1999 NISSAN SENTRA ignition

of at least 87 AKI (Anti-Knock Index). How-
ever, you may use unleaded gasoline with
an octane rating as low as 85 AKI (Anti-
Knock Index) in high altitude areas (over
4,000 ft [1,219 m]) such as: Colorado, Mon-
tana, New Mexico, Utah, Wyoming, north-
eastern Nevada, southern Idaho, western
South Dakota, western Nebraska, and the
part of Texas which is directly south of New
Mexico.
Using unleaded gasoline with an octane
rating lower than stated above can cause
persistent, heavy ``spark knock.'' (``Spark
knock'' is a metallic rapping noise.) If
severe, this can lead to engine damage. If
you detect a persistent heavy spark
knock even when using gasoline of the
stated octane rating, or if you hear steady
spark knock while holding a steady
speed on level roads, have an authorized
NISSAN dealer correct the condition.
Failure to correct the condition is misuse
of the vehicle, for which NISSAN is not
responsible.
Incorrect ignition timing may result in spark
knock, after-run and/or overheating, which
may cause excessive fuel consumption or
engine damage. If any of the above symp-toms are encountered, have your vehicle
checked at an authorized NISSAN dealer or
other competent service facility.
However, now and then you may notice
light spark knock for a short time while
accelerating or driving up hills. This is
not a cause for concern, because you
get the greatest fuel benefit when there
is light spark knock for a short time
under heavy engine load.
10-4Technical and consumer information
ZX

ModelGA16DE SR20DE
Type Gasoline, 4-cycle, DOHC Gasoline, 4-cycle, DOHC
Cylinder arrangement 4-cylinder in-line 4-cylinder in-line
Bore ý Stroke in (mm) 2.992 ý 3.465 (76.0 ý 88.0) 3.386 ý 3.386 (86.0 ý 86.0)
Displacement cu in (cm
3) 97.45 (1,597) 121.92 (1,998)
Firing order1-3-4-2 1-3-4-2
Idle speed rpm
See the ``Emission Control label'' on the underside of the hood. Ignition timing degree (B.T.D.C.) at idle speed
degree/rpm
CO percentage at idle speed
[No air] %
Platinum-tipped type
(Standard for SR20DE)Conventional type
Spark plug Hot BKR4E-11 BKR5E
Standard BKR5E-11 PFR5B-11 BKR6E
Cold BKR6E-11 PFR6B-11, PFR7B-11 BKR7E
Camshaft operation Timing chain Timing chain
Spark plug gap in (mm) 0.039 to 0.043 (1.0 to 1.1) Ð 0.031 to 0.035 (0.8 to 0.9)
Generator belt size
Width ý Length in (mm)0.843 x 32.28, (21.4 x 820)
0.843 x 44.09, (21.4 x 1,120)*10.559 x 32.68, (14.2 x 830)
0.843 x 40.75, (21.4 x 1,035)*1
*1: With air conditioner
The spark ignition system of this vehicle meets all requirements of the Canadian Interference-Causing Equipment Regulations.
ENGINE
10-8Technical and consumer information
ZX

Headlight and turn signal switch ............... 2-12
Headlights .................................................. 8-26
Heater
Heater and air conditioner controls ........ 4-3
Heater operation ..................................... 4-4
Hood release ............................................... 3-9
I
Ignition switch .............................................. 5-4
Increasing fuel economy............................ 5-15
Indicator lights and chimes (See warning/
indicator lights and chimes) ......................... 2-5
Inside mirror ............................................... 3-15
Instrument brightness control .................... 2-13
Interior light ................................................ 2-18
J
Jump starting ............................................... 6-8
K
Key ............................................................... 3-2
Keyless entry system (See multi-remote
control system) ............................................ 3-4L
Labels
Air conditioner specification label ....... 10-12
Emission control information label...... 10-12
Engine serial number ......................... 10-11
F.M.V.S.S. certification label .............. 10-11
Vehicle identification number (VIN)
plate .................................................... 10-10
Warning labels (for SRS) ..................... 1-11
License plate
Installing the license plate .................. 10-13
Light
Air bag warning light ..................... 1-11, 2-6
Brake light (See stop light) ................... 8-27
Bulb check/instrument panel .................. 2-5
Charge warning light .............................. 2-5
Front fog light switch ............................ 2-13
Headlight aiming adjustment ................ 8-27
Headlight and turn signal switch .......... 2-12
Headlights ............................................. 8-26
Interior light ........................................... 2-18
Light bulbs ............................................ 8-26
Trunk light ............................................. 2-19
Warning/indicator lights and chimes ...... 2-5
Lock
Child safety rear door lock ..................... 3-8
Door locks............................................... 3-2
Fuel filler lid lock opener lever ............. 3-12
Trunk lid lock opener lever ................... 3-10Luggage (See vehicle loading
information) .............................................. 10-13
M
Maintenance
General maintenance ............................. 9-2
Inside the vehicle.................................... 9-3
Maintenance precautions ....................... 8-2
Outside the vehicle ................................. 9-2
Periodic maintenance schedules ............ 9-5
Seat belt maintenance.......................... 1-21
Under the hood and vehicle ................... 9-4
Malfunction indicator lamp (MIL) ................. 2-8
Manual windows ........................................ 2-16
Meters and gauges ...................................... 2-2
Mirror
Inside mirror.......................................... 3-15
Outside mirror control ........................... 3-14
Vanity mirror ......................................... 3-15
Multi-remote control system ........................ 3-4
O
Octane rating (See fuel octane rating) ...... 10-3
Oil
Capacities and recommended fuel/
lubricants .............................................. 10-2
Changing engine oil................................ 8-9
Changing engine oil filter...................... 8-10
Checking engine oil level ....................... 8-8
11-3
ZX

Headlight and turn signal switch .......... 2-12
Ignition switch ......................................... 5-4
Overdrive switch.............................. 5-8, 5-9
Rear window defogger switch .............. 2-11
Windshield wiper and washer switch ... 2-11
T
Tachometer .................................................. 2-3
Theft warning ............................................... 2-9
Three way catalyst....................................... 5-2
Tilting steering wheel ................................. 3-14
Tire
Flat tire.................................................... 6-2
Spare tire....................................... 6-2, 8-36
Tire chains ............................................ 8-34
Tire placard......................................... 10-12
Tire pressure ........................................ 8-33
Tire rotation .......................................... 8-34
Types of tires ........................................ 8-33
Uniform tire quality grading ................ 10-18
Wheels and tires................................... 8-33
Wheel/tire size ...................................... 10-9
Towing
Tow truck towing .................................. 6-11
Towing load/specification chart .......... 10-16
Trailer towing ...................................... 10-15
Transmission
Automatic transmission fluid (ATF) ...... 8-11
Driving with automatic transmission ....... 5-6
Driving with manual transmission ........... 5-9
Selector lever lock release ..................... 5-5Travel (See registering your vehicle in
another country)....................................... 10-10
Trip odometer .............................................. 2-3
Trunk access through the rear seat ............ 1-5
Trunk lid lock opener lever ........................ 3-10
Trunk light .................................................. 2-19
Tuning ........................................................ 4-11
U
Uniform tire quality grading ..................... 10-18
V
Vanity mirror .............................................. 3-15
Vehicle dimensions and weights ............... 10-9
Vehicle identification number (VIN)
(chassis number) ..................................... 10-10
Vehicle identification number (VIN)
plate ......................................................... 10-10
Vehicle recovery ........................................ 6-12
Ventilators .................................................... 4-2
W
Warning
Air bag warning light ..................... 1-11, 2-6
Hazard warning flasher switch ............. 2-14
Theft warning .......................................... 2-9
Warning labels (for SRS) ..................... 1-11
Warning/indicator lights and chimes ...... 2-5Weights (See dimensions and weights) .... 10-9
Wheels and tires ........................................ 8-33
Wheel/tire size ........................................... 10-9
When traveling or registering your vehicle
in another country .................................... 10-10
Window washer fluid.................................. 8-14
Windows
Locking passengers' windows .............. 2-16
Manual windows ................................... 2-16
Power windows..................................... 2-16
Rear power windows ............................ 2-17
Windshield wiper and washer switch ........ 2-11
Wiper
Windshield wiper and washer switch ... 2-11
Wiper blades......................................... 8-21
11-5
ZX