2001 TOYOTA SEQUOIA spark plugs

IG0152
IG0148
P03792
± IGNITIONIGNITION SYSTEM
IG±3
2864 Author: Date:
2005 SEQUOIA (RM1146U)
(c) Clean the spark plugs.
If the electrode has traces of wet carbon, allow it to dry and then
clean with a spark plug cleaner.
Air pressure: Below 588 kPa (6 kgf/cm
2, 85 psi)
Duration: 20 seconds or less
HINT:
If there are traces of oil, remove it with gasoline before using the
spark plug cleaner.
(d) Check the spark plug for thread damage and insulator
damage.
If abnormal, replace the spark plug.
Recommended spark plug:
DENSO madeSK20R11
NGK madeIFR6A11
(e) Adjust the spark plug electrode gap.
Electrode gap: 1.0 to 1.1 mm (0.039 to 0.043 in.)
(f) Using a 16 mm plug wrench, install the spark plugs.
Torque: 17.5 N´m (180 kgf´cm, 13 ft´lbf)
(g) Reinstall the ignition coils (with igniter).
(see page IG±6)

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INFORMATION BEFORE DRIVING YOUR
TOYOTA
Information before driving your Toyota
Off±road vehicle precautions334 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Break±in period335 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel335 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel pump shut off system337 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation in foreign countries337 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Three±way catalytic converters338 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine exhaust cautions339 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Facts about engine oil consumption339 . . . . . . . . . . . . . . . . . . . . . . . . . .
Iridium±tipped spark plugs341 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake system341 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake pad wear limit indicators345 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Your Toyota's identification345 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft prevention labels346 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspension and chassis346 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire information347 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle load limits355 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cargo and luggage356 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Types of tires358 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2

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Your engine is fitted with iridium±tipped
spark plugs.
NOTICE
Use only iridium±tipped spark plugs
and do not adjust gaps for your en-
gine performance and smooth drive-
ability.
The tandem master cylinder brake system
is a hydraulic system with two separate
sub±systems. If either sub±system should
fail, the other will still work. However, the
pedal will be harder to press, and your
stopping distance will increase. Also, the
brake system warning light may come on.
CAUTION
Do not drive your vehicle with only a
single brake system. Have your
brakes fixed immediately.
BRAKE BOOSTER
The brake booster uses engine vacuum to
power±assist the brakes. If the engine
should quit while you are driving, you can
bring the vehicle to a stop with normal
pedal pressure. There is enough reserved
vacuum for one or two stopsÐbut no
more!
CAUTION

Do not pump the brake pedal if the
engine stalls. Each push on the
pedal uses up your reserved vacu-
um.

Even if the power assist is com-
pletely lost, the brakes will still
work. But you will have to push the
pedal hard, much harder than nor-
mal. And your braking distance will
increase.
Iridium±tipped spark plugs Brake system

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To avoid serious personal injury and
damage to your vehicle which might re-
sult from battery explosion, acid burns,
electrical burns, or damaged electronic
components, these instructions must be
followed precisely.
If you are unsure about how to follow this
procedure, we strongly recommend that
you seek the help of a competent me-
chanic or towing service.
CAUTION

Batteries contain sulfuric acid
which is poisonous and corrosive.
Wear protective safety glasses when
jump starting, and avoid spilling
acid on your skin, clothing, or ve-
hicle.

If you should accidentally get acid
on yourself or in your eyes, remove
any contaminated clothing and flush
the affected area with water imme-
diately. Then get immediate medical
attention. If possible, continue to
apply water with a sponge or cloth
while en route to the medical office.

The gas normally produced by a
battery will explode if a flame or
spark is brought near. Use only
standardized jumper cables and do
not smoke or light a match while
jump starting.
NOTICE
The battery used for boosting must
be 12 V. Do not jump start unless you
are sure that the booster battery is
correct.
JUMP STARTING PROCEDURE
1. If the booster battery is installed in
another vehicle, make sure the vehicles
are not touching. Turn off all unneces-
sary lights and accessories.
When boosting, use the battery of
matching or higher quality. Any other
battery may be difficult to jump start
with.
If jump starting is difficult, charge the
battery for several minutes.
2. If required, remove all the vent plugs
from the booster and discharged batter-
ies. Lay a cloth over the open vents
on the batteries. (This helps reduce the
explosion hazard, personal injuries and
burns.)
3. If the engine in the vehicle with the
booster battery is not running, start it
and let it run for a few minutes. During
jump starting run the engine at about
2000 rpm with the accelerator pedal
lightly depressed.
(c) Jump starting

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If you perform maintenance by yourself,
be sure to follow the correct procedure
given in this Section.
You should be aware that improper or in-
complete servicing may result in operating
problems.
Performing do±it±yourself maintenance
during the warranty period may affect your
warranty coverage. Read the separate
Toyota Warranty statement for details and
suggestions.
This Section gives instructions only for
those items that are relatively easy for an
owner to perform. As explained in Section
6, there are still a number of items that
must be done by a qualified technician
with special tools.
For information on tools and parts for do±
it±yourself maintenance, see ªParts and
toolsº on page 421 in this Section.
Utmost care should be taken when work-
ing on your vehicle to prevent accidental
injury. Here are a few precautions that
you should be especially careful to ob-
serve:CAUTION

When the engine is running, keep
hands, clothing, and tools away
from the moving fan and engine
drive belts. (Removing rings,
watches, and ties is advisable.)

Right after driving, the engine
compartmentÐthe engine, radiator,
exhaust manifold, power steering
fluid reservoir and spark plug
boots, etc.Ðwill be hot. So be care-
ful not to touch them. Oil, fluids
and spark plugs may also be hot.

If the engine is hot, do not remove
the radiator cap or loosen the drain
plugs to prevent burning yourself.

Do not leave anything that may
burn easily, such as paper or rags,
in the engine compartment.

Do not smoke, cause sparks or al-
low open flames around fuel or the
battery. Their fumes are flammable.

Do not get under your vehicle with
just the body jack supporting it. Al-
ways use automotive jack stands or
other solid supports.

Use eye protection whenever you
work on or under your vehicle
where you may be exposed to flying
or falling material, fluid spray, etc.

Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as in-
flammation or skin cancer, so care
should be taken to avoid prolonged
and repeated contact with it. To re-
move used engine oil from your
skin, wash thoroughly with soap
and water.

Do not leave used oil within the
reach of children.

Dispose of used oil and filter only
in a safe and acceptable manner.
Do not dispose of used oil and fil-
ter in household trash, in sewers or
onto the ground. Call your dealer or
a service station for information
concerning recycling or disposal.

Be extremely cautious when work-
ing on the battery. It contains poi-
sonous and corrosive sulfuric acid.
Do±it±yourself service
precautions

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NOTICE

Remember that battery and ignition
cables carry high currents or volt-
ages. Be careful of accidentally
causing a short circuit.

Add only ªToyota Super Long Life
Coolantº or similar high quality eth-
ylene glycol based non±silicate,
non±amine, non±nitrite, and non±bo-
rate coolant with long±life hybrid
organic acid technology to fill the
radiator. ªToyota Super Long Life
Coolantº is a mixture of 50% cool-
ant and 50% deionized water (for
the U.S.A.) or 55% coolant and 45%
deionized water (for Canada).

If you spill some of the coolant, be
sure to wash it off with water to
prevent it from damaging the parts
or paint.

Do not allow dirt or anything else
to fall through the spark plug holes.

Use only spark plugs of the speci-
fied type. Using other types will
cause engine damage, loss of per-
formance or radio noise.

Do not reuse iridium±tipped spark
plugs by cleaning or regapping.

Do not overfill automatic transmis-
sion fluid, or the transmission
could be damaged.

Do not drive with the air cleaner
filter removed, or excessive engine
wear could result. Also backfiring
could cause a fire in the engine
compartment.

Be careful not to scratch the glass
surface with the wiper frame.

When closing the engine hood,
check to see that you have not for-
gotten any tools, rags, etc.
Here is a list of parts and tools you will
need to perform do±it±yourself mainte-
nance. Remember all Toyota parts are de-
signed in metric sizes, so your tools must
be metric.
CHECKING THE ENGINE OIL LEVEL
Parts (if level is low):

ªToyota Genuine Motor Oilº or equiva-
lent
See page 425 in Section 7±2 for de-
tails about engine oil selection.
Tools:

Rag or paper towel

Funnel (only for adding oil)
CHECKING THE ENGINE COOLANT
LEVEL
Parts (if level is low):

ªToyota Super Long Life Coolantº or
similar high quality ethylene glycol
based non±silicate, non±amine, non±ni-
trite, and non±borate coolant with long±
life hybrid organic acid technology.
ªToyota Super Long Life Coolantº is a
mixture of 50% coolant and 50% deion-
ized water (for the U.S.A.) or 55%
coolant and 45% deionized water (for
Canada).
Parts and tools