Tracker 4WD L4-1.6L VIN 6 (1998)
Compression Check: Testing and Inspection
A compression test must be performed in order to determine the cylinder compression pressure. A compression test is used to diagnose the valve or
pinion faults and poor engine operation. When checking the cylinder compression pressure the following must be present:
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The throttle must be wide-open.
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Remove all four of the spark plugs.
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The battery must be at or near full charge.
Test each cylinder four times.
TESTING PROCEDURES
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Tools Required
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J 39313 Spark Plug Port Adapter
IMPORTANT: Be certain to clean any dirt or debris from around the spark plug holes prior to removing spark plugs.
1. Turn the ignition switch to LOCK.
2. Remove the four spark plugs.
3. Disconnect the distributor electrical connector
4. Remove the F1 (15 amp) fuse from the fuse block.
5. Install a J 39313 and a compression gage into a spark plug hole.
6. Disengage the clutch on manual transmission equipped vehicles in order to lighten the starting load on the engine.
7. Depress the accelerator pedal to the to the floor for a wide open throttle.
8. Crank the engine, with a fully charged battery, in order to take four pressure readings.
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Measure the highest pressure reading on the compression gage.
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The standard compression pressure is 1,400 kPa (199 psi) at least 250 rpm.
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The minimum allowable compression pressure is 1,200 kPa (170 psi) at least 250 rpm.
