Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > F30 / F31 / F32 / F33 (2012 - current)

F30 / F31 / F32 / F33 (2012 - current)
The sixth generation 3 series, chassis code F30. 2013 model year 328i and 335i sedans now in production. Read the F30 frequently asked question thread for all your basic question and dive into all the details in the ultimate F30 information thread.

Reply
 
Thread Tools Display Modes
  #1  
Old 04-07-2014, 10:55 PM
bimmerfestfan bimmerfestfan is offline
Registered User
Location: SoCal
 
Join Date: Jan 2014
Posts: 73
Mein Auto: 428i M Sport
428i: What causes "burning smell" after spirited driving?

I put her on "Sport" mode and floored it a couple of time with revs reaching 6k or so. When I got back to my garage, I noticed the typical "burning smell" that happens after hard driving. What causes this "burning smell"? Burnt off carbon deposit from city driving?

Last edited by bimmerfestfan; 04-08-2014 at 12:12 AM.
Reply With Quote
Advertisement
  #2  
Old 04-08-2014, 01:28 AM
HFW003's Avatar
HFW003 HFW003 is offline
Officially Welcomed to the 'Fest
Location: Australia
 
Join Date: Mar 2013
Posts: 211
Mein Auto: 2013 Havana 328I
Could be the brakes, they do get quite hot and emit a nasty smell!
__________________
Currently - Havana 328 Modern Line, Pro Nav, Xenons, HK sound, sports seats, VSS, adaptive suspension, 19" 401's and other bits and pieces.

Ride - 2013 Denim Black Nightrod Special with V&H Black Widow slip ons.
Reply With Quote
  #3  
Old 04-08-2014, 01:33 AM
bimmerfestfan bimmerfestfan is offline
Registered User
Location: SoCal
 
Join Date: Jan 2014
Posts: 73
Mein Auto: 428i M Sport
But then I was easy on the brakes. I floored it from 0-60 (PSL) and then just let it coast to the next red light or corner and then floored it again. Rinse and repeat.
Reply With Quote
  #4  
Old 04-08-2014, 07:17 AM
carzaddict carzaddict is offline
Officially Welcomed to the 'Fest
Location: Brooklyn
 
Join Date: Aug 2013
Posts: 144
Mein Auto: 328 x-drive
burnt carbon is most likely the case. brakes would be next
__________________
2013 328i X-Drive, M-Sport, tech, cold weather, PCD, Backup Cam, Sports Auto Transmission (coded), Launch Control (Coded) - BMS Stage 1
2012 Jaguar XJL
Reply With Quote
  #5  
Old 04-08-2014, 10:04 AM
Zeichen311's Avatar
Zeichen311 Zeichen311 is offline
Lost but making good time
Location: Here, there or in transit
 
Join Date: Mar 2011
Posts: 2,467
Mein Auto: '11 335xi Sedan
Hot lubricants.
__________________
2011 335xi Individual 6MT - Azurite Black Metallic / Oyster & Black / Anthracite Maple + all the good stuff

   N47 35' 30.13" E11 10' 33.36" - End of break-in...you can guess what came next. BMW CCA
Reply With Quote
  #6  
Old 04-08-2014, 04:06 PM
ebs0712 ebs0712 is offline
Officially Welcomed to the 'Fest
Location: Utah
 
Join Date: Oct 2007
Posts: 118
Mein Auto: 2014 3 Series Wagon (F31)
If your car is newish it could simply be the burning of the paint on the exhaust system. When driven "harder" in sport mode it probably caused more exhaust heat.
__________________
2008 328xi 6sp
2014 328xi Wagon (F31)
BMW CCA #257
Reply With Quote
  #7  
Old 04-08-2014, 06:29 PM
pointandgo's Avatar
pointandgo pointandgo is offline
bimmerfest Supporting Member
Location: Los Angeles area
 
Join Date: Apr 2010
Posts: 4,784
Mein Auto: '13 F10 535i (loaner)
Quote:
Originally Posted by ebs0712 View Post
If your car is newish it could simply be the burning of the paint on the exhaust system. When driven "harder" in sport mode it probably caused more exhaust heat.
I agree.

Even after aggressive track driving with my former cars (M3, etc.) I don't recall any "burning" odor after leaving the track (this would have alarmed me) other than normal brake heating...and I was in the BMW CCA "A" run group in high temp. desert conditions (Buttonwillow, CA).

A new car would be inclined to do this...all sorts of "burn off" odors.
__________________
F30 328i
E90 328i
E92 335i 6MT
E46 M3 6MT
E39 528i 5MT
MBz W140 S320
MBz W124 300E (slammed)
(unmentionables in between)
'71 AMC Javelin (4-Spd Stick on the floor)
'67 Pontiac Firebird 'cabrio' (1st car - "the leaker")
------------------------------------------------------------------------
Member: BMW CCA

Last edited by pointandgo; 04-08-2014 at 06:30 PM.
Reply With Quote
  #8  
Old 04-08-2014, 10:40 PM
bimmerfestfan bimmerfestfan is offline
Registered User
Location: SoCal
 
Join Date: Jan 2014
Posts: 73
Mein Auto: 428i M Sport
Quote:
Originally Posted by ebs0712 View Post
If your car is newish it could simply be the burning of the paint on the exhaust system. When driven "harder" in sport mode it probably caused more exhaust heat.
My car only has around 1700 miles. I noticed the carpet lining of the trunk feels noticeably warmer after harder driving. So it must be from the exhaust system.

I noticed the oil temperature runs a tick higher too on Sport mode. I've heard the M-Sport package gives better cooling. Does it have a better oil cooler or just more aggressive front end design that gives better air flow to assist the cooling?
Reply With Quote
  #9  
Old 04-08-2014, 11:40 PM
inChargeOfIT inChargeOfIT is offline
Registered User
Location: Austin, TX
 
Join Date: Jan 2013
Posts: 17
Mein Auto: 2013 335i
It's likely sulfur smells coming from your exhaust and is normal. Sulfur rich fuels (try a different gas station) could cause it, and the amount of sulfur in the fuel varies state to state, but it's likely just normal smells from your new catalytic converter. As your catalytic converter 'ages' the smells should soften up.

Fuel additives, software tuning that alters the fuel/air mixture, and catless/high flow catted downpipes, etc can also greatly increase the 'rotten egg' type smells. If the smells happen frequently (under normal driving conditions), and you have burned through a tank or two of gas from a different stations, you may want to take it in and have it checked out as it could indicate a bad cat.

However, if the smells resemble burnt plastic or burning oil you should have it checked out. I had a car go up in flames because a fog light came out of its socket and melted the bumper area.
Reply With Quote
  #10  
Old 04-09-2014, 01:04 AM
bimmerfestfan bimmerfestfan is offline
Registered User
Location: SoCal
 
Join Date: Jan 2014
Posts: 73
Mein Auto: 428i M Sport
It smelt like semi-burnt toast. The kind of smell you get from heated oven.

Last edited by bimmerfestfan; 04-09-2014 at 01:17 AM.
Reply With Quote
  #11  
Old 04-09-2014, 03:33 PM
raqautle raqautle is offline
Registered User
Location: New York
 
Join Date: Apr 2013
Posts: 85
Mein Auto: 2011 E90 328xi
Quote:
Originally Posted by bimmerfestfan View Post
I noticed the oil temperature runs a tick higher too on Sport mode. I've heard the M-Sport package gives better cooling. Does it have a better oil cooler or just more aggressive front end design that gives better air flow to assist the cooling?

I believe it's both and a bigger coolant tank but I'm not a 100% sure.
__________________
My primary car: 2014 F32 435i xDrive MSport
Secondary car: 2012 F10 528xi Luxury Line
Reply With Quote
  #12  
Old 04-10-2014, 10:17 AM
madhotm3 madhotm3 is online now
Officially Welcomed to the 'Fest
Location: NY
 
Join Date: Aug 2011
Posts: 119
Mein Auto: '05E46-M3; '12F12-650i
428i: What causes "burning smell" after spirited driving?

Quote:
Originally Posted by inChargeOfIT View Post
It's likely sulfur smells coming from your exhaust and is normal. Sulfur rich fuels (try a different gas station) could cause it, and the amount of sulfur in the fuel varies state to state, but it's likely just normal smells from your new catalytic converter. As your catalytic converter 'ages' the smells should soften up.



Fuel additives, software tuning that alters the fuel/air mixture, and catless/high flow catted downpipes, etc can also greatly increase the 'rotten egg' type smells. If the smells happen frequently (under normal driving conditions), and you have burned through a tank or two of gas from a different stations, you may want to take it in and have it checked out as it could indicate a bad cat.



However, if the smells resemble burnt plastic or burning oil you should have it checked out. I had a car go up in flames because a fog light came out of its socket and melted the bumper area.


what he said ... very well explained!



Quote:
Originally Posted by bimmerfestfan View Post
It smelt like semi-burnt toast. The kind of smell you get from heated oven.


I'd say you should take it in and have the dealer check it out.

Last edited by madhotm3; 04-10-2014 at 11:23 AM.
Reply With Quote
  #13  
Old 04-10-2014, 11:17 AM
chiefneil's Avatar
chiefneil chiefneil is offline
Officially Welcomed to the 'Fest
Location: Phoenix
 
Join Date: May 2011
Posts: 1,059
Mein Auto: 2014 335i, 2002 330i
Quote:
Originally Posted by bimmerfestfan View Post
My car only has around 1700 miles. I noticed the carpet lining of the trunk feels noticeably warmer after harder driving. So it must be from the exhaust system.

I noticed the oil temperature runs a tick higher too on Sport mode. I've heard the M-Sport package gives better cooling. Does it have a better oil cooler or just more aggressive front end design that gives better air flow to assist the cooling?
There's an extra radiator in the m-sport - I forget if it's for oil or coolant though.
__________________
Current Stable: 2014 335i M-Sport // 2012 X5 35i Premium // 2002 330i Sport
Out to Pasture: 2002 X5 3.0i // 1995 325i Sport

Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > F30 / F31 / F32 / F33 (2012 - current)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 12:46 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms