Knocking noise on B7 2.0T (Video)

[phil.]

Hi all, I have had my car for about 3 weeks now and have started to notice a knocking noise coming from the rear of the engine were the fire wall is.
The symptoms are..
When I touch my finger on it, it stops?
When the car warms up the sound disappears
The hose jumps up and down
It’s very lowed when cold

I have uploaded a video
http://s188.photobucket.com/albums/z319/phi11_/?action=view&current=AudiKnockingNoise.mp4

Dose anyone know what this is, do i need a new one? Or can I fix it.
I can put a cable tie around the hose and it stops the noise but I don’t want to just be covering up a problem.

My car is a 06 A4 Sline 2.0T B7.. (with 164.000 Miles )

Thanks for the help

[a8 tech]

you have problems my friend and it needs more than a cable tie

the Exhauster pump appears damaged and possible inlet camshaft and chain plus tensioner

[phil.]

you have problems my friend and it needs more than a cable tie

the Exhauster pump appears damaged and possible inlet camshaft and chain plus tensioner

Oh dear.. that don't sound good.. what do you think i shuld do?

What is the unit that the hose comes out of called?

Thanks

[a8 tech]

brake exhauster, needs stripping but fear the worst as the exhauster pump is driven by the inlet cam

[phil.]

brake exhauster, needs stripping but fear the worst as the exhauster pump is driven by the inlet cam

Ok so what dose the brake exhauster do and do you know why it would make that sound and stop when i touch the pipe?

Thanks

[a8 tech]

assist brake vacuum pressure for the brake servo, so if the pipe brakes away you lose the servo assist and crash

[phil.]

assist brake vacuum pressure for the brake servo, so if the pipe brakes away you lose the servo assist and crash

Corrr its all bad news aye lol..
Glad i asked now.. was just going to bodge it up.
Sometimes the sound stops when i put the clutch down?

What do you think i shuld do? what would you do?
Thanks

[a8 tech]

get it fixed lol

[phil.]

get it fixed lol

Lol i was thinking more like what shuld i change? can i just bolt on a new peice of will it need to go to a garage? Thanks

[a8 tech]

Remove the unit and inspect the the inlet camshaft cut out for damage, the exhauster is driven by the cam so it could be damaged or it could just be the exhauster itself