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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 326 (Engine Mechanical - 3.0L (LGY) - Repair Instructions) >> Repair Instructions >> Intake Manifold Replacement >> Intake Manifold Cleaning Procedure

Intake Manifold Cleaning Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove any remaining gasket and/or gasket material from the following:
    • Throttle body
    • Intake manifold
  2. Clean the following intake manifold areas in solvent.
    • Intake manifold gasket sealing areas
    • Intake manifold passages
    • Brake booster hose passage
    • Evaporative emission (EVAP) solenoid passage
    • Positive crankcase ventilation (PCV) vacuum hose passages
    3. WARNING:

    Refer to Safety Glasses Warning .

  3. Dry the intake manifold and throttle body with compressed air.
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