Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Arnott
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-03-2021, 02:16 AM
X5only's Avatar
Premier Member
 
Join Date: Feb 2008
Location: Bellevue, WA
Posts: 1,217
X5only is on a distinguished road
Strong burnt oil smell from exhaust but no smoke

My X5 emits a strong burnt oil smell from exhaust but no smoke from the exhaust. I replaced the valve stem seals awhile ago (N62 engine) and the vehicle stopped smoking, but the burnt oil smell from exhaust persists. The exhaust tips always look clean, nonetheless. It's not sulphur or gas stink, just burnt oil smell. I thought the stink would go away after some time upon replacing the seals but nada after more than a year. I miss the days my X5 exhaust smell was all clean. I've transitioned from the smoke of shame to the stink of shame .

Any ideas and pointers? I'm an avid DIY'er. I have the following parts ready to be installed - fuel filter, spark plugs and oxygen sensors. A few days ago I did an oil change and replaced the leaking oil pressure sensor. Please, don't tell me it's now the cats ...
__________________
'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.

Last edited by X5only; 06-03-2021 at 08:53 PM.
Reply With Quote

Sponsored Links

  #2  
Old 06-03-2021, 11:00 AM
Member
 
Join Date: Jan 2020
Location: PNW
Posts: 296
RocketyMan is on a distinguished road
So when I'm climbing up a hill for a couple miles and working the engine, I notice burnt oil smell too. I think it just warms everything up in the engine bay...I do know my reinforcement plate is just COVERED in oil/grime junk :/ so maybe that is leading to the smell.
__________________
2003 BMW X5 3.0 -- manual, 3.64s final gears, H&R lowering springs, K-Mac bushing kit
Reply With Quote
  #3  
Old 06-03-2021, 08:50 PM
X5only's Avatar
Premier Member
 
Join Date: Feb 2008
Location: Bellevue, WA
Posts: 1,217
X5only is on a distinguished road
Mine emits the stink from the exhaust only. Post exhaust is all good including the engine bay. It stinks anytime the engine is running and only from the exhaust end. I also don't have oil consumption issues. I'm wondering if this stink comes from residual oil when the vehicle had leaking valve stem seals and that oil is still gradually burning off . May be I should have thoroughly cleaned up the intake manifold when I did the VSS? But wouldn't burning oil result in smoke?
__________________
'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.

Last edited by X5only; 06-03-2021 at 08:57 PM.
Reply With Quote
  #4  
Old 06-04-2021, 02:23 PM
X5only's Avatar
Premier Member
 
Join Date: Feb 2008
Location: Bellevue, WA
Posts: 1,217
X5only is on a distinguished road
The engine may be running too rich. I got someone else to sniff and the conclusion is my nose is not very efficient I was told it's not really burnt oil smell but more like slight gas smell in the pungent exhaust odor. I'm replacing the spark plugs, O2 sensors and fuel filter. The condition of the spark plug should be revealing.
__________________
'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.
Reply With Quote
  #5  
Old 06-04-2021, 02:52 PM
Member
 
Join Date: Jan 2020
Location: PNW
Posts: 296
RocketyMan is on a distinguished road
Okay...so you mean burnt oil smell from strictly in/out the exhaust. So out the exhaust pipe in the rear. I thought you meant like in the engine bay.
__________________
2003 BMW X5 3.0 -- manual, 3.64s final gears, H&R lowering springs, K-Mac bushing kit
Reply With Quote
  #6  
Old 06-04-2021, 02:52 PM
Member
 
Join Date: Jan 2020
Location: PNW
Posts: 296
RocketyMan is on a distinguished road
Have you looked at your fuel trims and your O2 readings from live data?
__________________
2003 BMW X5 3.0 -- manual, 3.64s final gears, H&R lowering springs, K-Mac bushing kit
Reply With Quote
Reply

Bookmarks

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 12:44 PM.
vBulletin, Copyright 2021, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.