RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
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two interconnected breathers threaded into the rear of each cylinder head.
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tubes and hoses to connect the system components.
5.9L
This engine is equipped with a closed crankcase ventilation system and a positive crankcase ventilation (PCV) valve.
Fig. 11 PCV Value/Hose - 5.9L
This system consists of a PCV valve mounted on the cylinder head (valve) cover with a hose extending from the valve to the intake manifold.
Another hose connects the opposite cylinder head (valve) cover to the air cleaner housing to provide a source of clean air for the system. A
separate crankcase breather/filter is not used.
Fig. 12 Typical Closed Crankcase Ventilation System
The PCV system operates by engine intake manifold vacuum. Filtered air is routed into the crankcase through the air cleaner hose. 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
