LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Mechanical - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Engine Compression Test >> Measurement Procedure

Measurement Procedure

WARNING: This page is about a different variant/trim than selected.
    WARNING:

    Refer to Eye Protection Warning .

    CAUTION:

    Do not add oil to any cylinder during a compression test as extensive engine damage may result.

    NOTE:

    A second technician is required.

  1. Check the compression of cylinder 1:
    1. Turn the ignition ON, with the engine OFF.
    2. Using the vehicle starter motor to crank the engine.
    3. Observe the gauge and note the reading as the compression test is being performed.
  2. Repeat the procedure for all remaining cylinders.
  3. Compare the compression value of all cylinders.
  4. The minimum compression in any cylinder is 1800 kPa (261 psi). There should not be more than 10 percent difference between a suspect cylinder and the average compression of all 6 cylinders.
  5. If one or more cylinders fails to meet the specified compression range, refer to Cylinder Leakage Test  to find the leakage.
scientia non olet · About LEMON Manuals