ok so today, i got out of my car. and i have a turbo timer so my car stays running for a while.. during that time i heard this loud hissing. almost like a popped tire.. i was like wth is that my tires were fine. it was coming from the engine bay. so i popped the hood and checked around. then my engine turned off and the hissing was gone... so i started it back up and check around.. it was coming from above the throttle body. i think it was some kind of valve that has a little nipple thing on the under side that was sucking in air.. is that normal or should i replace it.. i took a picture of it. its kinda dark but you get the picture

 

bump..

 

can you post a slighty smaller and clearer pic and circle the hose pls? try duct taping what it is if you can reach it

 

done.

looks like the PCV valve..

 

i have a 2.8 so idk much about ur car but maybe a [vacuum]hose got loose and came off the nipple.... so look a round or something idk im just guessin lol

 

heres a pic of that valve



theres nothing connected to the bottom nipple. should there be? its very loud and makes me think my tire is popped

 

ya common, problem. either replace it or tape the **** out of it lol. you can usually feel the air where it's leaking so you can find it easily

 

its sucking in air through the bottom line... i was talking to some 1 else and he said there should be a hose connected to it.. i just looked in my engine bay for a loose hose and didnt see anything

 

oh so i was right!! ?

 

o there's a hose missing? there should be a hose connected. look harder and pull things around a bit. you'll find it, if not have someone else take a look. plug it up in the mean time. you don't want dirt in the system