1999 LEXUS SC300 engine

SECTION 6 ± 1
318
SERVICE PROCEDURES AND
SPECIFICATIONS
Introduction
Vehicle identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
318
Engine compartment overview (SC400) . . . . . . . . . . . . . . . . .
320
Engine compartment overview (SC300) . . . . . . . . . . . . . . . . .
322
Do±it±yourself service precautions . . . . . . . . . . . . . . . . . . . . .
324
Parts and tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.
325
VEHICLE IDENTIFICATION

INTRODUCTION
320
The engine number is stamped on the engine block as
shown.
ENGINE COMPARTMENT OVERVIEW(SC400)

INTRODUCTION
322
ENGINE COMPARTMENT OVERVIEW(SC300)

INTRODUCTION
324
DO±IT±YOURSELF SERVICEPRECAUTIONS
If you perform maintenance yourself, be sure to follow the
correct procedure given in this Section.
You should be aware that improper or incomplete servicing
may result in operating problems.
Performing do±it±yourself maintenance during the warranty
period may affect your warranty coverage. Read the separate
Lexus 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 5, there are still a number of items that must be
performed by a qualified technician with special tools.
For information on tools and parts for do±it±yourself
maintenance, see ºParts and toolsº.
Utmost care should be taken when working on your vehicle
to prevent accidental injury. Here are a few precautions that
you should be especially careful to observe:
CAUTION

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

INTRODUCTION
325

Right after driving, the engine compartment ± the
engine, radiator, exhaust manifold and power
steering fluid reservoir, etc. ± will be hot. So be
careful not to touch them. Oil and other fluids may
also be hot.

Do not smoke, cause sparks or allow open flames
near fuel or the battery. Their fumes are fl ammable.

Be extremely cautious when working on the battery.
It contains poisonous and corrosive sulfuric acid.

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.
NOTICE

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

Before closing the engine hood, check to see that you
have not forgotten any tools, rags, etc.

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

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

Be careful not to scratch the glass surface with the
wiper frame.
PARTS AND TOOLS
Here is a list of parts and tools you will need to perform
do±it±yourself maintenance. Remember all Lexus parts are
designed in metric sizes, so your tools must be metric.
Checking the engine oil level
Parts (if level is low):

Use API grade SJ, ºEnergy±Conservingº multigrade
engine oil or ILSAC multigrade engine oil. For
recommended oil viscosity, see page 346.
Tools:

INTRODUCTION
326

Rag or paper towel

Funnel (only for adding oil)
Checking the engine coolant level
Parts (if level is low):

ºToyota Long Life Coolantº or equivalent
See ºChecking the engine coolant levelº on page 342 for
instructions.

Demineralized or distilled water
Tools:

Funnel (only for adding coolant)
Checking the engine fan fluid
Part (if level is low)

Automatic transmission fluid DEXRON
II or III
Tools:

Funnel (only for adding fluid)
Checking brake fluid
Parts (if level is low):

FMVSS No. 116 DOT 3 or SAE J1703 brake fluid
Tools:

Funnel (only for adding fluid)
Checking power steering fluid
Parts (if level is low):

Automatic transmission fluid DEXRON
II or III
Tools:

Rag or paper towel

Funnel (only for adding fluid)

SECTION 6 ± 2
329
SERVICE PROCEDURES AND
SPECIFICATIONS
Engine
Specifications (SC400) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
330
Specifications (SC300) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
334
Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . .
337
Facts about engine oil consumption . . . . . . . . . . . . . . . . . . . .
339
Used engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
341
Checking the engine oil level . . . . . . . . . . . . . . . . . . . . . . . . .
342
Checking the engine coolant level . . . . . . . . . . . . . . . . . . . . .
347
Checking the engine fan fluid . . . . . . . . . . . . . . . . . . . . . . . . .
349
Spark plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . .
350

ENGINE
330
SPECIFICATIONS (SC400)
± GENERALModel
Type
Bore and stroke
Displacement
Valve clearance (engine cold) Intake
Exhaust
Drive belt tension
1UZ±FE
8 cylinder V type, 4 cycle, gasoline
87.5 X 82.5 mm (3.44 X 3.25 in.)
3969 cm
3 (242.1 cu.in.)
0.15 ± 0.25 mm (0.006 ± 0.010 in.)
0.25 ± 0.35 mm (0.010 ± 0.014 in.)
Automatic adjustment
± LUBRICATION SYSTEM