GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Omega VE 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Crankcase Ventilation System Inspection/Diagnosis

Concern

Action

External oil leak.

Inspect for any of the following conditions:

    • Plugged positive crankcase ventilation (PCV).
    • Plugged or kinked PCV hose(s).
    • Damaged or incorrectly installed PCV or hose(s).
    • Above acceptable crankcase pressure.

Rough Idle.

Inspect for any of the following conditions:

    • Plugged PCV.
    • Plugged or kinked PCV hose(s).
    • Leaking (damaged) PCV or hose(s).

Stalling or slow idle speed.

Inspect for any of the following conditions:

    • Plugged PCV.
    • Plugged or kinked PCV hose(s).
    • Leaking (damaged) PCV or hose(s).

High idle speed.

Inspect for a leaking (damaged) PCV or hose(s).

Sludge in the engine.

Inspect for any of the following conditions:

    • Plugged PCV.
    • Plugged or kinked PCV hose(s).