Glossary / General

PCV

8 Episode Mentions

Too Afraid to Ask

PCV is a small valve that lets the gases from inside the engine’s crankcase flow back into the air intake. It helps keep the engine clean and running smoothly.

Technical Definition

PCV stands for Positive Crankcase Ventilation, a system that recirculates gases from the engine’s crankcase back into the intake to reduce emissions and maintain proper pressure.

Hear It Discussed

"And things like the fuel filter gets clogged [977.9s] or the PCV is all gunked up"
Hoovie is Here! What is Mercedes Thinking? New Manual BMW M3! Gullwing Issues! THIS CAR POD! with Doug DeMuro & Friends! 16:17

"it it took on that little whistle where the pcv is built into the intake so i took it to my mechanic of 30 years and he replaced all that got rid of the whistle"
How to Save Money on Car Repairs: Advice from Auto Experts Under The Hood show 47:06

"it sounds like you know what you're doing to the point that cars have to have some way for a PCV right you got to vent the crankcase it's got a breathe but it's it's got to be a meter or"
Ron Ananian, The Car Doctor - December 20, 2025 - Hour 2 - The Night Before Christmas (855)560-9900 Ron Ananian The Car Doctor 20:45