Diagnosis Positive Crank Case Ventilation (PCV) System

Always Perform a Visual Check of the PCV System:
^ Properly mounted PCV valve (firmly seated in grommet on rocker arm cover)
^ PCV Hose, grommet, fresh air hose, and clamps in place (no damage to PCV hose, rocker arm cover grommet, fresh air hose). Make sure the clamps are on tight.