如果它堵了，可以導致漏油等大問題。
隻要$12。在有些車上極其容易換，比如Sienna， 就在發動機最上麵，眼皮底下。
A PCV (positive crankcase ventilation) valve regulates the flow of gases from the engine's crankcase into the intake manifold, preventing harmful vapors from building up and being released into the atmosphere. If the valve fails, common symptoms include rough idling, increased oil consumption, engine oil leaks, and a check engine light. A clogged PCV valve can also lead to internal engine sludge, so regular checks and replacement, typically around every 30,000 miles, are important for engine health.
