Glossary / General

PCV valve

8 Episode Mentions

Too Afraid to Ask

The PCV valve lets the engine’s waste gases go back into the air intake instead of leaking out. This keeps the engine cleaner and helps it run better.

Technical Definition

The Positive Crankcase Ventilation (PCV) valve recirculates blow‑by gases from the engine crankcase back into the intake system, reducing emissions and preventing oil contamination.

Hear It Discussed

"...you got to check that PCV system too. You got a PCV valve for it and replace that."
Car Questions Live and Loosing Your Collection in a Fire Under The Hood show 21:39

"What I see is cumulative ... sticking cam phasers, getting noisy sledge accumulation in certain areas of valve covers and cylinder heads that just star of oil PCV valve systems..."
Ron Ananian, The Car Doctor - May 16, 2026 - Hour 2 Ron Ananian The Car Doctor 08:42

"...my uncle did the PCV valve in it and that kind of curbed the oil consumption problem. But it was they got it down to a half the court. Well, motor let's go."
The Car Show with Dane Donovan - 1/17/2026 The Car Show with Dale and Dane Donovan 22:05