check engine TOYOTA CAMRY V20 1986 Service Information

COMPRESSION CHECK
HINT: If there is lack of power, excessive oil consumption or
poor fuel economy, measure the compression pressure.
1. WARM UP AND STOP ENGINE
Allow the engine to warm up to normal operating tempera-
ture.
2. DISCONNECT COLD START INJECTOR CONNECTOR
3. DISCONNECT DISTRIBUTOR CONNECTOR
4. REMOVE SPARK PLUGS (See page IG±6 or 11)
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 pres-
sure.
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 in as short a time
as possible.
Compression pressure:
12.5 kg±cm
2 (178 psi, 1,226 kPa) or more
Minimum pressure:
10.0 kg/cm
2 (142 psi, 981 kPa)
Difference between each cylinder:
1.0 kg/cm
2 (14 psi, 98 kPa) or less
(e) if the cylinder compression in one or more cylinders is low,
pour a small amount of engine oil into the cylinder through
the spark plug hole and repeat steps (a) through (e) for cyl-
inders with low compression.
wIf adding oil helps the compression chances are that the pis-
ton rings and/or cylinder bore are worn or damaged.
wIf pressure stays low, a valve may be sticking or seating is im-
proper, or there may be leakage past the gasket.
6. REINSTALL SPARK PLUGS (See page IG±7 or 11)
Torque: 180 kg±cm 0 3 ft±Ib, 18 N±m)
7. RECONNECT DISTRIBUTOR CONNECTOR
8. RECONNECT COLD START INJECTOR CONNECTOR
± ENGINE MECHANICALCompression CheckEM±22

(a) Loosen the mount bolt of the No. 1 idler pulley and shift
the pulley toward the left as far as it will go, tempo-
rarily tighten it.
(b) Remove the timing belt from the camshaft tinning
pulley. 14. REMOVE TIMING BELT FROM CAMSHAFT TIMING
PULLEY
HINT: If reusing the timing belt, place the matchmarks on
the timing belt and camshaft timing pulley.
15. REMOVE CAMSHAFT TIMING PULLEY
Using SST, remove the bolt, plate washer and pulley.
SST 09278±54012
16. REMOVE CRANKSHAFT PULLEY
(a) Using SST, remove the pulley mount bolt.
SST 09213±54015 (09214±00030) and 09330±00021 (b) Check that the hole of the camshaft timing pulley is aligned
with the alignment mark of the bearing cap.
If not, turn the crankshaft one revolution (360
°).
EM3334
± ENGINE MECHANICALTiming Belt (3S±FE)EM±25

INSPECTION OF TIMING BELT COMPONENTS
1. INSPECT TIMING BELT
NOTICE:
wDo not bend, twist or turn the timing belt inside out.
wDo not allow the timing belt to come into contact with
oil, water or steam.
wDo not utilize timing belt tension when installing or
removing the mount bolt of the camshaft timing pulley.
If there are any defects as shown in the figures, check
the following points:
(a) Premature parting
wCheck for proper installation.
wCheck the timing cover gasket for damage and proper
installation. 21. REMOVE CRANKSHAFT TIMING PULLEY
If the pulley cannot be removed by hand, use two screwdriv-
ers.
HINT: Position shop rags as shown to prevent damage.
22. REMOVE OIL PUMP PULLEY
Using SST, remove the nut and pulley.
SST 09616±30011
(b) If the belt teeth are cracked or damaged, check to see
if either the camshaft, water pump is locked.
EM3338
± ENGINE MECHANICALTiming Belt (3S±FE)EM±27

3. INSPECT TENSION SPRING
(a) Measure the free length of tension spring.
Free length: 46.1 mm (1.815 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:
6.0 ± 7.0 kg (13.2 ± 15.4 Ib, 59 ± 69 N±m)
at 50.5 mm (1.988 in.)
If the installed tension is not as specified, replace the ten-
sion spring. (e) If there is noticeable wear on the belt teeth, check tim-
ing cover for damage and check for correct gasket
installation. Check for foreign material on the pulley
teeth.
If necessary, replace the timing belt. (c) If there are cracks or noticeable wear on the belt face,
check to see if there are nicks on the side of the idler
pulled lock.
2. INSPECT IDLER PULLEYS
Check the turning smoothness of the idler pulley.
If necessary, replace the idler pulley. (d) If there is wear or damage on only one side of the belt,
check the belt guide and the alignment of each
pulley.
± ENGINE MECHANICALTiming Belt (3S±FE)EM±28

INSTALLATION OF TIMING BELT
(See page EM±23)
1. INSTALL OIL PUMP PULLEY
(a) Align the cutouts of the pulley and shaft, and slide the
pulley.
(b) Using SST, install and torque the nut.
SST 09616±30011
Torque: 290 kg±cm (21 ft±Ib, 28 N±m)
4. TEMPORARILY INSTALL NO.1 IDLER PULLEY AND
TENSION SPRING
(a) Install the pulley with the bolt. Do not tighten the bolt yet.
(b) Install the tension spring.
(e) Pry the pulley toward the left as far as it will go and tighten
the bolt.
5. TEMPORARILY INSTALL TIMING BELT
NOTICE: The engine should be cold.
Install the timing belt on the crankshaft timing, oil pump,
No±2 idler and water pump pulleys.
HINT: If reusing the timing belt, align the points marked dur-
ing removal, and install the belt with the arrow pointing in
the direction of engine revolution.3. INSTALL NO.2 IDLER PULLEY
(a) Install the pulley with the bolt. Torque the bolt.
Torque: 425 kg±cm (31 ft±Ib, 42 N±m)
(b) Check that the pulley moves smoothly.
HINT: Remove any oil or water on the idler pulley and keep it
clean.2. INSTALL CRANKSHAFT TIMING PULLEY
Align the pulley set key with the key groove of the pulley,
and slide the pulley.
± ENGINE MECHANICALTiming Belt (3S±FE)EM±29

(b) Using SST, turn the camshaft, and align the hole of the
camshaft timing pulley with the matchmark of the
bearing cap.
SST 09278±54012
11. INSTALL TIMING BELT
HINT: If reusing the timing belt, first align the rnatchmarks of
the timing belt and camshaft timing pulley.
(b) Turn the crankshaft pulley two revolutions from TDC to
TDC.
HINT: Always turn the crankshaft clockwise. Install the timing belt, insure that there is tension be-
tween the crankshaft timing pulley, water pump pulley
and camshaft timing pulley.
12. CHECK VALVE TIMING
(a) Loosen the No. 1 idler pulley mount bolt 1/2 turn.
± ENGINE MECHANICALTiming Belt (3S±FE)EM±31

(b) (2WD)
Install the mounting insulator to the mounting bracket
and body, and temporarily install the mounting insula-
tor bolt, four nuts and mounting stay bolt (A). Torque
the mounting insulator bolt and four nuts. Do not
torque the mounting stay bolt (A) yet.
Torque:
Bolt 650 kg±cm (47 ft±lb, 64 N±m)
Nut To bracket 530 kg±cm (38 ft±lb, 52 N±m)
To body 900 kg±cm (65 ft±11b, 88 N±m)
14. INSTALL SPARK PLUGS (See page IG±7)
Torque: 180 kg±cm (13 ft±lb, 18 N±m)
15. INSTALL ENGINE RH MOUNTING INSULATOR AND
BRACKET
(a) Install the bracket with the three bolts. Torque the bolts.
Torque: 530 kg±cm (38 ft±ib, 52 N±m)
13. INSTALL NO±2 TIMING BELT COVER
(a) Install the two gaskets to the No. 1 and No.2 belt covers.
(b) Install the belt cover with the five bolts. (c) Check that each pulley aligns with the timing marks as
shown in the figure.
If the marks do not align, remove the timing belt and
reinstall it.
(d) Torque the mount bolt of the No.1 idler pulley.
Torque: 425 kg±cm (31 ft±Ib, 42 N±m)
± ENGINE MECHANICALTiming Belt (3S±FE)EM±32

9. SLIGHTLY JACK UP ENGINE
Raise the engine enough to remove the weight from the en-
gine mounting on the right side.
10. REMOVE ENGINE RH MOUNTING INSULATOR
(a) (w/ A.B.S..)
Remove the clamp bolts of the PS oil cooler pipes.
(b) Remove the bolt, four nuts and mounting insulator.
11. REMOVE SPARK PLUGS (See page IG±11)
14. IF RE±USING TIMING BELT, CHECK INSTALLATION
MARKS ON TIMING BELT
Check that there are four installation marks on the timing belt
by turning the crankshaft pulley as shown in the illustration.
If the installation marks have disappeared, place a new
installation mark on .the timing belt before removing each
part.8. REMOVE ENGINE RH MOUNTING STAYS
(a) Remove the three bolts and No.1 mounting stay.
(b) Remove the bolt, nut and No.2 mounting stay.
12. REMOVE NO.2 TIMING BELT COVER
Remove the eight bolts, timing belt cover and gasket.
13. REMOVE ENGINE RH MOUNTING BRACKET
Remove the three bolts and mounting bracket.
± ENGINE MECHANICALTiming Belt (2VZ±FE)EM±35

17. REMOVE TIMING BELT FROM CAMSHAFT TIMING
PULLEY
HINT (Re±using timing belt): If the installation marks have
disappeared, before removing the timing belt, place new
instillation marks on the timing belt to match the timing marks
of the camshaft timing pulleys.
(a) Using SST, loosen± the tension between the LH and
RH camshaft timing pulleys by slightly turning the RH
camshaft timing pulley clockwise.
SST 09278±54012 15. SET NO.1 CYLINDER TO TDCI COMPRESSION
(a) Turn the crankshaft pulley and align its groove with the timing
mark º0º of the No.1 timing belt cover.
(b) Check that timing marks of the camshaft timing
pulleys and No±3 timing belt cover are aligned.
If not, turn the crankshaft one revolution (360
°).
16. REMOVE TIMING BELT TENSIONER
Remove the two bolts, tensioner and dust boot.
± ENGINE MECHANICALTiming Belt (2VZ±FE)EM±36

22. REMOVE CRANKSHAFT PULLEY
(a) Using SST, remove the pulley bolt.
SST 09213±54014 (Body),
90213±70010 (90105±08076 (Bolt)) and 09330±00021
HINT (Re±using timing belt): When the crankshaft pulley
bolt is loosened, the position of the timing mark of the
crankshaft pulley and also the installation mark may slip,
so check and align them again.
23. REMOVE NO. 1 TIMING BELT COVER
Remove the four bolts, timing belt cover and gasket. (b) Using SST, remove the pulley.
SST 09213±60017
24. REMOVE TIMING BELT GUIDE
± ENGINE MECHANICALTiming Belt (2VZ±FE)EM±38