DESCRIPTION
Closed crankcase ventilation systems usually consist of one or more of the following: PCV valve, oil separator, blow-by filter and connecting hoses. For illustrations of PCM systems, see appropriate figures in this article.
OPERATION & SERVICE PROCEDURES
All closed crankcase systems draw crankcase blow-by, vapors and gases into the combustion system rather than allowing it to escape to the atmosphere. Crankcase gases mix with air/fuel mixture and are burned in the combustion chamber. This is accomplished with one or more of the following components