Nissan Sentra manuals

Nissan Sentra Service Manual: Compression pressure

Inspection

  1. Warm up the engine to full operating temperature.
  2. Release fuel pressure. Refer to EC-143, "Work Procedure".
  3. Remove ignition coil and spark plug from each cylinder. Refer to EM-46, "Exploded View".
  4. Connect engine tachometer (not required in use of CONSULT).
  5. Install compression gauge (B) with an adapter (A) into spark plug hole.


(a) : 20 mm (0.79 in) or less


  1. With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge pointer stabilizes, read the compression pressure and the engine rpm. Perform these steps to check each cylinder.

Compression pressure : Refer to EM-118, "General Specification".

CAUTION:

Always use a fully charged battery to obtain the specified engine speed.

  1. After inspection is completed, install removed parts.
  2. Start the engine, and check that the engine runs smoothly.
  3. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-55, "Diagnosis Description".
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