Cylinder TOYOTA CAMRY 2000 Service User Guide

Drive belt tension:
w/ A/C
New belt
175 + 5 lbf
Used belt
130 + 10 lbf
w/o A/C
New belt
125 + 25 lbf
Used belt
95 + 20 lbf
If the belt tension is not as specified, adjust it.
HINT:
wªNew beltº refers to a belt which has been used
less than 5 minutes on a running engine.
wªUsed beltº refers to a belt which has been used
on a running engine for 5 minutes or more.
wAfter installing a belt, check that it fits properly in
the ribbed grooves.
wCheck with your hand to confirm that the belt has
not slipped out of the groove on the bottom of
the pulley.
wAfter installing a new belt, run the engine for
about 5 minutes and recheck the belt tension.
VALVE CLEARANCE INSPECTION AND
ADJUSTMENT
HINT: Inspect and adjust the valve clearance when
the engine is cold.
1. DISCONNECT HIGH ± TENSION CORDS FROM
SPARK PLUGS
Disconnect the high ± tension cords at the rubber
boot. DO NOT pull on the cords.
NOTICE: Pulling on or bending the cords may damage the
conductor inside.
2. REMOVE CYLINDER HEAD COVER
(a) Disconnect the PCV hoses.
(b) Loosen the 2 wire harness clamp bolts (No.2 timing
belt cover) mounting bolts.
(c) Remove the 4 nuts, grommets, head cover and gasket.
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4. INSPECT VALVE CLEARANCE
(a) Check only the valves indicated.
Using a thickness gauge, measure the clearance
between the valve lifter and camshaft.
Record the out± of ±specification valve clear±
ance measurements. They will be used later to
determine the required replacement adjusting
shim.
Valve clearance (Cold):
Intake
0.19 ± 0.29 mm (0.007 ± 0.011 in.)
Exhaust
0.28 ± 0.38 mm (0.011 ± 0.015 in.) 3. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley and align its groove with
timing mark ª0º of the No.1 timing belt cover.
(b) Check that the valve lifters on the No.1 cylinder are
loose and valve lifters on the No.4 are tight.
If not, turn the crankshaft one revolution (360*) and
align the mark as above.
(b) Turn the crankshaft one revolution (360
) and align
the mark as above. (See procedure in step 3)
(c) Check only the valves indicated as shown. Measure
the valve clearance. (See procedure in step (a)) HINT: Arrange the grommets in correct order, so that
they can be reinstalled into their original positions.
This minimizes any possibility of oil leakage due to
reuse of grommets.
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(c) Install the gasket to the head cover.
(d) Install the head cover with the 4 grommets and nuts.
Uniformly tighten the nuts in several passes.
Torque: 23 N±m (230 kgf±cm. 17 ft±lbf)
HINT: Install the grommets so that their markings are
as shown in the illustration.
(e) Tighten the 2 wire harness clamp (No.2 timing belt
cover) mounting bolts.
(f) Connect the PCV hoses.
7. RECONNECT HIGH±TENSION CORDS TO SPARK
PLUGS(c) Install a new adjusting shim.
wPlace a new adjusting shim on the valve lifter.
wUsing SST (A), press down the valve lifter and
remove SST (B).
SST 09248±50020 (09248±05011, 09248±05021)
(d) Recheck the valve clearance.
6. REINSTALL CYLINDER HEAD COVER
(a) Remove any old packing (FIPG) material.
(b) Apply seal packing to the cylinder head as shown in
the illustration.
Seal pecking:
Part No.08826±00080 or equivalent
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Troubleshooting
If the CO/HC concentration does not comply with
regulations, perform troubleshooting in the order
given below.
(a) Check oxygen sensor operation.
(See page EG1±231)
(b) See the table below for possible causes, then inspect
and correct the applicable causes if necessary.
1. Faulty ignitions:
wIncorrect timing
wFouled, shorted or improperly gapped plugs
wOpen or crossed high±tension cords
wCracked distributor cap
2. Incorrect valve clearance
3. Leaky EGR valve
4. Leaky intake and exhaust valves
5. Leaky cylinder
1. Restricted air filter
2. Faulty MFI/SFI systems
wFaulty pressure regulator
wClogged fuel return line
wDefective engine coolant temp. sensor
wDefective intake air temp. sensor
wFaulty ECM
wFaulty injector
wFaulty throttle position sensor
wMAP sensor 1. Vacuum leaks:
wPCV hose
wEGR valve
wIntake manifold
wThrottle body
w!AC valve
wBrake booster line
2. Lean mixture causing misfire
Rough idle
(Black smoke from exhaust) Rough idle
(Fluctuating HC reading) Rough idleProblems
Causes
Normal
High High High
HighLow
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5. CHECK CYLINDER COMPRESSION PRESSURE
(a) Insert a compression gauge into the spark plug hole.
(b) Fully open the throttle.
(c) While cranking the engine, measure the compression
pressure.
HINT: Always use a fully charged battery to obtain
engine speed of 250 rpm or more.
(d) Repeat steps
(a) through
(c) for each cylinder.
NOTICE: This measurement must be done in as short a
time as possible.
Compression pressure:
1,226 kPa (12.5 kgf/cm
. 178 psi) or more
Minimum pressure:
981 kPa (10.0 kgf/cm
, 142 psi)
Difference between each cylinder:
98 kPa (1.0 kgf/cm
. 14 psi) or less
COMPRESSION CHECK
HINT: If there is lack of power, excessive oil consump±
tion or poor fuel economy, measure the compression
pressure.
1. WARM UP AND STOP ENGINE
Allow the engine to warm up to normal operating
temperature.
2. DISCONNECT DISTRIBUTOR CONNECTOR(S)
3. DISCONNECT HIGH ±TENSION CORDS FROM
SPARK PLUGS
Disconnect the high ± tension cords at the rubber
boot.
DO NOT pull on the cords.
NOTICE: Pulling on or bending the cords may damage the
conductor inside.
4. REMOVE SPARK PLUGS
Using a 16 mm plug wrench, remove the spark plug.
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(e) If the cylinder compression in one or more cylinders is
low, pour a small amount of engine oil into the cylin±
der through the spark plug hole and repeat steps (a)
through
(c) for cylinders with low compression.
wIf adding oil helps the compression, chances are
that the piston rings and/or cylinder bore are
worn or damaged.
wIf pressure stays low, a valve may be sticking or
seating is improper, or there may be leakage past
the gasket.
6. REINSTALL SPARK PLUGS
Using a 16 mm plug wrench, install the spark plug.
Torque: 18 N±m (180 kgf±cm, 13 ft±lbf)
7. RECONNECT HIGH±TENSION CORDS TO SPARK
PLUGS
8. RECONNECT DISTRIBUTOR CONNECTOR(S)
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11. REMOVE SPARK PLUGS
(a) Disconnect the high ± tension cords at the rubber
boot.
DO NOT pull on the cords.
NOTICE: Pulling on or bending the cords may damage the
conductor inside.
13. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley and align its groove with
timing mark ª0º of the No.1 timing belt cover. 12. REMOVE NO.2 TIMING BELT COVER
Remove the 5 bolts, timing belt cover and 2 gaskets.10. REMOVE No.2 ENGINE MOUNTING BRACKET
Remove the 3 bolts and mounting bracket.
(b) Using a 16 mm plug wrench, remove the spark plug.
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9. INSTALL CAMSHAFT TIMING PULLEY
(a) Align the camshaft knock pin with the knock pin
groove of the pulley, and slide on the timing pulley.
(b) Using SST, install the plate washer and bolt.
SST 09249 ± 63010 and 09278 ± 54012
Torque: 37 N±m (380 kgf±cm, 27 ft±lbf)
HINT: Use a torque wrench with a fulcrum length of
340 cm (13.39 in.)8. INSTALL CRANKSHAFT PULLEY
(a) Align the pulley set key with the key groove of the
pulley, and slide on the pulley.
(b) Using SST, install the pulley bolt.
SST 09213±54015 (91651 ±60855)
09330±00021
Torque: 108 N±m (1,100 kgf±cm, 80 ft±lbf)
10. SET No.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley, and align its groove with
timing mark ª0º of the No.1 timing belt cover. 7. INSTALL NO.1 TIMING BELT COVER
(a) Install the gasket to the timing belt cover.
(b) Install the timing belt cover with the 4 bolts. 6. INSTALL TIMING BELT GUIDE
Install the guide, facing the cup side outward.
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13. INSTALL NO.2 TIMING BELT COVER
(a) Install the 2 gaskets to the No. 1 and No.2 belt covers.
(b) install the belt cover with the 5 bolts.
(c) Align the 2 clamps of the engine wire with cover
mounting bolts. (d) w/ Green Tension Spring:
Slowly turn the crankshaft pulley 1 and 7/8 revolu±
tions, and align its groove with the mark at 45
BTDC
(for No.1 cylinder) of the No.1 timing belt cover.
NOTICE: Always turn the crankshaft clockwise.
(c) Check that each pulley aligns with the timing marks as
shown in the illustration..
If the timing marks do not align, remove the timing
belt and reinstall it. (b) Turn the crankshaft pulley 2 revolutions from TDC to
TDC.
NOTICE: Always turn the crankshaft clockwise.
(e) Torque the mounting bolt of the No.1 idler pulley.
Torque: 42 N±m (425 kgf±cm, 31 ft±lbf)
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CYLINDER HEAD
COMPONENTS FOR REMOVAL AND
INSTALLATION
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