Page 242 of 388

If your vehicle is certified to meet California Emission
Standards (indicated on the underhood tune-up label), it
is designed to operate on fuels that meet California
specifications. If such fuels are not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
specifications, but emission control system performance
may be affected. The malfunction indicator lamp on
your instrument panel may turn
on and/or your vehicle
may fail
a smog-check test. If this occurs, return to your
authorized Geo dealer for diagnosis to determine the
cause
of failure. In the event it is determined that the
cause
of the condition is the type of fuels used, repairs
may
not be covered by your warranty.
Some gasolines that are not reformulated for low
emissions contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT);
ask your service station operator whether or not his
fuel
contains MMT. General Motors does not recommend the
use of such gasolines.
If fuels containing MMT are used,
spark plug life may be reduced and your emission
control system performance may be affected. The
malfunction indicator lamp on your instrument panel
may
turn on. If this occurs, return to your authorized
Geo dealer for service. To
provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent deposits from forming in your engine and fuel
system, allowing your emission control system
to
function properly. Therefore, you should not have to add
anything to the fuel. In addition, gasolines containing
oxygenates, such
as ethers and ethanol, and
reformulated gasolines may be available in your area to
help clean the air. General Motors recommends that you
use these gasolines if they comply with the
specifications described earlier.
NOTICE:
Your vehicle was not designed for fuel that
contains methanol. Don’t use it. It can corrode
metal parts in your fuel system and also damage
plastic and rubber parts. That damage wouldn’t
be covered under your warranty.
6-4
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Page 244 of 388

The cap is behind a hinged door on the passenger’s side
of your vehicle. On four-door models, use the key to the
vehicle to unlock the
fuel door.
To take off the cap, turn it slowly
to the left
(counterclockwise).
1 /1 CAUTION:
If you get gasoline on yourself and then
something ignites it, you could be badly burned.
Gasoline can spray out on you
if you open the
fuel filler cap
too quickly. This spray can happen
if your tank is nearly full, and is more likely in
hot weather. Open the fuel filler cap slowly and
wait for any “hiss” noise
to stop. Then unscrew
the cap all the
way.
Be careful not to spill gasoline. Clean gasoline from
painted surfaces
as soon as possible. See “Cleaning the
Outside of Your Geo”
in the Index. When you
put the cap back on, turn it to the right
(clockwise)
until you hear at least three clicks. Make
sure you
fully install the cap. The diagnostic system can
determine
if the fuel cap has been left off or improperly
installed. This would allow fuel to evaporate into the
atmosphere. See “Malfunction Indicator Lamp”
in
the Index.
I
NOTICE:
If you need a new cap, be sure to get the right
type. Your dealer can get one for you. If you get
the wrong type, it may not fit or have proper
venting. This may cause
your malfunction
indicator lamp to light and your fuel tank and
emissions system may be damaged. See
“Malfunction Indicator Lamp” in the Index.
6-6
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Page 279 of 388

Inflation -- Tire Pressure
The Tire-Loading Information label, which is on the
driver’s door lock pillar, shows
the correct inflation
pressures for your tires when they’re cold. “Cold”
means your vehicle has been sitting for at least
three hours or driven
no more than 1 mile ( 1.6 km).
I NOTICE:
Don’t let anyone tell you that underinflation or
overinflation is all right. It’s not.
If your tires
don’t have enough air (underinflation), you can
get the following:
Too much flexing
Too much heat
Tire overloading
Bad wear
Bad handling
Bad fuel economy.
NOTICE: (Continued) NOTICE:
(Continued)
If your tires have too much air (overinflation),
you can get the following:
Unusual wear
Bad handling
Rough ride
Needless damage from road hazards.
When to Check
Check your tires once a month or more. Also, check
the tire pressure of the spare tire.
How to Check
Use a good quality pocket-type gage to check tire
pressure. You can’t tell
if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they’re underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.
6-4 1
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Page 300 of 388

Replacement Bulbs
Center High-Mounted Stop ................. 921
Dome
........ GM Part No. 96051559 or equivalent
Front Parking and Turn Signal
........... 11 57 NA
Headlamp (Halogen) ..................... 9004
Rear Hazard and Turn Signal
............... 1156
Rear Parking and Stop
.................... 1157
Sidemarker
.............................. 194
Capacities and
Engine
Type ............
Specifications
........................ L4
Compression Ratio ....................... 9.5: 1
Firing Order
.......................... 1-3-4-2
Horsepower
.............................. 95
Fuel Delivery .................... Fuel Injection
Piston Displacement
............... 97 CTD (1.6L)
Valve Arrangement
............ In-Head “V” Type AC
Belt Tension
........ Deflect Belt 0.24-0.3 inch
(6-9 mm)
@ 22 lbs. (10 kg) Pressure
Fan Belt Tension
Inspection
.......... Deflect Belt 0.24-0.32 inch
(6-8 mm)
@ 22 lbs. (10 kg) Pressure
Replacement
........ Deflect Belt 0.20-0.28 inch
(5-7 mm)
@ 22 lbs. (10 kg) Pressure
Specification
................... 180” F (82 O C)
Thermostat Temperature
Replacement Parts
Air Cleaner Filter ................. 13780-58k20
GM Part No. 96068629 or equivalent
Battery
....... .................... 26R-50s
Engine
Oil Filter .......... GM Part No. 25014441
Fuel Filter
..................... AC Type GF571
GM Part No. 96058022 or equivalent
PCV Valve
............... GM Part No. 96058079
or equivalent
Radiator Pressure Cap
............ 13 psi (90 kPa)
Spark Plug
................... AC Type R43XLS
Gap: 0.028-0.032 inches
(0.7-0.8 mm)
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