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Cruze
   
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Engine Compression Test

Removal Procedure
  1. Remove the throttle body. Refer to Throttle Body Assembly Replacement .
  2. Remove the spark plugs. Refer to Spark Plug Replacement .
  3. Remove the relay holder cover.
  4. Remove the fuel pump relay.

Measurement Procedure

Compression, Check

    • Four cylinder

       Note: Engine revs at least 300/min.

    • Start the engine (approx. 4 seconds).
    • Compare the compression values.
        Maximum pressure differential 100 kPa (14.5 psi)

Installation Procedure
  1. Install the fuel pump relay.
    2. • Place into the socket.
    • Ensure the plug contacts are sound.
  2. Install the relay carrier cover.
  3. Install the spark plugs. Refer to Spark Plug Replacement .
  4. Install the throttle body. Refer to Throttle Body Assembly Replacement .
   


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