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Section
8
Maintenance of Forced Ventilation Valve (PCV Valve) of
the Crankcase
PCV valve is composed of valve body, valve, valve cap and spring, which is decomposable.
Its main function is to guide the waste gas in the crankcase into intake manifold through PCV
valve and be burnt finally so as to avoid environmental pollution of waste gas in the crankcase,
remove it once every 10000 kilometers, wash and clean oil as well as dry it, then push its valve
with steel wire and to see if it is flexible. Replace with new valve if the valve is seized up or not
ventilated.
Chapter 4 Periodic Inspection the Petrol Engine
Section 1 Service Intervals and Maintenance Content of the Petrol Engine