[s-cars] intake manifolds emit any noise, wonder if I may have a leak

[forrest bradshaw]

last not I got out of the car to open garage, engine sounded kinda loud, no ticking it was more of a sshhhhh sound, pull into garage turn it off, few seconds later another sound like what you hear when you open a pop bottle, hmmm. Took it to car wash today so I could listen to the engine amplified off the concrete walls, I am not getting the sound anymore, but I do hear a hiss type sound around the intake manifold, this was more audible when I first started the car and listened, put my ear to the manifold and it sounded like air flowing through, could also hear by just standing in front of engine. 
is there any where in this area I should check for vacuum leak or air leak? or is this normal? 
thanks


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