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Engine Compression Test

Special Tools

    • EN-47632 Cleaning tool
    • EN-50453 Adaptor - Air Compression
    • EN-50454 Gauge - Cylinder Pressure

For equivalent regional tools, refer to Special Tools .

Removal Procedure

  1. Remove the engine sight shield. Refer to Engine Sight Shield Replacement .
  2. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection : without Start/Stop System .
  3. Remove the 4 fuel injection fuel feed pipes . Refer to Fuel Injection Fuel Feed Pipe Removal .
  4. Remove the 4 fuel injectors . Refer to Fuel Injector Removal .

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  6. Clean the injector sealing surfaces in the cylinder head using the EN-47632 cleaning tool (1) in following procedure:
  7. 5.1. Use the brush side to loosen the dirt.
    5.2. Use the sponge side to remove the dirt.

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  8. Remove the front compartment fuse block cover (1).
  9. Remove the fuel pump relay.

Compression Test Cylinder 1 - 4


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  1. Install EN-50453 adaptor (1) to cylinder 1.
  2. Install the fuel injector bracket (2).
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install fuel injector bracket bolt (3) and tighten to 14 N·m+110° (124 lb in) +110°.

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    Note: Use a gauge with a measuring range of 10-40 bar (145-580 PSI).

  6. Install the EN-50454 gauge (1) to the EN-50453 adaptor (3).
  7. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection : without Start/Stop System .
  8. Check the compression of cylinder 1.
  9. Note: A second technician is required.

  10. Start engine for approximately 4 seconds.
  11. Note: Engine speed at least 200 RPM.

  12. Note the compression value.
  13. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection : without Start/Stop System .
  14. Release pressure from the EN-50454 gauge (1) by pushing the release button (2).
  15. Remove the EN-50454 gauge (1) from the EN-50453 adaptor .

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  17. Remove the fuel injector bracket bolt (3).
  18. Remove the fuel injector bracket (2).
  19. Remove the EN-46791 adaptor (1) from cylinder 1.
  20. Repeat steps 1 to 13 to determine the compression of cylinders 2, 3, 4.

Installation Procedure

  1. Install the 4 fuel injectors . Refer to Fuel Injector Installation .
  2. Install the 4 fuel injection fuel feed pipes. Refer to Fuel Injection Fuel Feed Pipe Installation .

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  4. Install the fuel pump relay.
  5. Install the front compartment fuse block cover (1).
  6. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection : without Start/Stop System .
  7. Install the engine sight shield. Refer to Engine Sight Shield Replacement .
   


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