Glossary / General

vacuum

21 Episode Mentions

Too Afraid to Ask

Vacuum is a kind of pressure that helps some car parts work, like making brakes easier to push.

Technical Definition

In automotive systems, vacuum refers to the pressure below atmospheric pressure that is used to power various components such as brake boosters and emissions controls.

Hear It Discussed

"And the engine is in vacuum at [1589.4s] the very bottom of the, the power band. So you can't do the thing where you give it no gas and [1595.9s] just engage the clutch from idle."
Driven: Kimera 037, GRP P39; Best Dad Wagons; Project Updates The Smoking Tire 26:29

"Okay, let's find out what the vacuum is make sure we've got enough vacuum to run that that engine What motor is it by the way?"
3D Printed Cars Classic Car Repairs and All Things Under The Hood Under The Hood show 04:18

"I pulled vacuum on the system and it pulled down into a perfect, beautiful thirty inches of vacuum... monitored it over the rest of the afternoon. Never saw that vacuum gauge move"
Ron Ananian, The Car Doctor - July 11, 2026 Hour 1 - The Double Whammy Jeep Air Conditioning Ron Ananian The Car Doctor 06:47