Vacuum leak??? I think:-/

[Yukie dookie]

So I take my truck in to have a ISS put on to rid that infamous clunk and I pick my truck up from the shop which is not even a mile away clunk is gone so happy wit that I park it, next day I get in and immediately I notice the hiss inside the cabin On my way to wrk and once I get on the xway I hear the sprew when I hit the gas my guess is it's a leak I'm no mechanic obviously so my ? Is could that be it and if so what could they have touched or removed while changing the steering shaft that would could cause this jus would like to know what to look for or where to look before I take back and blame these guys for something that may have jus failed btw no codes and does not drive weird and it does have an
CAI but I've chkd hose clamps at tb and seem good I'm stomped guys thanks for your help....

 

[Yukie dookie]

Any known leaks on the vacuum rail???

 

[Yukie dookie]

Ttt

 

[ccapehartusarmyINF.(ret)]

you hear hissing inside the vehicle?
do you smell coolant? anywhere

 

[Yukie dookie]

There's a hiss inside no coolant smell.....

---------- Post added at 03:02 AM ---------- Previous post was at 03:01 AM ----------

There's a small tiny hose on the rail seems it's coming from there not sure tho

 

[Yukie dookie]

I also hear a quick spew of air when I hit the gas pedal.