LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 87 (Engine Mechanical - 3.8L) >> Diagnostic Information and Procedures >> Crankcase Ventilation System Inspection/Diagnosis

Crankcase Ventilation System Inspection/Diagnosis

WARNING: This page is about a different car, the 2004 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Crankcase Ventilation System Inspection/Diagnosis

Concern Action
External oil leak Inspect for any of the following conditions:
  • Plugged positive crankcase ventilation (PCV) valve.
  • Plugged or kinked PCV hoses.
  • Damaged or incorrectly installed PCV valve or hoses.
  • Excessive crankcase pressure.
Rough Idle Inspect for any of the following conditions:
  • Plugged PCV valve.
  • Plugged or kinked PCV hoses.
  • Leaking or damaged PCV valve or hoses.
Stalling or slow idle speed Inspect for any of the following conditions:
  • Plugged PCV valve.
  • Plugged or kinked PCV hoses.
  • Leaking or damaged PCV valve or hoses.
High idle speed Inspect for a leaking or damaged PCV valve or hoses.
Sludge in the engine Inspect for any of the following conditions:
  • Plugged PCV valve.
  • Plugged or kinked PCV hoses.
scientia non olet · About LEMON Manuals