Guys,

have any of you with Inline 6 M104 Engine (c280-C36) has experience hissing noise after you turn off the engine.
This noise came from between the engine blok and behing the radiotor.


I just heard it today when I washed my car, so I thought normal since I just drove it a while ago.

But I just check again.
after the car sitting in the garage for about 4 hr
..the hissing noise still there..
it sounded like a basket ball/tires with small puncture losing air..

It just happened today (never have the noise before, I am sure of it)





Anyone has any clue..????



Regardz,


J Irwan

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97 C36 ////AMG