LEMON Manuals: Even more car manuals for everyone
Home >> Honda >> 2001 >> Odyssey Cargo >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 3.5L V6 Engine >> Cylinder Head >> 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 ACGS (15A) fuse from the under-hood fuse/relay box.
  4. Start the engine and let it run until it stalls.
  5. Remove the six ignition coils (see IGNITION COIL REMOVAL/INSTALLATION ).
  6. Remove the six spark plugs.
  7. Attach the compression gauge to a spark plug hole.
    Fig 1: Attaching Compression Gauge To Spark Plug Hole
    G01505081Courtesy 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.

    Compression Pressure Above 930 kPa (9.5 kgf/cm 2  ,135 psi) 

  10. Perform the same measurement on the remaining cylinders.

    Maximum Variation: Within 200 kPa (2.0 kgf/cm 2  .28 psi) 

  11. If the compression is not within specifications, check the following items, then re-measure the compression.
    • Damaged or worn valves and seats
    • Damaged cylinder head gasket
    • Damaged or worn piston rings
    • Damaged or worn piston and cylinder bore
scientia non olet · About LEMON Manuals