im not sure if this is normal but when i turn my car off it sounds like a air leak coming from my brake booster area I'm not sure actually maby power steering but it could be making that noise while the engine is running too i wouldn't be able to hear it

it makes the noise for about 5 seconds after the car is off and then stops heres the link to the video.. might have to turn your volume up a little
https://www.facebook.com/photo.php?v...42027082894512

 

I had this leak a minute ago. Check the hose clamps on the lines to and from the booster to manifold. I tighten them all a bit and all gone. No more leak for me

 

nope doesnt seem like its those hoses.. its frustrating i cam hear it but cant fint it.. sounds like its coming from the master

 

found it coming from the bottem of the master and the brake booster

 

so what exactly is the problem the master?

 

or just a gasket?

number 3?

 

anyone?

 

help please?

 

could you be a little more specific with the pic as to where the leak is coming from. in your pic it looks like a massive crack below the MC.
If that is teh case i think you will need a new brake booster. or did you find the leak coming from right behind the MC where it bolts up to the brake booster?
if so then i would say it is not sealed properly. but the details area little vague.

please be a lil more clear. and specific

 

here looks like the booster is cracked

 

but i took a metal bruch and cleaned it up i think it was just rot rust crack it looks like a bad seal?

 

um, the master isnt sealed to the booster, thats a dust seal, the rubber piston seals in the booster are sealed inside, when you push on the brake, you push on the rod in the booster,which pushes another rod, that operates the master, if the booster failed, you will still brakes, the pushrod in the booster acts directly on the master pushrod

 

http://auto.howstuffworks.com/auto-p...wer-brake1.htm

 

ok im just trying to figure out why theres air leaking out of there

 

it's air possibly leaking in, there is no pressure in the booster, if the diaphragm is bad, air will try to make it's way back into the booster diaphragm, if you pull the master cylinder and see fluid where the rear seal on it is, then it's probably leaked into the booster, and ruined it.

 

Do you have an aftermarket intake?

 

what does that have to do with the booster? the booster is in bad enough shape to be cracking, the diaphrams inside of it are probably shot also

 

ok so what do i need a new booster?.. i replaced the master a couple years ago

 

so its a bad master again? thats wierd i replaced it a few years back

 

Replace the booster or eliminate it.

 

ok some people are tellin me to replace the master but u think i should replace the booster?

 

Usually when i shut the car off there's like a full second of hiss from my intake.