Vacuum Hose

I'm going to use some Sea foam intake cleaner does anyone know the location of the vacuum hose?

why do you need to use seafoam?

pull the vacuum off the brake booster line..

My car used to be a rental car and I'm afraid its been driven a bit rough its only a year old and I want to make sure its gtg.

does it run? miss? or have a cel?

if you can say yes, no and no. then you probably need an oil change and spark plugs, not seafoam.