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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.0L (LTG) - Repair Instructions - Off Vehicle >> Repair Instructions - Off Vehicle >> Intake Manifold Cleaning and Inspection

Intake Manifold Cleaning and Inspection

    Fig 1: Intake Manifold
    GM2742607Courtesy of GENERAL MOTORS COMPANY
  1. Clean the intake manifold (1) mating surfaces.
  2. Inspect the intake manifold for damage.
  3. Inspect the intake manifold for cracks near metallic inserts.
    4. Fig 2: Crankcase Ventilation Passages
    GM2742608Courtesy of GENERAL MOTORS COMPANY
  4. Inspect the crankcase ventilation passages (1) in the intake manifold face for blockage.
    5. WARNING:

    Refer to Safety Glasses Warning .

  5. Clean the crankcase ventilation passages with compressed air if necessary. Use a maximum of 172 kPa (25 psi) of air pressure.
  6. Replace the intake manifold as necessary.
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