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Home >> Suzuki >> 1998 >> Sidekick JS 4D 2WD L4-1.6L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Compression Check >> Testing and Inspection
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Compression Check: Testing and Inspection

Check compression pressure on all four cylinders as follows:
1. Warm up engine.
2. Stop engine after warming up.

NOTE: After warming up engine, place transmission gear shift lever in "Neutral" (shift selector lever to "P" range for A/T model), and set parking brake and block drive wheels.





3. Remove all spark plugs.





4. Disconnect ECM fuse (Fl) from main fuse box.

WARNING: Failure in disconnecting ECM fuse (Fl) can cause spark to occur in engine room possibly resulting in a dangerous explosion.





5. Install special tool (Compression gauge) into spark plug hole.
Special Tool
(A): 09915-64510-001
(B): 09915-64510-002
(C): 09915-64530
(D): 09915-67010





6. Disengage clutch (to lighten starting load on engine) for M/T model, and depress accelerator pedal all the way to make throttle valve full-open.





7. Crank engine with fully charged battery, and read the highest pressure on compression gauge.

NOTE: For measuring compression pressure, crank engine at least 250 r/min by using fully charged battery.





8. Carry out steps 5) through 7) on each cylinder to obtain four readings.
9. After checking, connect ignition coil coupler securely and install spark plugs.
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