Compression Check: Testing and Inspection

Main Fuel Location:

Compression Test:

Compression Test:

Tool Required: J 22794 Compression Gage Adapter.

1. Start engine and allow it to reach normal operating temperature.

2. Shut engine off.

3. Remove all three spark plugs and disconnect coil wire from ignition coil.

4. Remove 15A fuse from main relay.

5. Install a J 22794 compression gage adapter and a compression gage into a spark plug hole.

6. Disengage the clutch (manual transaxle equipped vehicles) to lighten starting load on the engine and depress the accelerator pedal to the floor (wide-open throttle).

7. Crank engine with a fully charged battery.

Measure
- The highest pressure reading on the compression gage. Standard compression pressure is 1,400 kPa (199 psi) at 400 rpm.
- Minimum allowable compression pressure is 1,100 kPa (156.4 psi) at 400 rpm.

8. Repeat compression test procedures for remaining two cylinders.

Measure:
- The maximum allowable compression pressure difference between any two cylinders is 100 kPa (14.2 psi) at 400 rpm.

9. Remove the J22794 compression gage adapter and compression gage from the engine.

10. Install all three spark plugs and connect the coil wire to the ignition coil.

11. Install 15A fuse to main relay.