Crankcase Ventilation System Inspection/Diagnosis. Cadillac Seville 2003

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2003 🢒 Seville 🢒 Engine 🢒 Engine Controls - 4.6L 🢒 Crankcase Ventilation System Inspection/Diagnosis

Concern

Action

External oil leak

Inspect for any of the following conditions:

•	Plugged positive crankcase ventilation (PCV) orifice tube.

•	Plugged or kinked PCV hoses.

•	Damaged or incorrectly installed PCV hoses.

•	Excessive crankcase pressure.

Rough Idle

Inspect for any of the following conditions:

•	Plugged PCV orifice tube.

•	Plugged or kinked PCV hoses.

•	Leaking or damaged PCV hoses.

Stalling or slow idle speed

Inspect for any of the following conditions:

•	Plugged PCV orifice tube.

•	Plugged or kinked PCV hoses.

•	Leaking or damaged PCV hoses.

High idle speed

Inspect for a leaking or damaged PCV hoses.

Sludge in the engine

Inspect for any of the following conditions:

•	Plugged PCV orifice tube.

•	Plugged or kinked PCV hoses.