Camry Wagon V6-180.5 2959cc 3.0L DOHC (3VZ-FE) (1993)
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/cm2. 178 psi) or more
Minimum pressure: 981 kPa (10.0 kgf/cm2, 142 psi)
Difference between each cylinder: 98 kPa (1.0 kgf/cm2, 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 cylinder through the spark plug hole and
repeat steps (a) through (c) for cylinders with low compression.
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If adding oil helps the compression chances are that the piston rings and/or cylinder bore are worn or damaged.
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If pressure stays low, a valve may be sticking or seating is improper, or there may be leakage past the gasket.
7. REINSTALL SPARK PLUGS
Using a 16 mm plug wrench, install the spark plug.
TORQUE: 18 Nm (180 kgf.cm, 13 ft.lb).
8. RECONNECT HIGH-TENSION CORDS TO SPARK PLUGS
9. REINSTALL V-BANK COVER
Using a 5 mm hexagon wrench, install the V-bank cover with the two nuts.
10. RECONNECT DISTRIBUTOR CONNECTOR