Tribeca F6-3.6L (2008)
Compression Check: Testing and Inspection
Compression
INSPECTION
CAUTION: After warming-up, engine becomes very hot. Be careful not to burn yourself during measurement.
1) After warming-up the engine, turn the ignition switch to OFF.
2) Make sure that the battery is fully charged.
3) Release the fuel pressure.
4) Remove all the spark plugs.
5) Check the starter motor for satisfactory performance and operation.
6) Hold the compression gauge tightly against the spark plug hole.
NOTE: When using a screw-in type compression gauge, the screw should be less than 18 mm (0.71 in) long.
7) Fully open the throttle valve.
8) Crank the engine by the starter motor, and read the maximum value on the gauge when the needle of gauge is steady.
9) Perform at least two measurements per cylinder, and make sure that the values are correct.
Compression (350 rpm and fully open throttle):
Standard: 1,275 - 1,471 kPa (13.0 - 15.0 kgf/cm2, 185 - 213 psi)
Service limit: 1,128 kPa (11.5 kgf/cm2, 164 psi)
