I bought a can of Seafoam Deep Creep to spray in my '95 4Runner since it's got a rough idle and the can of Deep Creep is supposed to help remove the builtup carbon deposits and hopefully fix my rough idle problem or at least improve it. The Seafoam Deep Creep website states "With engine warm, keep on high idle and spray through vacuum lines that feed all cylinders. I also found an instructional video clip from the makers of Deep Creep at the following website:

http://videos.streetfire.net/search/...6600e99b6f.htm

The man in the instructional video says to "spray directly into the intake manifold via the booster hose that goes to the brake", he then says it's also a vacuum hose. I took 3 pics of my engine and posted them below. I'm hoping someone could point out which hose I should be spraying the Deep Creep in.

 

Any of the small vacuum lines that feed into the throttle body will be sufficient

 

Brake booster line.

In the middle photo, in the top right corner (roughly) is your master cyclider. The bigger vacuum hose with the clamp on it is the one that goes from the master cylinder left.