When your car is running, just on park. Under the hood on the passenger side by the break liquid container, around that area I hear a hiss. As like air coming out of it. Do you guys have that too? I'm just checking wether mine is normal or not.

 

Sounds like a brake booster leak. Buy a can of carb cleaner and spray gently around that area while the car is idling. When the car misses, you've found the leak.

 

I definitely meant driver side btw, and that's what I'm always thinking it is but ill try again and again to see if it is. Btw if you have a leak does air only get sucked in? Or is there a leak that air gets pushed out too?

 

Spray soapy water on all the vacuum lines and see if bubbles form.

 

Its a break booster leak for sure. Its an obvious sound. For locating air leaks I discovered a great way to locate air leaks.

1) Jar with lid
2) Two small hoses/tubes
3) Insert two tubes into the lid. You blow air into one, air travels into jar and out the lid into second tube. The jar simple acts as a tank.
4) Light a few incense and place in jar, blow them out, close lid and blow and smoke will come out of the other tube.
You can use cigarettes or cigars too but if your not a smoker this works great so you dont inhale!

 

This is good stuff, ronster. thanks