MartinWake

Hey everyone can someone please help me identify the hissing sound? Thanks I will post A YouTube link

stock abc

https://youtu.be/xhn-LqcAwzU

decorily

Help us help you!

A lot of noise there....not sure what I'm hearing!

Is the engine running?
Is the cooling fan running after the engine is shut off?

MartinWake

Hey, the engine is running and from the video I can hear the hiss its literally just a hissing sound, similar to when you have a little hole on a bike tire and the air is slowly coming out
I am not sure what it is the car stays up goes up really fast too.

decorily

If you shut off the engine does the hissing continue?

MartinWake

It goes away, I met up with a s55 same engine same abc stuff and his sounds the same.

MartinWake

Is this normal?

MartinWake

Okay so I don't remember exacly what thread I found some information on, (I was just googling some other problem) but it was a 2012 post and someone talked about the hissing sound they said its a nitrogen leak in the front accumulator or something like that and what happens it the nitrogen leaks out and it fills up with abc fluid and then the car rides kinda bouncy