2014 - Mazda6 - Engine

POSITIVE CRANKCASE VENTILATION (PCV) VALVE [SKYACTIV-G 2.5]

Purpose, Function

• Prevents release of blow-by gas (unburnt gas) into the atmosphere.

• The PCV valve is open/closed by the intake manifold vacuum.

Construction

• The PCV valve is installed to the oil separator.

  

• The PCV valve consists of a spring and valve.

  

Operation

• When the valve is pulled by the intake manifold vacuum, blow-by gas flows to the intake manifold.

  

• Blow-by gas flow amount is adjusted by the spring according to the intake manifold vacuum.