LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (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 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
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