Toyota 3S-GE Repair Manual page 60

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ENGINE — ENGINE MECHANICAL
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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.
\Q\ (d) Repeat steps (a) through (c) for each cylinder.
Gauge NOTICE: This measurement must be done in as short a
time as possible.
Compression pressure:
1,324 kPe (13.5 kgf/cm', 192 psi) or more
Minimum pressure:
1,079 kPe (11.0 kgf/cm'. 156 psi)
Difference between each cylinder:
98 kPa (1 .0 kgf/cm', 14 psi) or less
(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.
0 If adding oil helps the compression, it is likely that
\§~\ the piston rings and/or cylinder bore are worn or
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damaged.
0 If pressure stays low, a valve may be sticking or
seating is improper, or there may be leakage past
the gasket.
6. REINSTALL SPARK PLUGS
SST Using SST, install the 4 spark plugs.
SST 09155-16100
Torque: 18 N-m (180 kgf-cm. 13 ft-lbf)
7. RECONNECT HIGH—TENSION CORDS TO SPARK
PLUGS
Connect the 4 high—tension cords to the spark plugs.
(b) Install the high—tension cord clamp with the 3 bolts.
8. RECONNECT DISTRIBUTOR CONNECTOR