335i Smoke at idle

flewbyu335 · 03-12-2013, 04:59 PM

I have a 2007 bmw 335i it has 69,765mi i just installed downpipes and now at idle my car shoots out alot of white smoke that smells like oil. It used to only smoke from the left tip for about a week so i assumed it was the turbo seal going bad but now it smokes from only the right exhaust tip. I can also see smoke coming from the hood that also smells lik burning oil but once i revv the motor a couple of times it will stop smoking from both the hood and exhaust please help any information will be greatly appreciated
Mods are fabspeed downpipes, ae exhaust, jb4, bms intake

135Pats · 03-12-2013, 05:04 PM

http://www.e90post.com/forums/showth...ight=FBO+smoke

It shouldn't be smoking from the hood unless you have an exhaust leak, but if the downpipes are relatively new it's probably the gaskets sealing. The first hundred miles or so I had a brutally noxious smell in cabin with hvac on, it was the gaskets setting in, and has since gone away completely. FWIW my car does smoke, though it doesn't "shoot" out as much as waft out for a few seconds. Could be bad seals, could just be the nature of being catless, could be coolant...Doesn't seem to be a true consensus.

flewbyu335 · 03-12-2013, 06:17 PM

It happenes everytime at idel the downpipes hav been on for 2weeks nd i put about 1000mi already on them it smells like burning oil but its white and theres so much i t will cause a parking lot to be foggy and smell lik burnt oil

patrickguu · 03-12-2013, 06:19 PM

maybe your car is burning oil. check your oil level.

flewbyu335 · 03-12-2013, 06:27 PM

It is burning oil about 1/2quart every 1000mi my question is why is it burning oil and why is it coming out of one exhaust tip only

SharkBait · 03-12-2013, 07:12 PM

Sounds like you have an exhaust leak near your downpipes and one or more bad seals on the turbos. Did your old downpipes have a lot of oil residue in them?

flewbyu335 · 03-12-2013, 07:18 PM

I didnt look wen we took them out

135Pats · 03-12-2013, 07:56 PM

If its really letting off that much smoke you probably have toasted seals. N54s always leak or eat oil at some point sadly.

GTstunna612 · 03-12-2013, 09:39 PM

gonna be installing my new BMS DPs and hope this issue doesnt happen to me...currently the car is running pretty good

flewbyu335 · 03-12-2013, 10:22 PM

I got my turbos replaced about 20,000mi ago tho so idk

03-12-2013, 04:59 PM	#1
flewbyu335 Private First Class 34 Rep 174 Posts Drives: 2016 I8/2017 M3 Comp Join Date: Jul 2011 Location: Naples Fl iTrader: (4)	335i Smoke at idle I have a 2007 bmw 335i it has 69,765mi i just installed downpipes and now at idle my car shoots out alot of white smoke that smells like oil. It used to only smoke from the left tip for about a week so i assumed it was the turbo seal going bad but now it smokes from only the right exhaust tip. I can also see smoke coming from the hood that also smells lik burning oil but once i revv the motor a couple of times it will stop smoking from both the hood and exhaust please help any information will be greatly appreciated Mods are fabspeed downpipes, ae exhaust, jb4, bms intake
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03-12-2013, 05:04 PM	#2
135Pats Major General 461 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	http://www.e90post.com/forums/showth...ight=FBO+smoke It shouldn't be smoking from the hood unless you have an exhaust leak, but if the downpipes are relatively new it's probably the gaskets sealing. The first hundred miles or so I had a brutally noxious smell in cabin with hvac on, it was the gaskets setting in, and has since gone away completely. FWIW my car does smoke, though it doesn't "shoot" out as much as waft out for a few seconds. Could be bad seals, could just be the nature of being catless, could be coolant...Doesn't seem to be a true consensus. __________________ E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP F30 N55 XDrive EBII
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03-12-2013, 06:17 PM	#3
flewbyu335 Private First Class 34 Rep 174 Posts Drives: 2016 I8/2017 M3 Comp Join Date: Jul 2011 Location: Naples Fl iTrader: (4)	It happenes everytime at idel the downpipes hav been on for 2weeks nd i put about 1000mi already on them it smells like burning oil but its white and theres so much i t will cause a parking lot to be foggy and smell lik burnt oil
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03-12-2013, 06:19 PM	#4
patrickguu Second Lieutenant 8 Rep 229 Posts Drives: e92 335ix Join Date: Jun 2012 Location: brooklyn/buffalo iTrader: (6)	maybe your car is burning oil. check your oil level.
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03-12-2013, 06:27 PM	#5
flewbyu335 Private First Class 34 Rep 174 Posts Drives: 2016 I8/2017 M3 Comp Join Date: Jul 2011 Location: Naples Fl iTrader: (4)	It is burning oil about 1/2quart every 1000mi my question is why is it burning oil and why is it coming out of one exhaust tip only
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03-12-2013, 07:12 PM	#6
SharkBait First Lieutenant 14 Rep 308 Posts Drives: 2010 E92 335i Join Date: Jan 2013 Location: Lost Angeles iTrader: (0) Garage List 2010 BMW 335i (E92) [10.00] 1983 BMW 528e (E28) [10.00] 1988 BMW M6 (E24) [9.33]	Sounds like you have an exhaust leak near your downpipes and one or more bad seals on the turbos. Did your old downpipes have a lot of oil residue in them?
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03-12-2013, 07:18 PM	#7
flewbyu335 Private First Class 34 Rep 174 Posts Drives: 2016 I8/2017 M3 Comp Join Date: Jul 2011 Location: Naples Fl iTrader: (4)	I didnt look wen we took them out
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03-12-2013, 07:56 PM	#8
135Pats Major General 461 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	If its really letting off that much smoke you probably have toasted seals. N54s always leak or eat oil at some point sadly.
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03-12-2013, 09:39 PM	#9
GTstunna612 Lieutenant 52 Rep 512 Posts Drives: BMW Join Date: Feb 2008 Location: Tampa, FL iTrader: (0) Garage List E90 335i [0.00]	gonna be installing my new BMS DPs and hope this issue doesnt happen to me...currently the car is running pretty good __________________ E90 335i Alpine White E90 328i Titanium Silver
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03-12-2013, 10:22 PM	#10
flewbyu335 Private First Class 34 Rep 174 Posts Drives: 2016 I8/2017 M3 Comp Join Date: Jul 2011 Location: Naples Fl iTrader: (4)	I got my turbos replaced about 20,000mi ago tho so idk
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