Crankcase Ventilation System Inspection_Diagnosis

Engine Mechanical - 3.0L LM2 Diesel | Diagnostic Information and Procedures | Document ID: 5138977 Crankcase Ventilation System Inspection/Diagnosis Crankcase Ventilation System Inspection/Diagnosis

Symptom	Correction
External oil leak	Inspect for any of the following conditions: Restricted or kinked PCV hose. Damaged, incorrect, or incorrectly installed PCV hose. Excessive crankcase pressure.
Rough Idle	Inspect for any of the following conditions: Restricted or kinked PCV hose. Leaking (damaged) PCV hose. Vacuum hoses worn or not properly installed.
Stalling or slow idle speed	Inspect for any of the following conditions: Restricted or kinked PCV hose. Leaking (damaged) PCV hose.
High idle speed	Inspect for a leaking (damaged) PCV hose.
Sludge in the engine	Inspect for restricted or kinked PCV hose.