E92 Fresh Air Intake position?

Bmw330 · 01-29-2019, 12:53 AM

Could anyone point me to the position of the fresh air intake position on an E92 (n57), got a odd smell thats recently started which seems to be noticeable when parked up with engine on (engine warm), but disappears when moving. (This is with air con off). No visible oil/coolant leaks from engine or gearbox, and can’t seem to locate the same smell with bonnet up, almost smells like Gas in the vents !

rasa bmw · 01-29-2019, 06:11 AM

when is the last time pollen filter was changed?

Bmw330 · 01-29-2019, 06:28 AM

Is that the microfilter?, if so on 20th Dec.

Chappers 71 · 01-30-2019, 01:10 PM

Did u fit a carbon filter? The first time I changed mine I didn’t know any better & fitted a standard filter & noticed a ‘fumey’ kinda smell in the cabin. Changed it for an activated carbon filter & never had the smell again. Apart from when the VCG was leaking bit that was a oily smell.

Bmw330 · 01-30-2019, 03:03 PM

It was just the std filter, I did see the carbon ones but assumed they probably wouldn’t work!, so you can recommend the carbon ones are a good option. might be worth a purchase, I notice Bosch ones are about £20, genuine bmw are about £60, probably no difference?

Chappers 71 · 01-30-2019, 05:02 PM

It's worth giving it a go, before fitting the carbon filter I definitely got traffic fumes in the cabin when in stationary trafic.
Bosch currently on ECP for £12.24 with Discount code, it's what I've been fitting in mine.

Silver Streek · 01-31-2019, 10:46 AM

With E9x is there a second filter inside the dash somewhere as well as the pollen filter in the engine bay at the bottom of the windscreen.
Apologies if this is a stupid question!!

Bmw330 · 02-02-2019, 11:05 AM

Purchased a carbon activated micro filter on the off chance it would work, unfortunately not. Had all the plastic undershirts removed, no leaks st all, no leaks from engine bay area oddly you can’t smell the smell in the engine.

Tried a odour bomb, didn’t work, rather frustrating!

Phil325i · 02-03-2019, 03:13 AM

Quote:

Originally Posted by Silver Streek

With E9x is there a second filter inside the dash somewhere as well as the pollen filter in the engine bay at the bottom of the windscreen.
Apologies if this is a stupid question!!

Not that I'm aware of. That's the first I've heard of it, if there is. If you discover one, let us know its location and part number!

Chappers 71 · 02-03-2019, 07:00 AM

Have you had the undertray off to check for oil leaks?

Bmw330 · 02-03-2019, 07:10 AM

All trays been off, no leaks anywhere, everything bone dry. Had all the microfilter ducting off, nothing smells in that area.

The only thing I did see was a few specs of what’s probably diesel around the fuel filter, (recently changed at bmw) so cleaned that off, smell still remains.

Is there any vent pipes behind the engine which exit near the fresh air inlet?

Might just give the whole area a thorough clean and see what happens, I was hoping for something obvious ....

01-29-2019, 12:53 AM	#1
Bmw330 Second Lieutenant 19 Rep 227 Posts Drives: Bmw 330d Join Date: Aug 2018 Location: Uk iTrader: (0)	E92 Fresh Air Intake position? Could anyone point me to the position of the fresh air intake position on an E92 (n57), got a odd smell thats recently started which seems to be noticeable when parked up with engine on (engine warm), but disappears when moving. (This is with air con off). No visible oil/coolant leaks from engine or gearbox, and can’t seem to locate the same smell with bonnet up, almost smells like Gas in the vents ! Last edited by Bmw330; 01-29-2019 at 02:23 AM..
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01-29-2019, 06:11 AM	#2
rasa bmw Colonel 243 Rep 2,026 Posts Drives: 640d sport/f31 330d x drive Join Date: Jul 2017 Location: northumberland iTrader: (0)	when is the last time pollen filter was changed?
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01-29-2019, 06:28 AM	#3
Bmw330 Second Lieutenant 19 Rep 227 Posts Drives: Bmw 330d Join Date: Aug 2018 Location: Uk iTrader: (0)	Is that the microfilter?, if so on 20th Dec.
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01-30-2019, 01:10 PM	#4
Chappers 71 Major General 5455 Rep 5,419 Posts Drives: Beige G31 40ix m sport Join Date: Feb 2016 Location: Kent, The Garden of England iTrader: (0) Garage List 2018 G31 xdrive 40i ... [4.00] 2006 E92 335i SE [9.50]	Did u fit a carbon filter? The first time I changed mine I didn’t know any better & fitted a standard filter & noticed a ‘fumey’ kinda smell in the cabin. Changed it for an activated carbon filter & never had the smell again. Apart from when the VCG was leaking bit that was a oily smell. __________________ G31 40ix M Sport E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle
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01-30-2019, 03:03 PM	#5
Bmw330 Second Lieutenant 19 Rep 227 Posts Drives: Bmw 330d Join Date: Aug 2018 Location: Uk iTrader: (0)	It was just the std filter, I did see the carbon ones but assumed they probably wouldn’t work!, so you can recommend the carbon ones are a good option. might be worth a purchase, I notice Bosch ones are about £20, genuine bmw are about £60, probably no difference? Last edited by Bmw330; 01-30-2019 at 03:13 PM..
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01-30-2019, 05:02 PM	#6
Chappers 71 Major General 5455 Rep 5,419 Posts Drives: Beige G31 40ix m sport Join Date: Feb 2016 Location: Kent, The Garden of England iTrader: (0) Garage List 2018 G31 xdrive 40i ... [4.00] 2006 E92 335i SE [9.50]	It's worth giving it a go, before fitting the carbon filter I definitely got traffic fumes in the cabin when in stationary trafic. Bosch currently on ECP for £12.24 with Discount code, it's what I've been fitting in mine. __________________ G31 40ix M Sport E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle Last edited by Chappers 71; 01-30-2019 at 05:16 PM..
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01-31-2019, 10:46 AM	#7
Silver Streek Lieutenant 119 Rep 597 Posts Drives: 325d E91 Join Date: Feb 2018 Location: The Moon iTrader: (0)	With E9x is there a second filter inside the dash somewhere as well as the pollen filter in the engine bay at the bottom of the windscreen. Apologies if this is a stupid question!!
	Appreciate 0 Quote

02-02-2019, 11:05 AM	#8
Bmw330 Second Lieutenant 19 Rep 227 Posts Drives: Bmw 330d Join Date: Aug 2018 Location: Uk iTrader: (0)	Purchased a carbon activated micro filter on the off chance it would work, unfortunately not. Had all the plastic undershirts removed, no leaks st all, no leaks from engine bay area oddly you can’t smell the smell in the engine. Tried a odour bomb, didn’t work, rather frustrating!
	Appreciate 0 Quote

02-03-2019, 07:00 AM	#10
Chappers 71 Major General 5455 Rep 5,419 Posts Drives: Beige G31 40ix m sport Join Date: Feb 2016 Location: Kent, The Garden of England iTrader: (0) Garage List 2018 G31 xdrive 40i ... [4.00] 2006 E92 335i SE [9.50]	Have you had the undertray off to check for oil leaks? __________________ G31 40ix M Sport E92 335i. E36 328is coupe E39 540i V8 6SP manual E34 3.6 M5. E34 525i sport. VW Jetta Mk2 GTI 16v. 1679cc 1967 resto-cal beetle
	Appreciate 0 Quote

02-03-2019, 07:10 AM	#11
Bmw330 Second Lieutenant 19 Rep 227 Posts Drives: Bmw 330d Join Date: Aug 2018 Location: Uk iTrader: (0)	All trays been off, no leaks anywhere, everything bone dry. Had all the microfilter ducting off, nothing smells in that area. The only thing I did see was a few specs of what’s probably diesel around the fuel filter, (recently changed at bmw) so cleaned that off, smell still remains. Is there any vent pipes behind the engine which exit near the fresh air inlet? Might just give the whole area a thorough clean and see what happens, I was hoping for something obvious ....
	Appreciate 0 Quote

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