Compression Check: Testing and Inspection

INSPECT COMPRESSION
(a) Warm up and stop the engine.
(b) Remove cylinder head cover No. 2.
(c) Remove the 4 ignition coils.
(d) Remove the 4 spark plugs.
(e) Disconnect the 4 fuel injector connectors.





(f) Inspect the cylinder compression pressure.
(1) Insert a compression gauge into the spark plug hole.
(2) Fully open the throttle.
(3) While cranking the engine, measure the compression pressure.
Compression: 1,471 kPa (15.0 kgf/cm2, 213 psi)
Minimum pressure: 1,079 kPa (11.0 kgf/cm2, 156 psi)
Difference between each cylinder: 98 kPa (1.0 kgf/cm2, 14 psi) or less

NOTICE:
^ Use a fully-charged battery so the engine speed can be increased to 250 rpm or more.
^ Inspect the other cylinders in the same way.
^ Measure the compression in as short a time as possible.

(4) If the cylinder compression is low, pour a light coat of engine oil into the cylinder through the spark plug hole, then inspect it again.

HINT:
^ If adding oil increases the compression, the piston rings and/or cylinder bore may be worn or damaged.
^ If the pressure stays low, the valve may be stuck or seated improperly, or there may be leakage from the gasket.

(g) Connect the 4 fuel injector connectors.
(h) Install the 4 spark plugs.
Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)
(i) Install the 4 ignition coils.
(j) Install cylinder head cover No. 2.