Compression Check: Testing and Inspection
Compression CheckCheck compression pressure on all 4 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 ignition coils and all spark plugs.
4. Disconnect fuel injector wire harness at the connector.
5. Install special tool (Compression gauge) into spark plug hole.
Special Tool
(A):09915-64512
(B):09915-64530
(C):09915-67010
6. Disengage clutch (to lighten starting load on engine) for M/T vehicle, and depress accelerator pedal all the way to make throttle fully 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.
^ If measured compression pressure is lower than limit value, check installation condition of special tool.
Compression pressure
Standard: 1400 kPa (14.0 kgf/cm2, 199.0 psi)
Limit: 1100 kPa (11.0 kgf/cm2, 158.0 psi)
Max. difference between any two cylinders: 100 kPa (1.0 kgf/cm2, 14.2 psi)
8. Carry out Steps 5) through 7) on each cylinder to obtain 4 readings.
9. After checking, install spark plugs and ignition coils.
10. Connect injector wire harness at connector.
11. Install air cleaner assembly.