Engine Compression Inspection: Inspection

NOTE:  After this inspection, you must reset the PCM. Otherwise, the PCM will continue to stop the injectors from operating.

1. Engine - Warm Up

   1. Enter the maintenance mode, then start the engine . Hold the engine speed at 3, 000 rpm with no load (in P or N) until the cooling fan comes on, then let it idle.

2. HDS DLC - Connect 
3. Ignition Coil and Spark Plug - Remove
4. Engine Compression - Inspect

   Courtesy of HONDA, U.S.A., INC.

   1. Attach a compression gauge to the spark plug hole. 2. Step on the accelerator pedal to open the throttle fully, then select ALL INJECTORS STOP in the PGM-FI INSPECTION menu with the HDS, and measure the compression. NOTE:  The engine will be driven by the motor when ALL INJECTORS STOP is selected with HDS. When measuring the pressure of other cylinders, make sure to stop ALL INJECTORS STOP first and replace the compression gauge and select ALL INJECTORS STOP again. Compression Pressure:  3. Measure the compression on the remaining cylinders. Maximum Variation:  4. If the compression is not within specifications, perform a cylinder leak down test to determine the problem area. Then check the following items, and remeasure the compression: Incorrect valve clearance  Confirmation of camshaft timing  Damaged or worn cam lobes Damaged or worn valves and seats Damaged cylinder head gasket Damaged or worn piston rings Damaged or worn piston and cylinder bore 5. Remove the compression gauge from the spark plug hole.

   Within 200 kPa (2.04 kgf/cm 2, 29.0 psi)

   Above 930kPa (9.48 kgf/cm 2, 134.9 psi)

5. All Removed Parts - Install

   1. Install the parts in the reverse order of removal.