What is the vacuum at the back of the intake

[brianbaty]

Anyone care to explain what the vacuum unit under the intake at the back of the ka24e is. What does it do?

[180weaver]

think you need to be a little more descriptive on the location, could be the charcoal canister. There is a thread on here about emissions removal with some descriptions as to what is needed and what it is used for with some photos, search emissions removal and that should answers whatever q"s you have