Tribute LX 2WD V6-3.0L DOHC (2001)
Positive Crankcase Ventilation: Description and Operation
The PCV system:
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uses intake manifold vacuum to ventilate blow-by fumes from the crankcase.
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returns the fumes to the intake manifold for combustion.
The PCV valve:
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varies the amount of blow-by gases returned to the intake manifold based on available engine vacuum.
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prevents the entry of combustion gasses backfiring into the crankcase.
The PCV system consists of:
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crankcase ventilation tube
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positive crankcase ventilation valve
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crankcase vent oil separator(2.0L Zetec only)
