F31 330d 10/2012 loud hissing on medium load

Simon89 · 09-29-2020, 03:02 AM

I've noticed since having had my EGR replaced it has quietened down.

Maxgo · 02-12-2021, 04:30 PM

Hello all, just bought a 430D GC with 90K on it. Coming from a 330D E90 first thing I noticed was the hissing sound while medium load, looks like something is blowing air, have checked/retight everything, replace the Preformed seal that comes in into the turbo and the ones that comes out. No change in sound. Boost till 23 PSI and stays stable, no errors... I have to say that the sound it's exatly as video the initial post. Looks more like a "sucking air" instead of "Blowing", I recorded this, and you can ear at the end that the hissing sound abruts stop.

https://youtu.be/qgOUUVYFQMg

Did anybody discover/solve this "issue"???

09-29-2020, 03:02 AM	#23
Simon89 First Lieutenant 96 Rep 328 Posts Drives: F30 330D XDrive Join Date: Oct 2018 Location: York iTrader: (0)	I've noticed since having had my EGR replaced it has quietened down. __________________ 13' F30 330D XDrive
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02-12-2021, 04:30 PM	#24
Maxgo New Member 2 Rep 10 Posts Drives: BMW 430D Gran Coupe Join Date: Feb 2021 Location: Spain iTrader: (0)	Hello all, just bought a 430D GC with 90K on it. Coming from a 330D E90 first thing I noticed was the hissing sound while medium load, looks like something is blowing air, have checked/retight everything, replace the Preformed seal that comes in into the turbo and the ones that comes out. No change in sound. Boost till 23 PSI and stays stable, no errors... I have to say that the sound it's exatly as video the initial post. Looks more like a "sucking air" instead of "Blowing", I recorded this, and you can ear at the end that the hissing sound abruts stop. https://youtu.be/qgOUUVYFQMg Did anybody discover/solve this "issue"???
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