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LUBRICATION AND MAINTENANCE
0 - 1 9
FUEL SYSTEM
Inspect the fuel system cap, lines, hoses a n d con-
nections a t t h e mileage or t i m e i n t e r v a l s specified i n
the L u b r i c a t i o n and Maintenance Schedule.
Use gasoline h a v i n g a m i n i m u m octane r a t i n g o f
87 (R + M)/2.
Should y o u r vehicle develop spark k n o c k (ping),
purchase y o u r gasoline f r o m a different source. V e h i -
cles may respond differently t o gasolines h a v i n g the
same octane r a t i n g . Occasional trace k n o c k a t l o w
engine speeds is n o t h a r m f u l . Continued knock a t
h i g h speeds, however, can damage y o u r engine and
should be reported t o your dealer i m m e d i a t e l y . E n -
gine damage, as t h e r e s u l t o f continued operation of
a vehicle w i t h spark knock, m a y not be covered b y
the new vehicle w a r r a n t y .
I n addition t o choosing t h e proper octane r a t i n g ,
use o f gasolines c o n t a i n i n g h i g h level o f detergent
additives is also recommended. The use o f these h i g h
detergent gasolines w i l l reduced fuel injector and i n -
take system deposit build-up a n d m a i n t a i n t h e excel-
l e n t
d r i v e a b i l i t y o f your
vehicle.
I f i n doubt,
p r e m i u m unleaded gasolines generally c o n t a i n more
detergent additives t h a n t h e lower octane regular
unleaded gasolines.
Unleaded gasolines only, m u s t be used i n vehicles
equipped w i t h catalyst emission control systems. A l l
vehicles so equipped have labels located o n t h e i n -
strument panel and adjacent t o the fuel filler cap or
door t h a t state U N L E A D E D F U E L O N L Y . These ve-
hicles also have fuel filler tubes specially designed t o
accept t h e smaller diameter unleaded gasoline dis-
pensing nozzles only.
The exhaust emission system o f your vehicle is de-
signed to meet a l l emission regulations w h i l e , a t the
same t i m e , p r o v i d i n g excellent fuel economy. Cata-
l y s t systems require t h a t only unleaded gasoline be
used. Use o f leaded fuel w i l l n o t only destroy the ef-
fectiveness o f the catalytic converter used t o reduce
exhaust emissions, b u t w i l l also make p a r t o f t h e
fuel control system inoperative and lead t o h i g h fuel
consumption. D a m a g e r e s u l t i n g from t h e u s e o f
l e a d e d g a s o l i n e m a y n o t b e c o v e r e d b y t h e n e w
v e h i c l e w a r r a n t y .
GASOLINES
CONTAINING
ALCOHOL
Some gasolines sold a t service stations contain a l -
cohol, a l t h o u g h they m a y not be so identified. Use o f
fuels containing alcohol is not recommended, unless
t h e nature o f the b l e n d can be determined as being
satisfactory.
G A S O H O L - A m i x t u r e o f 10% ethanol ( g r a i n a l -
cohol) a n d 9 0 % unleaded gasoline m a y be used i n
your vehicle. I f d r i v e a b i l i t y problems are experienced
as a result o f u s i n g G A S O H O L , i t is recommended
t h a t the vehicle be operated o n unleaded gasoline,
only.
M E T H A N O L - D O N O T use gasoline containing
methanol (wood alcohol). Use of t h i s type of alcohol
can r e s u l t i n vehicle performance deterioration and
damage t o c r i t i c a l parts i n t h e fuel pump, injector
and other fuel system components. F u e l system dam-
age
a n d vehicle performance problems, r e s u l t i n g
from the use o f gasoline containing methanol alcohol,
m a y not be covered b y t h e new vehicle w a r r a n t y .
GASOLINES
CONTAINING
MTBE
Gasoline a n d M T B E blends are a m i x t u r e of u n -
leaded gasoline a n d u p to 15% M T B E ( M e t h y l Ter-
t i a r y B u t y l E t h e r ) . Gasoline blended w i t h
M T B E
m a y be used i n y o u r vehicle.
MATERIALS
ADDED TO FUEL
I n d i s c r i m i n a t e use o f fuel system cleaning agents
should be avoided. M a n y of these materials intended
for g u m a n d v a r n i s h removal may contain h i g h l y ac-
t i v e solvents or s i m i l a r ingredients t h a t can be
h a r m f u l t o gasket a n d diaphragm materials used i n
fuel system component parts.
FUEL
FILTER
A plugged fuel filter can be caused by contami-
nants i n t h e fuel. T h i s can l i m i t t h e speed a t w h i c h a
vehicle c a n be d r i v e n a n d cause hard starting. I f
these conditions occur, the filter should be replaced.
VACUUM OPERATED COMPONENTS
Inspect a l l v a c u u m operated a n d emission related
components t o ensure they are not cracked or broken.
Replace component(s), as necessary.
EXHAUST GAS RECIRCULATION (EGR) SYSTEM
The E G R valve and E G R tube ( i f so equipped) a t
the mileage or t i m e i n t e r v a l specified i n the Lubrica-
t i o n and Maintenance Schedules. For additional i n -
f o r m a t i o n
refer
t o Group 25, Emission Control
System.
IGNITION WIRES, DISTRIBUTOR CAP AND ROTOR
Replace t h e i g n i t i o n wires, distributor cap and ro-
tor a t t h e mileage i n t e r v a l indicated on the Lubrica-
t i o n
a n d Maintenance
Schedule.
Check
the
d i s t r i b u t o r for excessive wear and proper component
clearances. Replace, i f necessary.
OXYGEN (0
2
) SENSOR
Replace t h e oxygen sensor a t t h e mileage a n d t i m e
i n t e r v a l specified i n t h e L u b r i c a t i o n a n d M a i n t e -
nance Schedule. Refer to Group 25, Emission Control
System for a d d i t i o n a l i n f o r m a t i o n .
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