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Home >> Honda >> 2003 >> Civic HX, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Overhaul - 1.7L Engine >> Engine Compression Inspection

Engine Compression Inspection

  1. Warm up the engine to normal operating temperature (cooling fan comes on).
  2. Turn the ignition switch OFF.
  3. Remove the air cleaner housing (see step 6 on Cylinder Head Removal  ).
  4. Disconnect all four injector connectors.
  5. Remove the four ignition coils (see IGNITION COIL REMOVAL/INSTALLATION ).
  6. Remove the four spark plugs.
  7. Attach the compression gauge to the spark plug hole.
    Fig 1: Attaching Compression Gauge To Spark Plug Hole
    G01401502Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Connect a tachometer.
  9. Open the throttle fully, then crank the engine with the starter motor and measure the compression.
    1. Compression Pressure:  Above 930 kPa (9.5 kgf/cm2 , 135 psi)
  10. Measure the compression on the remaining cylinders.
    1. Maximum variation:  Within 200 kPa (2.0 kgf/cm2 , 28 psi)
  11. If the compression is not within specifications, check the following items, then remeasure the compression.
    • Damaged or worn valves and seats
    • Damaged cylinder head gasket
    • Damaged or worn piston rings
    • Damaged or worn piston and cylinder bore
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