Compression Check: Testing and Inspection
COMPRESSION CHECKCheck 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 (N) (shift selector lever to Park (P) range for A/T model), and set parking brake and block drive wheels.
3. Remove all spark plugs.
4. Disconnect Engine Control Module (ECM) fuse (F1) from main fuse box.
WARNING: Failure in disconnecting ECM fuse (F1) 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 or equivalent.
(B): 09915-64510-002 or equivalent.
(C): 09915-64530 or equivalent.
(D): 09915-67010 or equivalent.
6. Disengage clutch (to lighten starting load on engine) for Manual Transmission (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/minute by using fully charged battery.
Compression Pressure:
Standard: 1400 kPa (14.0 kg/cm2, 199.0 psi).
Limit: 1200 kPa (12.0 kg/cm2, 170.0 psi).
Maximum Difference Between Any Two Cylinders: 100 kPa (1.0 kg/cm2, 14.2 psi).
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.