LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2003 >> Vibe Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - System & Component Testing >> Emission Systems & Subsystems >> Positive Crankcase Ventilation >> Inspection/Diagnosis

Positive Crankcase Ventilation: Inspection/Diagnosis

WARNING: Do not breathe the air through the EVAP component tubes or hoses. The fuel vapors inside the EVAP components may cause personal injury.
  1. Blow air into the cylinder head side of the PCV valve.
  2. Check that air passes through the PCV valve easily.
  3. Blow air into the intake manifold side of the PCV valve.
  4. Check that air passes through the PCV valve with high resistances.
  5. If the PCV valve fails either test, replace the PCV valve.
scientia non olet · About LEMON Manuals