconnect the spark plug cables from
the spark plugs.
When disconnecting, always hold the
boots, not the cables. Mark all cables to
identify their original locations.
3. 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.
4. 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 to 22 ft-lb
(20 to 29 Nzm)
5. Holding the boot, reconnect each high
tension cable to its proper spark plug by
pushing it on until you feel a snap.
6. Reinstall all brackets as necessary.The air cleaner filter should not be cleaned
and reused. Replace it according to the
maintenance intervals shown in the ``Main-
tenance'' section of this manual. When re-
placing the filter, wipe the inside of the air
cleaner filter housing and the cover with a
damp cloth.
ADI1099DI1312
AIR CLEANER HOUSING
FILTER
Do-it-yourself8-15
ZX

Schedule One
Abbreviations: R = Replace I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Perform at number of miles,
kilometers or months,
whichever comes first.Miles x 1,000 3.75 7.5 11.25 15 18.75 22.5 26.25 30 33.75 37.5 41.25 45 48.75 52.5 56.25 60
(km x 1,000) (6) (12) (18) (24) (30) (36) (42) (48) (54) (60) (66) (72) (78) (84) (90) (96)
Months 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Emission control system maintenance
Drive belts See NOTE (1)I*
Air cleaner filter See NOTE (2) [R] [R]
EVAP vapor linesI* I*
Fuel linesI* I*
Fuel filter See NOTE (3)*
Engine coolant See NOTE (4)R*
Engine oilRRRRRRRRRRRRRRRR
Engine oil filterRRRRRRRRRRRRRRRR
Spark plugs (Use PLATINUM-TIPPED type)[R]
Intake & exhaust valve clearance See NOTE (5)*
NOTE: (1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months.
(2) If operating mainly in dusty conditions, more frequent maintenance may be required.
(3) If vehicle is operated under extremely adverse weather conditions or in areas where ambient temperatures are either
extremely low or extremely high, the filters might become clogged. In such an event, replace them immediately.
(4) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(5) If valve noise increases, inspect valve clearance.
* Maintenance items and intervals marked with an ``*'' 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.
9-6Maintenance
ZX

Schedule Two
Abbreviations: R = Replace I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Perform at number of miles, kilometers or
months, whichever comes first.Miles x 1,000 7.5 15 22.5 30 37.5 45 52.5 60
(km x 1,000) (12) (24) (36) (48) (60) (72) (84) (96)
Months 6 12 18 24 30 36 42 48
Emission control system maintenance
Drive belts See NOTE (1)I*
Air cleaner filter[R] [R]
EVAP vapor linesI* I*
Fuel linesI* I*
Fuel filter See NOTE (2)*
Engine coolant See NOTE (3)R*
Engine oilRRRRRRRR
Engine oil filterRRRRRRRR
Spark plugs (Use PLATINUM-TIPPED type)[R]
Intake & exhaust valve clearance See NOTE (4)*
NOTE: (1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months.
(2) If vehicle is operated under extremely adverse weather conditions or in areas where ambient temperatures are either
extremely low or extremely high, the filters might become clogged. In such an event, replace them immediately.
(3) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(4) If valve noise increases, inspect valve clearance.
* Maintenance items and intervals marked with an ``*'' 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.
9-8Maintenance
ZX

Additional information on the following
items marked with an ``*'' is found in the
``Do-it- yourself'' section of this manual.
Emission control system
maintenance
Drive belts*Ð Check drive belts for wear,
fraying or cracking and also for proper ten-
sion. Replace any damaged drive belts.
Air cleaner filterÐ Under normal driving
conditions, the air cleaner filter should be
replaced in accordance with the mainte-
nance schedule. However, driving the ve-
hicle in dusty areas may cause rapid clog-
ging of the element. Consequently, the
element may have to be replaced more
frequently.
Evap vapor linesÐ Check vapor lines and
connections for leaks, looseness or deterio-
ration. If leaks are found, replace them.
Fuel linesÐ Check the fuel hoses, piping
and connections for leaks, looseness or
deterioration. Replace any damaged parts.
Fuel filterÐ If the vehicle is operated under
extremely adverse weather conditions or in
areas where ambient temperatures are ei-
ther extremely low or extremely high, thefilter might become clogged. In such an
event, replace the filter immediately.
Engine coolant*Ð Drain and flush the
cooling system.
Engine oil & oil filter*Ð Under normal
driving conditions, the engine oil and oil filter
should be replaced in accordance with the
maintenance schedule. However, under se-
vere driving conditions, they may have to be
replaced more frequently.
Spark plugs*Ð Replace with new plugs
having the correct heat range.
Intake & exhaust valve clearanceÐ Check
the valve clearance if valve noise increases.
Chassis and body maintenance
Brake lines & cablesÐ Check the brake
lines and hoses (including brake booster
vacuum hoses, connections & check valve)
and parking brake cables for proper attach-
ment, leaks, cracks, chafing, abrasion, de-
terioration, etc.
Brake pads, rotors, drums & liningsÐ
Check these and the other neighboring brake
components for wear, deterioration and
leaks. Under severe driving conditions, they
may have to be inspected more frequently.
Manual & automatic transmission fluid*
Ð Check the fluid level and visually inspect
for signs of leakage.
Under severe driving conditions, the fluid
should be replaced at the specified interval.
Steering gear & linkage, axle & suspen-
sion parts, and drive shaft bootsÐ
Check for damage, looseness and leakage
of oil or grease. Under severe driving con-
ditions, inspection should be performed
more frequently.
Exhaust systemÐ Visually check the ex-
haust pipes, muffler, and hangers for proper
attachment, leaks, cracks, chafing, abra-
sion, deterioration, etc. Under severe driv-
ing conditions, inspection should be per-
formed more frequently.
Supplemental air bag systemÐ Check
the supplemental air bag system compo-
nents for proper attachment, damage, de-
formities, cracks, rust, etc. Work around and
on the supplemental air bag system should
be done by an authorized NISSAN dealer.
EXPLANATION OF
MAINTENANCE ITEMS
9-10Maintenance
ZX