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Home >> Saturn >> 2006 >> Vue Red Line, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 2.2L (L61)) >> Diagnostic Information and Procedures >> Cylinder Leakage Test >> Tools Required

Tools Required

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

J 35667-A  Cylinder Head Leakdown Tester or equivalent. See Special Tools .

IMPORTANT: A leakage test may be performed in order to measure cylinder/combustion chamber leakage. High leakage may indicate one or more of the following:
    CAUTION: Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.
  1. Disconnect the battery ground negative cable.
  2. Remove the spark plugs. Refer to Spark Plug Replacement in Engine Controls - 2.2L.
  3. Rotate the crankshaft to place the piston in the cylinder being tested at Top Dead Center (TDC) of the compression stroke.
  4. Install the J 35667-A  or equivalent. See Special Tools .
    5. IMPORTANT: It may be necessary to hold the crankshaft balancer bolt to prevent the engine from rotating.
  5. Apply shop air pressure to the J 35667-A  and adjust according to the manufacturers instructions. See Special Tools .
  6. Record the cylinder leakage value. Cylinder leakage that exceeds 25 percent in considered excessive and may require component service. In excessive leakage situations, inspect for the following conditions:
    • Air leakage sounds at the throttle body or air inlet hose that may indicate a worn or burnt intake valve or a broken valve spring.
    • Air leakage sounds at the exhaust system tailpipe that may indicate a worn or burnt exhaust valve or a broken valve spring.
    • Air leakage sounds from the crankcase, oil level indicator tube, or oil fill tube that may indicate worn piston rings, a damaged piston, a worn or scored cylinder bore, a damaged engine block or a damaged cylinder head.
    • Air bubbles in the cooling system may indicate a damaged cylinder head or a damaged cylinder head gasket.
  7. Perform the leakage test on the remaining cylinders and record the values.
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