Reinstall Spark Plugs - Toyota 3VZ–FE Troubleshooting Manual

EG–28
ENGINE TROUBLESHOOTING
(d) Repeat steps (a) through (c) for each cylinder.
(e) If the cylinder compression in one or more cylinders is low,
7.
8.
9.
10. RECONNECT DISTRIBUTOR CONNECTOR
– ENGINE MECHANICAL
NOTICE: This measurement must be done in as short a
time as possible.
Compression pressure:
1,226 kPa (12.5 kgf/cm
Minimum pressure:
981 kPa (10.0 kgf/cm
Difference between each cylinder:
98 kPa (1.0 kgf/cm
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.
If adding oil helps the compression chances are that the
piston rings and/or cylinder bore are worn or damaged.
If pressure stays low, a valve may be sticking or seating is
improper, or there may be leakage past the gasket.

REINSTALL SPARK PLUGS

Using a 16 mm plug wrench, install the spark plug.
Torque: 18 N m (180 kgf cm, 13 ft lbf)
RECONNECT HIGH–TENSION CORDS TO SPARK
PLUGS
REINSTALL V–BANK COVER
Using a 5 mm hexagon wrench, install the V–bank cover with
the two nuts.
2
, 178 psi) or more
2
, 142 psi)
2
, 14 psi) or less