2000 TOYOTA CAMRY check engine

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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14. REMOVE TIMING BELT FROM CAMSHAFT TIMING
PULLEY
HINT (When re±using timing belt): Place the match±
marks on the timing belt and camshaft timing pulley,
and place matchmark on timing belt to match the end
of the No.1 timing belt cover.
15. REMOVE CAMSHAFT TIMING PULLEY
Using SST, remove the bolt, plate washer and timing
pulley.
SST 09249±63010 and 09278±54012(b) Check that the hole of the camshaft timing pulley is
aligned with the timing mark of the bearing cap.
If not, turn the crankshaft one revolution (360'*).
(a) Loosen the mounting bolt of the No.1 idler pulley and
shift the pulley toward the left as far as it will go, and
temporarily tighten it.
(b) Remove the timing belt from the camshaft timing
pulley.
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HINT (When re±using timing belt): After loosening
the crankshaft pulley bolt, check that the timing belt
matchmark aligns with the end of the No. 1 timing belt
cover when the crankshaft pulley groove is aligned
with the timing mark ª0º of the No. 1 timing belt cover.
If the matchmark does not align, align as follows:
When matchmark is misaligned counterclockwise:
wAlign the rnatchmarks by pulling the timing belt up
on the No.1 idler pulley side while turning the
crankshaft pulley clockwise. When matchmark is misaligned clockwise:
wAlign the matchmark by pulling the timing belt up
on the water pump pulley side while turning the
crankshaft pulley counterclockwise.
wAfter aligning the matchmark, hold the timing
belt, turn the crankshaft pulley clockwise, and
align its groove with timing mark ª0º of the No.1
timing belt cover. 16. REMOVE CRANKSHAFT PULLEY
(a) Using SST, remove the pulley bolt.
SST 09213±54015 (91651± 60855),
09330±00021
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wDo not utilize timing belt tension when installing or
removing the mounting bolt of the camshaft timing
pulley.
If there are any defects as shown in the illustration,
check the following points:
(a) Premature parting
wCheck for proper installation.
wCheck the timing cover gasket for damage and
proper installation.
(b) If the belt teeth are cracked or damaged, check to see
if either camshaft or water pump is locked.
(e) If there is noticeable wear on the belt teeth, check the
timing cover for damage, correct gasket installation,
and for foreign material on the pulley teeth.
If necessary, replace the timing belt. (c) If there is noticeable wear or cracks on the belt face,
check to see if there are nicks on the side of the idler
pulley lock.
(d) If there is wear or damage on only one side of the belt,
check the belt guide and the alignment of each pulley.
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3. INSPECT TENSION SPRING
(a) Measure the free length of tension spring.
Free length:
46.0 mm (1.811 in.)
If the free length is not as specified, replace the
tension spring.
(b) Measure the tension of the tension spring at the
specified installed length.
Installed tension (at 50.5 mm (1.988 in.)):
Green color
32 ± 37 N (3.25 ± 3.75 k9f, 7.2 ± 8.3 lbf)
Silver color
47 ± 52 N (4.75 ± 5.25 kgf, 10.5 ± 11.8 lbf)
If the installed tension is not as specified, replace the
tension spring.
TIMING BELT INSTALLATION
(See Components for Removal and Installation)
1. INSTALL OIL PUMP PULLEY
(a) Align the cutouts of the pulley and shaft, and slide on
the pulley. 2. INSPECT IDLER PULLEYS
Check that the idler pulley turns smoothly.
If necessary, replace the idler pulley.
(b) Using SST, install the nut.
SST 09616 ± 30011
Torque: 28 N±m (290 kgf±cm, 21 ft±lbf)
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4. TEMPORARILY INSTALL NO.1 IDLER PULLEY AND
TENSION SPRING
(a) Install the pulley with the bolt. Do not tighten the bolt
yet.
HINT: Use a bolt 42 mm (1.65 in.) in length.
(b) Install the tension spring.
(c) Pry the pulley toward the left as far as it will go and
tighten the bolt.
(d) Check that the idler pulley moves smoothly.
5. TEMPORARILY INSTALL TIMING BELT
NOTICE: The engine should be cold.
(a) Using the crankshaft pulley bolt, turn the crankshaft
and position the key groove of the crankshaft timing
pulley upward.
(b) Remove any oil or water on the crankshaft pulley, oil
pump pulley, water pump pulley, No. 1 idler pulley, No.
2 idler pulley and keep them clean.
(c) Install the timing belt on the crankshaft timing pulley,
oil pump pulley, No.1 idler pulley, water pump pulley
and No.2 idler pulley.
HINT (When re±using timing belt): Align the points
marked during removal, and install the belt with the
arrow pointing in the direction of engine revolution. 2. INSTALL CRANKSHAFT TIMING PULLEY
(a) Align the timing pulley set key with the key groove of
the pulley.
(b) Slide on the timing pulley, facing the flange side
inward.
3. INSTALL NO.2 IDLER PULLEY
(a) Install the pulley with the bolt.
Torque: 42 N±m (425 kgf±cm, 31 ft±lbf)
HINT: Use a bolt 35 mm (1.38 in.) in length.
(b) Check that the idler pulley moves smoothly.
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11. INSTALL TIMING BELT
HINT. (When re±using timing belt):
wCheck that the matchmark on the timing belt
matches the end of the No.1 timing belt cover.
If the matchmark does not align, shift the meshing of
the timing belt and crankshaft timing pulley until they
align. (See page EG1±29)
(a) Remove any oil or water on the camshaft timing
pulley, and keep it clean.
(b) Install the timing belt, and check the tension between
the crankshaft timing pulley and camshaft timing
pulley. (b) Using SST, turn the camshaft, and align the hole of
the camshaft timing pulley with the timing mark of the
bearing cap.
SST 09278±54012
wAlign the matchmarks of the timing belt and
camshaft timing pulley.
12. CHECK VALVE TIMING
(a) Loosen the No.1 idler pulley bolt 1/2 turn.
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