spark plugs NISSAN MAXIMA 1997 A32 / 4.G Owners Manual

Be sure the ignition key is ªOFFº. The
engine could rotate unexpectedly.
1. Visually inspect each belt for signs of un-
usual wear, cuts, fraying, oil adhesion or
looseness. If the belt is in poor condition or
loose, have it replaced or adjusted by your
NISSAN dealer.
2. Have the belts checked regularly for condi-
tion and tension in accordance with the
maintenance schedule in this manual.
Be sure the engine and ignition switch
are off and that the parking brake is
engaged securely.
Be sure to use the correct wrench to
remove the plugs. An incorrect wrench
can cause damage.
SDI0141
DRIVE BELTS SPARK PLUG REPLACEMENT
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Z01.2.1/A32-DX

1. Remove the rocker cover ornament using a
suitable hexagon wrench. (Front side)
2. Disconnect the electrical connectors.
3. Loosen the ignition coil fixing bolts. And
remove the ignition coil to give access to
the spark plugs.
4. Remove the spark plugs with a spark plug
wrench.
The plug wrench has a rubber seal that
holds the spark plug so that it will not fall
when it is pulled out. Make sure that each
spark plug is snugly fitted into the plug
wrench.5. Fit the new plugs, one at a time, into the
spark plug wrench and install them. Turn
each plug in several full turns by hand, then
tighten with a spark plug wrench to the
correct torque. Do not overtighten.
Spark plug tightening torque:
14 to 22 ft-lb
(20 to 29 N×m)6. Holding the ignition coil, re-connect each
ignition coil to its proper spark plug by
pushing it on until you feel a snap.
7. Tighten all ignition coils.
SDI0122SDI0123
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Z01.2.1/A32-DX

Platinum-tipped spark plug
It is not necessary to replace the platinum-
tipped spark plugs as frequently as the con-
ventional type spark plugs since they will last
much longer. Follow the maintenance sched-
ule but, do not reuse them by cleaning or
regapping.
Always replace with recommended
platinum-tipped spark plugs.The filter element should not be cleaned and
reused. Replace it according to the mainte-
nance intervals shown in the ªMaintenance
scheduleº section. When replacing the filter,
wipe the inside of the air cleaner housing and
the cover with a damp cloth.
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 is not there, and the engine
SDI0498SDI0145SDI0121
AIR CLEANER FILTER
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Z01.2.1/A32-DX

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, which-
ever 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 maintenanceDrive belts See NOTE (1)I*
Air cleaner filter See NOTE (2) [R] [R]
Vapor linesI* I*
Fuel linesI* I*
Fuel filter See NOTE (3)*
Engine coolant See NOTE (4)R*
Engine oilRRRRRRRRRRRRRRRR
Engine oil filter (Use part No. 15208-31U00 or equivalent)RRRRRRRRRRRRRRRR
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.
(6) Maintenance items and intervals with ª*º 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.
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Z01.2.1/A32-DX

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 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]
Vapor linesI* I*
Fuel linesI* I*
Fuel filter See NOTE (2)*
Engine coolant See NOTE (3)R*
Engine oilRRRRRRRR
Engine oil filter (Use part No. 15208-31U00 or equivalent)RRRRRRRR
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.
(5) Maintenance items and intervals with ª*º 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.
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Z01.2.1/A32-DX

EXPLANATION OF MAINTENANCE
ITEMS
Additional information on the following
items with ª*º is found in the ªDo-it-
yourself operationsº section.
Emission control system
maintenance
Drive belts*Check drive belts for wear, fray-
ing or cracking and also for proper tension.
Replace the drive belts if found damaged.
Air cleaner filterUnder normal driving condi-
tions, the air cleaner filter should be replaced
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.
Vapor linesCheck vapor lines and connec-
tions for failure or looseness. If leaks are
found, replace them.
Fuel linesCheck the fuel hoses, piping and
connections 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 either
extremely low or extremely high, the filtermight become clogged. In such an event,
replace the filter immediately.
Engine coolant*Drain and flush the cooling
system.
Engine oil & oil filter*Under normal driving
conditions, the engine oil and oil filter should
be replaced in accordance with the mainte-
nance schedule. However, under severe driv-
ing conditions, they may have to be replaced
more frequently.
Spark plugs*Replace with new plugs having
the correct heat range.
Intake & exhaust valve clearanceCheck and
adjust the valve clearance.
Chassis and body maintenance
Brake lines & cablesCheck the brake lines
and hoses (including brake booster vacuum
hoses, connections & check valve) and park-
ing brake cables for proper attachment, leaks,
cracks, chafing, abrasion, deterioration, etc.
Brake pads, discs, drums & liningsCheck
these and the other neighboring brake compo-
nents for wear, deterioration and leaks. Under
severe driving conditions, they may have to be
inspected more frequently.
Manual & automatic transaxle gear oil*Check the oil level and visually inspect for
signs of leakage.
Under severe driving conditions, the oil should
be replaced at the specified interval.
Steering gear & linkage, axle & suspension
parts, and drive shaft bootsCheck for dam-
age, looseness and leakage of oil or grease.
Under severe driving conditions, more fre-
quent inspection should be performed.
Steering linkage ball joints & front suspen-
sion ball jointsCheck the ball joints for dam-
age, looseness and grease leakage.
Exhaust systemVisually check the exhaust
pipes, muffler, and hangers for proper attach-
ment, leaks, cracks, chafing, abrasion, dete-
rioration, etc. Under severe driving conditions,
inspection should be performed more fre-
quently.
Supplemental air bag systemCheck the
supplemental air bag system components for
proper attachment, damage, deformities,
cracks rust, etc. Work around and on the
supplemental air bag system should be done
by an authorized NISSAN dealer.
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Z01.2.1/A32-DX

Model VQ30DE
Type Gasoline, 4-cycle
Cylinder arrangement 6-cylinder, V-slanted at 60É
Bore x Stroke in (mm) 3.66 x 2.886 (93.0 x 73.3)
Displacement cu in (cm
3) 182.33 (2,988)
Firing order 1-2-3-4-5-6*
Idle speed rpm
See the ªEmission Control Labelº
on the underside of the hood. Ignition timing (B.T.D.C.) degree/rpm
CO percentage at idle speed [No air] %
Spark plugStandard PFR5G-11
Service option PFR4G-11, PFR6G-11
Spark plug gap in (mm) Ð
Camshaft operation Timing chain
Alternator belt size
Width x Length in (mm) 0.8409 x 43.11 (21.36 x 1,095)
The spark ignition system of this vehicle
meets all requirements of the Canadian
Interference-Causing Equipment Regula-
tions.
TI1009-A
ENGINE
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Z01.2.1/A32-DX