G424F(FE) Service Manual Chapter 3. Engine Mechanical System 52
PCV Valve
Outline and Operation Principle
Engine condition No operating Engine condition At idle or deceleration
PCV valve No operating PCV valve Full operating
Vacuum path Clogged Vacuum path Small
Engine condition Proper operating Engine condition High speed and overload
PCV valve Proper operating PCV valve Light operating
Vacuum path Big Vacuum path Very big
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