Contents: Description ⇊ Examination ⇊
Description
The positive crankcase ventilation (PSV) is designed to prevent crankcase gases from entering the atmosphere. The PSV valve contains a spring-loaded plunger. When the engine is started, the plunger rises proportionally to the intake manifold vacuum and the crankcase gases are fed directly into the intake manifold.
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Examination
1. Check the PCV system hoses and connections for leaks and blockages.
2. Check that the PCV valve makes a clicking sound when idling and is lightly compressed (with fingers or tweezers) hose between the valve and the intake manifold.
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If there is no clicking sound, check the PCV valve gasket for damage. If the gasket is OK, replace the valve.