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The PCV (Positive Crankcase Ventilation) valve helps
control pollution from your car by returning
crankcase fumes to the engine's intake manifold to
be
re-burned. Breather elements function similarly to
air filters, filtering outside air into the PCV
system. A clogged PCV valve or breather element
causes heavy
engine sludging, poor engine performance and
stalling.
These are warning signs of a PCV system malfunction:
Excessive Oil Consumption: Excessive oil consumption
can be caused by a clogged PCV breather element or a
bad PCV valve.
Air Filter Contamination: If the PCV valve is
clogged, crankcase pressure forces vapors up through
the breather element. When this happens, oil residue
is deposited in the air cleaner housing and
eventually contaminates the air filter.
Excessive Oil Leakage: When both the valve and
breather element become clogged, the crankcase is no
longer vented to the atmosphere. This causes the
crankcase pressure to increase and results in oil
leakage at gasket surfaces.
Rough Engine Idle: A PCV valve that does not close
properly will directly affect the air/fuel mixture
supplied by the carburetor. This can result in a
rough idle and hesitation.
As a part of our fSignature Service, we check your
car's PCV valve and breather element and replace
them for an additional cost. For best engine
performance,
they should be inspected regularly. Jiffy Lube
recommends replacing the PCV valve every 15,000
miles (based on severe driving conditions) and the
breather
element as needed. When in doubt, consult your
owner's manual for details. |
