Get Information before driving your Toyota -> Engine exhaust cautions Guide for Toyota Celica 2 Door Sixth Generation (1993-1999)

CELICA

Engine exhaust cautions

NOTICE

z If the engine becomes difficult to

start or stalls frequently, take your

vehicle in for a check−up as pos-

sible. Remember, your Toyota dealer

knows your vehicle and its three−

way catalytic converter system best.

CAUTION

large amount of unburned gases

D Avoid inhaling the engine exhaust.

It contains carbon monoxide, which

is a colorless and odorless gas. It

can cause unconsciousness or even

death.

flowing into the three−way catalytic

converter may cause it to overheat

and create a fire hazard. To prevent

this and other damage, observe the

following precautions:

z To ensure that the three−way cata-

lytic converter and the entire emis-

sion control system operate proper-

ly, your vehicle must receive the

periodic inspections required by the

Toyota Maintenance Schedule. For

scheduled maintenance information,

refer to the separate ”Owner’s

D Make sure the exhaust system has

no holes or loose connections. The

system should be checked from

time to time. If you hit something,

or notice a change in the sound of

the exhaust, have the system

checked immediately.

z Use only unleaded gasoline.

z Do not drive with an extremely low

fuel level; running out of fuel could

cause the engine to misfire, creat-

ing an excessive load on the three−

way catalytic converter.

Manual

Supplement/Maintenance

D Do not run the engine in a garage

or enclosed area except for the

time needed to drive the vehicle in

or out. The exhaust gases cannot

escape, making this a particularly

dangerous situation.

z Do not allow the engine to run at

idle speed for more than 20 min-

utes.

schedule”.

z Avoid racing the engine.

z Do not push−start or pull−start your

vehicle.

D Do not remain for a long time in a

parked vehicle with the engine run-

ning. If it is unavoidable, however,

do so only in an unconfined area

and adjust the heating or cooling

system to force outside air into the

vehicle.

z Do not turn off the ignition while

the vehicle is moving.

z Keep your engine in good running

order. Malfunctions in the engine

electrical system, electronic ignition

system/distributor ignition system

or fuel system could cause an ex-

tremely high three−way catalytic

converter temperature.

114

CELICA

Facts about engine oil

consumption

FUNCTIONS OF ENGINE OIL

The amount of engine oil consumed de-

pends on the viscosity of the oil, the

quality of the oil and the conditions the

vehicle is driven under.

D Keep the trunk lid or back door

closed while driving. An open or

unsealed trunk lid or back door

may cause exhaust gases to be

drawn into the vehicle.

Engine oil has the primary functions of

lubricating and cooling the inside of the

engine, and plays a major role in main-

taining the engine in proper working order.

More oil is consumed by high−speed driv-

ing and frequent acceleration and decel-

eration.

ENGINE OIL CONSUMPTION

D To allow proper operation of your

vehicle’s ventilation system, keep

the inlet grilles in front of the wind-

shield clear of snow, leaves, or oth-

er obstructions.

It is normal that an engine should con-

sume some engine oil during normal

engine operation. The causes of oil

consumption in a normal engine are as

follows.

A new engine consumes more oil, since

its pistons, piston rings and cylinder walls

have not become conditioned.

When judging the amount of oil con-

sumption, note that the oil may become

diluted and make it difficult to judge

the true level accurately.

D If you smell exhaust fumes in the

vehicle, drive with the windows

open and the trunk lid or back door

closed. Have the cause immediately

located and corrected.

D Oil is used to lubricate pistons, piston

rings and cylinders. A thin film of oil

is left on the cylinder wall when a pis-

ton moves downwards in the cylinder.

High negative pressure generated when

the vehicle is decelerating sucks some

of this oil into the combustion chamber.

This oil as well as some part of the oil

film left on the cylinder wall is burned

by the high temperature combustion

gases during the combustion process.

As an example, if a vehicle is used for

repeated short trips, and consumes a nor-

mal amount of oil, the dipstick may not

show any drop in the oil level at all, even

after 1000 km (600 miles) or more. This

is because the oil is gradually becoming

diluted with fuel or moisture, making it

appear that the oil level has not changed.

D Oil is also used to lubricate the stems

of the intake valves. Some of this oil

is sucked into the combustion chamber

together with the intake air and is

burned along with the fuel. High tem-

perature exhaust gases also burn the

oil used to lubricate the exhaust valve

stems.

The diluting ingredients evaporate out

when the vehicle is then driven at high

speeds, as on an expressway, making it

appear that oil is excessively consumed

after driving at high speeds.

115

Information before driving your Toyota -> Engine exhaust cautions for Your Toyota Celica 2 Door Sixth Generation (1993-1999)

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