Compression Check: Testing and Inspection
Engine Compression Inspection1. Warm up the engine to normal operating temperature (cooling fan comes on).
2. Turn the ignition switch OFF.
3. Turn the battery module switch OFF.
4. Remove the engine cover.
5. Disconnect the three injector connector.
6. Remove the three ignition coils.
7. Remove the three spark plugs.
8. Attach the compression gauge to a spark plug hole.
9. Connect tachometer or Honda Diagnostic System (HDS).
10. Open the throttle fully, then crank the engine with the starter motor and measure the compression.
Compression Pressure: Above 880 kPa (9.0 kgf/cm2, 128 psi)
11. Do the same measurement on the remaining cylinders.
Maximum Variation: Within 200 kPa (2.01 kgf/cm2, 28 psi)
12. If the compression is not within specifications, check the following items, then remeasure the compression.
^ Damaged or worn valves and seals
^ Damaged cylinder head gasket
^ Damaged or worn piston rings
^ Damaged or worn piston and cylinder bore
13. Reset the ECM using the HDS.
14. Do the ECM idle learn procedure.