Liberty 4WD L4-2.4L DOHC VIN 1 (2005)
Positive Crankcase Ventilation Valve: Description and Operation
The 2.4L 4-cylinder engine is equipped with a closed crankcase ventilation system and a Positive Crankcase Ventilation (PCV) valve.
PCV Valve Location - 2.4L
PCV Valve And O-ring - 2.4L
This system consists of:
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a PCV valve attached to the left/front side of the valve cover. It is secured with 1 bolt. An O-ring is used to seal valve to valve cover.
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the air cleaner housing
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tubes and hoses to connect the system components.
The PCV system operates by engine intake manifold vacuum. Filtered air is routed into the crankcase through the air cleaner hose and crankcase
breather(s) (if used). The metered air, along with crankcase vapors, are drawn through the PCV valve and into a passage in the intake manifold. The PCV
system manages crankcase pressure and meters blow-by gases to the intake system, reducing engine sludge formation.
The PCV valve contains a spring loaded plunger. This plunger meters the amount of crankcase vapors routed into the combustion chamber based on
intake manifold vacuum.