RAV4 2WD V6-3.5L (2GR-FE) (2006)
Compression Check: Testing and Inspection
INSPECT COMPRESSION
a. Warm up and stop the engine.
NOTICE: A warmed up engine should have an engine coolant temperature of over 80°C (176°F) and an engine oil temperature of 60°C (140
°F), and the engine rpm should be stabilized.
b. Disconnect the injector connectors.
c. Remove the intake air surge tank.
d. Remove the 6 ignition coils.
e. Remove the 6 spark plugs.
f.
Inspect the cylinder compression pressure.
(1) Insert a compression gauge into the spark plug hole.
(2) While cranking the engine, measure the compression pressure.
HINT: Always use a fully charged battery to obtain an engine speed of 250 rpm or more.
NOTICE: The measurement must be done as quickly as possible.
Compression pressure: 1,400 kPa (14 kgf/cm2, 199 psi) or more
Minimum pressure: 980 kPa (10.0 kgf/cm2, 142 psi)
Difference between each cylinder: 100 kPa (1.0 kgf/cm2, 15 psi) or less
(3) Perform the inspection above for each cylinder.
(4) 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.
Then perform the first 3 steps under "Inspect the cylinder compression pressure" for the cylinders with low compression.
HINT:
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If adding oil helps the compression, it is likely that the piston rings and/or cylinder bore are worn or damaged.
^
If pressure stays low, a valve may be stuck or seated improperly, or there may be leakage in the gasket.
g. Install the 6 spark plugs.
h. Install the 6 ignition coils.
i.
Install the intake air surge tank.
j.
Connect the injector connectors.