1998 NISSAN SENTRA boot

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 plugs. An incorrect socket
can cause damage.
GA16DE Engine
1. Remove brackets as necessary to give
access to the high tension 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 spark 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. On conventional spark plugs, check the
gap on each new spark plug with a
feeler gauge. (The spark plug gap is
shown in the ``Technical and consumer
information'' section of this manual.) Ad-
just the gap as required.
DI1229MDI1017M
SPARK PLUG REPLACEMENT
8-18Do-it-yourself
ZX

5. Fit the new plugs, one at a time, into the
spark plug socket and install them. Turn
each plug in 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)
6. Holding the boot, reconnect each high
tension cable to its proper spark plug by
pushing it on until you feel a snap.
7. Reinstall all brackets as necessary.
SR20DE Engine
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. Blue rings on the
ceramic portion indicate that the plugs are
platinum-tipped.
cAlways replace spark plugs with rec-
ommended or equivalent ones.
The air cleaner filter should not be cleaned
and reused. Replace it according to the
maintenance intervals shown in the ``Mainte-
nance'' section of this manual. When replac-
ing the filter, wipe the inside of the air cleaner
housing and the cover with a damp cloth.
WARNING
Operating the engine with the air cleaner
off can cause you or others to be
burned. The air cleaner not only cleans
the air, it stops flame if the engine back-
fires. If it isn't in place, and the engine
backfires, you could be burned. Do not
drive with it off, and be careful working
on the engine with the air cleaner off.
DI0205ADI0631
AIR CLEANER HOUSING
FILTER
Do-it-yourself8-19
ZX

Abbreviations: I = Inspect. Correct or replace if necessary.
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Perform at number of miles,
kilometers or months, whichever
comes first.Miles ý 1,000 7.5 15 22.5 30 37.5 45 52.5 60
(km ý 1,000) (12) (24) (36) (48) (60) (72) (84) (96)
Months 6 12 18 24 30 36 42 48
Chassis and body maintenance
Brake lines & cablesIIII
Brake pads, rotors, drums & liningsIIIIIIII
Manual transaxle gear oil & automatic transaxle fluid See NOTE (1).IIII
Steering gear & linkage, axle & suspension partsIIIIIIII
Exhaust systemIIIIIIII
Drive shaft bootsIIIIIIII
Supplemental air bag system See NOTE (2)*.
NOTE: (1) If towing a trailer, using a camper or a car-top carrier, or driving on rough or muddy roads, change (not just inspect) oil at every 30,000
miles (48,000 km) or 24 months.
*(2) Inspect the supplemental air bag system 10 years after the date of manufacture noted on the F.M.V.S.S. certification label.
Maintenance9-7
ZX

Abbreviations: I = Inspect. Correct or replace if necessary.
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Perform at number of miles, kilome-
ters or months, whichever comes
first.Miles ý 1,000
(km ý 1,000)
Months7.5
(12)
615
(24)
1222.5
(36)
1830
(48)
2437.5
(60)
3045
(72)
3652.5
(84)
4260
(96)
48
Chassis and body maintenance
Brake lines & cablesIIII
Brake pads, discs, drums & liningsIIII
Manual transaxle gear oil & automatic transaxle fluidIIII
Steering gear & linkage, axle & suspension parts I I
Exhaust systemII
Drive shaft bootsIIII
Supplemental air bag system See NOTE (1)*.
NOTE: *(1) Inspect the supplemental air bag system 10 years after the date of manufacture noted on the F.M.V.S.S. certification label.
Maintenance9-9
ZX

Additional information on the following
items with an ``*'' is found in the ``Do-it-
yourself'' section of this manual.
Emission control system
maintenance
Drive belts* ÐCheck drive belts for wear,
fraying or cracking and also for proper tension.
Replace any damaged drive belts.
Air cleaner filter ÐUnder normal driving
conditions, the air cleaner filter should be
replaced in accordance with the maintenance
schedule. However, driving the vehicle in
dusty areas may cause rapid clogging of the
element. Consequently, the element may
have to be replaced more frequently.
EVAP vapor lines ÐCheck vapor lines
and connections for leaks, looseness or
deterioration. If leaks are found, replace
them.
Fuel lines ÐCheck the fuel hoses, piping
and connections for leaks, looseness or
deterioration. Replace any damaged parts.
Fuel filter ÐIf 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* ÐDrain and flush the
cooling system.
Engine oil & oil filter* ÐUnder 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* ÐReplace with new plugs
having the correct heat range.
Intake & exhaust valve clearance Ð
Check and adjust the valve clearance.
Chassis and body maintenance
Brake lines & cables ÐCheck 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, discs, drums & linings Ð
Check these and the other brake compo-
nents for wear, deterioration and leaks. Un-
der severe driving conditions, they may have
to be inspected more frequently.
Manual & automatic transmission fluid*
ÐCheck 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 boots Ð
Check for damage, looseness and leakage
of oil or grease. Under severe driving con-
ditions, inspection should be performed
more frequently.
Exhaust system ÐVisually check the ex-
haust pipes, muffler, and hangers for proper
attachment, leaks, cracks, chafing, abra-
sion, deterioration, etc. Under severe
driving conditions, inspection should be per-
formed more frequently.
Supplemental air bag system ÐCheck
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