1997 NISSAN FRONTIER spark plugs replace

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.
1. Disconnect spark plug cables. Keep
track of the original cable locations.When disconnecting, always hold the
boots Ð not the cables. Mark all cables
to identify their original location.
2. Remove spark plugs with a spark plug
socket.
3. Check each new spark plug gap with a
feeler gauge. Correct it as required.
4. Install spark plugs.
When installing a plug, turn it two or
three turns by hand and then tighten with
a spark plug socket. Be careful not to
overtighten it.Tightening torque:
14 to 22 ft-lb (20 to 29 Nzm)
5. Reconnect the spark plug cables to their
original positions.
ADI0719DI0065
SPARK PLUG REPLACEMENT
7-15
ZX

Schedule 1
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 ý 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 ý 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 beltsI* I*
Air cleaner filter See NOTE (1) [R] [R]
Positive crankcase ventilation (PCV) filter See NOTE (2) [R] [R]
Vapor linesI* I*
Fuel linesI* I*
Fuel filter See NOTE (2)*
Engine coolant See NOTE (3)R*
Engine oilRRRRRRRRRRRRRRRR
Engine oil filterRRRRRRRRRRRRRRRR
Spark plugs[R] [R]
NOTE: (1) If operating mainly in dusty conditions, more frequent maintenance may be required.
(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.
* 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.
8-6
ZX

Schedule 2
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 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
Emission control system maintenance
Drive beltsI* I*
Air cleaner filter[R] [R]
Positive crankcase ventilation (PCV) filter See NOTE (1) [R] [R]
Vapor linesI* I*
Fuel linesI* I*
Fuel filter See NOTE (1)*
Engine coolant See NOTE (2)R*
Engine oilRRRRRRRR
Engine oil filterRRRRRRRR
Spark plugs[R] [R]
NOTE: (1) 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.
(2) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
* 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.
8-8
ZX

EXPLANATION OF
MAINTENANCE ITEMS
Additional information on the following
items with ``*'' is found in the ``Do-it-
yourself operations'' section.
Emission control system
maintenance
Drive belts*Check drive belts for wear,
fraying or cracking and also for proper ten-
sion. Replace the drive belts if found dam-
aged or in accordance with the mainte-
nance schedule.
Air cleaner filterUnder normal driving con-
ditions, the air cleaner filter should be re-
placed in accordance with the maintenance
schedule. However, driving the vehicle in
dusty areas may cause more rapid clogging
of the element. Consequently, the element
may have to be replaced more frequently.
Positive crankcase ventilation (PCV) fil-
terUnder normal driving conditions, the
filter should be replaced in accordance with
the maintenance schedule. If the vehicle is
operated under extremely adverse weather
conditions or in areas where ambient tem-
peratures are either extremely low or ex-tremely high, the filter may become clogged
more rapidly. In such an event, replace the
filter immediately.
Vapor linesCheck vapor lines and connec-
tions for failure or looseness. If leaks are
found, replace the lines.
Fuel lines (hoses, piping, connections,
etc.)Check the fuel hoses, piping and con-
nections for leaks, looseness or deteriora-
tion. Replace any parts if they are damaged.
Fuel filterIf the vehicle is operated under
extremely adverse weather conditions or in
areas where ambient temperatures are ei-
ther extremely low or extremely high, the
filter might become clogged. In such an
event, replace the filter immediately.
Engine coolant*Flush and refill the cooling
system.
Engine oil and oil filter*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*Replace with new plugs hav-
ing the correct heat range.
Chassis and body maintenance
Brake lines and cablesCheck 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 and linings
Check these and the other neighboring
brake components for wear, deterioration
and leaks. Under severe driving conditions,
they may have to be inspected more fre-
quently.
Manual and automatic transmission,
transfer and differential gear oilVisually
inspect for signs of leakage and replace oil
for limited-slip differential. Under severe
driving conditions, the oil should be re-
placed at the specified interval.
Steering gear (box) and linkage, axle and
suspension parts and drive shaft boots
Check for damage, looseness and leakage
of oil or grease. Under severe driving con-
ditions, more frequent inspection should be
performed.
Steering linkage ball joints and front
suspension ball jointsCheck the ball
8-10
ZX