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" (shift selector lever to "P" range for A/T model), and set parking brake and block drive wheels.
3. Remove ignition coil assemblies and all spark plugs.
WARNING: Failure in disconnecting couplers from ignition coil assemblies, can cause spark to occur in engine room possibly resulting in a dangerous explosion.
4. Disconnect fuel injector wire harness at couplers.
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.
8. Carry out steps 5) through 7) on each cylinder to obtain four readings.
9. After checking, connect couplers to fuel injectors securely and install spark plugs and ignition coil assemblies.