F30POST
F30POST
2012-2015 BMW 3-Series and 4-Series Forum
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > B58 Turbo Engine / Drivetrain / Exhaust Modifications > 2016 BMW 340i xDrive - White smoke from exhaust and fuel smell
Extreme Powerhouse
Post Reply
 
Thread Tools Search this Thread
      05-09-2021, 12:44 PM   #23
WrxToBeamerGuy
Private First Class
26
Rep
188
Posts

Drives: BMW 340i xDrive
Join Date: Dec 2019
Location: Utah

iTrader: (0)

Quote:
Originally Posted by G.Newt View Post
If it's just the diaphragm, it's a $40 part. I might even keep one in the car just in case so it doesn't leave me stranded.
maybe im just impatient but I had to basically destroy the cap to get it off.
Appreciate 0
      05-09-2021, 01:15 PM   #24
Th3Walrus
Private
Canada
41
Rep
75
Posts

Drives: 2017 340i xDrive 6MT MPPSK
Join Date: Sep 2020
Location: Ontario

iTrader: (0)

Quote:
Originally Posted by WrxToBeamerGuy View Post
What are you trying to accomplish?
I have yet to hear a reason for idling for so long. Gas engines aren't meant to idle for prolonged periods of time, period. Stuck in traffic behind a major accident? Turn it off. Idling to keep the battery charged due to using the radio in a drive in? Lol. Way back in my first car I had 3 amps running subs and separate component speakers and I could run it for 3 hours engine off with the volume at 3/4 and it would start no problem.
Appreciate 0
      05-10-2021, 09:22 AM   #25
BMWILUVU
Major
444
Rep
1,088
Posts

Drives: 340ix
Join Date: Mar 2017
Location: The Boibs

iTrader: (0)

Quote:
Originally Posted by WrxToBeamerGuy View Post
maybe im just impatient but I had to basically destroy the cap to get it off.
Impatient. Pad a small metal trim pry-bar and leverage it off. There is very little real-estate from which to lever off but it can be done with prybar sideways rested along the circumference at 4 o'clock and comes off rather easily. You just need to play with it.
Appreciate 0
      05-10-2021, 02:46 PM   #26
WrxToBeamerGuy
Private First Class
26
Rep
188
Posts

Drives: BMW 340i xDrive
Join Date: Dec 2019
Location: Utah

iTrader: (0)

Quote:
Originally Posted by BMWILUVU View Post
Impatient. Pad a small metal trim pry-bar and leverage it off. There is very little real-estate from which to lever off but it can be done with prybar sideways rested along the circumference at 4 o'clock and comes off rather easily. You just need to play with it.
Good to know. You cannot buy the cap itself so the entire valve cover is coming off and being replaced by myself and a friend.
Appreciate 0
      05-10-2021, 03:20 PM   #27
BMWILUVU
Major
444
Rep
1,088
Posts

Drives: 340ix
Join Date: Mar 2017
Location: The Boibs

iTrader: (0)

Quote:
Originally Posted by WrxToBeamerGuy View Post
Good to know. You cannot buy the cap itself so the entire valve cover is coming off and being replaced by myself and a friend.
Expensive way to replace a pcv cap.
Appreciate 0
      05-10-2021, 03:22 PM   #28
WrxToBeamerGuy
Private First Class
26
Rep
188
Posts

Drives: BMW 340i xDrive
Join Date: Dec 2019
Location: Utah

iTrader: (0)

Quote:
Originally Posted by BMWILUVU View Post
Expensive way to replace a pcv cap.
Sure is, that being said I feel better about renewing all of the gaskets as well. I searched for hours trying to find the cap but its not sold.
Appreciate 0
      05-12-2021, 02:36 AM   #29
alpinweiss340
Private
52
Rep
72
Posts

Drives: 340i
Join Date: Jul 2020
Location: Nor cal

iTrader: (0)

Quote:
Originally Posted by luca10 View Post
So first thing I would do is get rid of the Vargas one way crankcase breather. They have great products, I even run their GC turbo, but I heard many stories of breather causing white smoke out the exhaust, don't know the exact science behind the reasoning but no good. I even had the same smoke issue happen right after my install of the same breather and I just put my oil cap back on, was fine.

Second thing, regarding excessive fuel smell and white smoke out the exhaust, that could possibly be an injector. 2 weeks ago, one of my injectors got stuck open somehow. Car had really rough idle out of nowhere and had fuel coming out the exhaust with smoke due to the fuel flooding the cylinder head. As soon as I pulled plug #4 I smelled fuel and realized it was the injector. So I replaced the injector, of course did an oil change and all was good.

So I'd have them check for plugs/coils and injectors. And I'd also get an oil change if that's one of the problems, because if fuel got into your cylinder head, it will cause the oil to lower its viscosity (become thin) and it can cause scoring in the cylinders and engine internal issues.

Hope it all goes well, keep us updated
THIS! I bought the breather the first week when it came out from Vargas.
First time installing it, drove it around the block, started heavily billowing white smoke from the exhaust, smelled like oil. Good thing I was super close to my house. I took off the breather, emailed Vargas, returned it, they sent me a new one. The new one came with two metal rings on the bottom end? Instead of one.

I didn’t bother installing it for a month or so.
Then I installed it. Drove it around the block and same thing. I sent videos to Vargas explaining my problem. Here’s the response email I got.

After that I just put the factory one back on and have the Vargas breather in a box in the garage. No problems with the factory one so far (and yea I tired their solutions, just didn’t work out for me)
Attached Images
 
Appreciate 0
      05-12-2021, 09:51 PM   #30
luca10
Second Lieutenant
luca10's Avatar
United_States
75
Rep
222
Posts

Drives: 2018 BMW 340i xdrive
Join Date: Dec 2018
Location: New Jersey

iTrader: (0)

Quote:
Originally Posted by alpinweiss340 View Post
Quote:
Originally Posted by luca10 View Post
So first thing I would do is get rid of the Vargas one way crankcase breather. They have great products, I even run their GC turbo, but I heard many stories of breather causing white smoke out the exhaust, don't know the exact science behind the reasoning but no good. I even had the same smoke issue happen right after my install of the same breather and I just put my oil cap back on, was fine.

Second thing, regarding excessive fuel smell and white smoke out the exhaust, that could possibly be an injector. 2 weeks ago, one of my injectors got stuck open somehow. Car had really rough idle out of nowhere and had fuel coming out the exhaust with smoke due to the fuel flooding the cylinder head. As soon as I pulled plug #4 I smelled fuel and realized it was the injector. So I replaced the injector, of course did an oil change and all was good.

So I'd have them check for plugs/coils and injectors. And I'd also get an oil change if that's one of the problems, because if fuel got into your cylinder head, it will cause the oil to lower its viscosity (become thin) and it can cause scoring in the cylinders and engine internal issues.

Hope it all goes well, keep us updated
THIS! I bought the breather the first week when it came out from Vargas.
First time installing it, drove it around the block, started heavily billowing white smoke from the exhaust, smelled like oil. Good thing I was super close to my house. I took off the breather, emailed Vargas, returned it, they sent me a new one. The new one came with two metal rings on the bottom end? Instead of one.

I didn't bother installing it for a month or so.
Then I installed it. Drove it around the block and same thing. I sent videos to Vargas explaining my problem. Here's the response email I got.

After that I just put the factory one back on and have the Vargas breather in a box in the garage. No problems with the factory one so far (and yea I tired their solutions, just didn't work out for me)
Yep, I don't know exactly what the problem is, I just heard many people say do a complete pcv upgrade or none at all. Same thing happened though, drove for a mile, smelled oil burning, white smoke out the exhaust. Switched back to stock cap and all was good
__________________
Instagram- f30_luca
Modifications: Custom E50 Tune by David Shoup, B58TU Fuel Pump, Armytrix Exhaust, VRSF downpipe, Big Boost Charge pipe/bov kit, CTS intake, H&R Springs/B8 Struts, 335is Clutch Upgrade
Appreciate 0
      05-13-2021, 09:32 AM   #31
WrxToBeamerGuy
Private First Class
26
Rep
188
Posts

Drives: BMW 340i xDrive
Join Date: Dec 2019
Location: Utah

iTrader: (0)

Quote:
Originally Posted by luca10 View Post
Yep, I don't know exactly what the problem is, I just heard many people say do a complete pcv upgrade or none at all. Same thing happened though, drove for a mile, smelled oil burning, white smoke out the exhaust. Switched back to stock cap and all was good
Exactly this!

Here is my email response from vargas

"This would have ZERO to do with that. It's nothing but a breather. When the engine is at anything other than boost its functions like an oil cap, when its under boost it vents. It does nothing else at all. We have these on 1000's of late model BMW's. Including a brand new G80 M3, and a 2017 340IX that are both shop cars with no issues.


With that said parts that are installed, and used can be returned for a 50% store credit only"

50 percent store credit lol....
Appreciate 0
      05-14-2021, 01:30 PM   #32
kern417
Cheapskate
United_States
3500
Rep
4,455
Posts

Drives: 2018 440i / 2010 X5
Join Date: Aug 2016
Location: Cincinnati

iTrader: (1)

Quote:
Originally Posted by Th3Walrus View Post
I have yet to hear a reason for idling for so long. Gas engines aren't meant to idle for prolonged periods of time, period. Stuck in traffic behind a major accident? Turn it off. Idling to keep the battery charged due to using the radio in a drive in? Lol. Way back in my first car I had 3 amps running subs and separate component speakers and I could run it for 3 hours engine off with the volume at 3/4 and it would start no problem.
Literally nothing you're saying is a valid reason for this failure mode. But that's fine. You're in ontario. If you ever get stranded in January waiting for a tow truck, just turn off your car. Your batteries will keep you warm.

Reminds me of that guy who's F250 developed a death wobble above 65mph, and the dealer claimed speed limits are 65 so they "just shouldn't go that fast in a truck."
__________________
Quote:
Originally Posted by umizoomi View Post
As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
Instagram/Youtube/TikTok: @kern417
Appreciate 1
G.Newt344.50
      05-14-2021, 01:40 PM   #33
Th3Walrus
Private
Canada
41
Rep
75
Posts

Drives: 2017 340i xDrive 6MT MPPSK
Join Date: Sep 2020
Location: Ontario

iTrader: (0)

Quote:
Originally Posted by kern417 View Post
Literally nothing you're saying is a valid reason for this failure mode. But that's fine. You're in ontario. If you ever get stranded in January waiting for a tow truck, just turn off your car. Your batteries will keep you warm.

Reminds me of that guy who's F250 developed a death wobble above 65mph, and the dealer claimed speed limits are 65 so they "just shouldn't go that fast in a truck."
Nah, I'd be fine. I'd just make a quick igloo to keep warm, that's what y'all think we live in right?
Appreciate 0
      05-14-2021, 08:18 PM   #34
G.Newt
Captain
345
Rep
775
Posts

Drives: B58 6MT
Join Date: Feb 2017
Location: CO -> TX

iTrader: (0)

Quote:
Originally Posted by kern417 View Post
Literally nothing you're saying is a valid reason for this failure mode. But that's fine. You're in ontario. If you ever get stranded in January waiting for a tow truck, just turn off your car. Your batteries will keep you warm.

Reminds me of that guy who's F250 developed a death wobble above 65mph, and the dealer claimed speed limits are 65 so they "just shouldn't go that fast in a truck."
The mental gymnastics people will go through to say we can't idle our car for 30 mins or so, but a 1985 Chevy Cavalier can do it no problem. I've spent that much time brushing a ton of snow off my car and letting it idle in the meantime.

I see it as an engineering flaw. I don't see too many people defending N55's chargepipe problems. "Just stay out of boost and your chargepipe won't break. Why are you accelerating that fast anyway?"
__________________
2016 340i xDrive 6-speed.
FBO. Stage 2 E30 BM3. 440hp / 515lb-ft (Mustang Dyno)
Appreciate 0
      05-17-2021, 08:41 AM   #35
kern417
Cheapskate
United_States
3500
Rep
4,455
Posts

Drives: 2018 440i / 2010 X5
Join Date: Aug 2016
Location: Cincinnati

iTrader: (1)

Quote:
Originally Posted by G.Newt View Post
The mental gymnastics people will go through to say we can't idle our car for 30 mins or so, but a 1985 Chevy Cavalier can do it no problem. I've spent that much time brushing a ton of snow off my car and letting it idle in the meantime.

I see it as an engineering flaw. I don't see too many people defending N55's chargepipe problems. "Just stay out of boost and your chargepipe won't break. Why are you accelerating that fast anyway?"
Yeah makes no sense. When a mosquito punctures his radiator and he's stuck on the highway waiting on AAA, he'll figure it out.
__________________
Quote:
Originally Posted by umizoomi View Post
As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
Instagram/Youtube/TikTok: @kern417
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -5. The time now is 11:15 PM.




f30post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST