2008 BMW 335i White Smoke From Exhaust

C4maro · 08-28-2018, 07:37 PM

I have white smoke coming out of my exhaust almost looks like vapour more than smoke the way it floats around, its more noticable when it's dark out otherwise it can be hard to see. It's only on idle can't see it otherwise, seems like if there's any wind flow it can't be seen so I would imagine it's nothing, just feels weird sitting in the drivethrough looking back seeing white smoke/vapour floating around ?

2007 335i 170***kms

TripleTheta · 01-23-2019, 02:27 AM

^^^^

This describes my exhaust perfectly.

After troubleshooting & ruling out HG & CCV, I'm leaning toward a seeping turbo seal into the exhaust. Will check charge air inlet to intercooler next to see if any oil is leaking on that side of the turbo.

On the bright side, if it's just a small leak into the exhaust, it won't effect performance. And the engine block isn't effected.

08-28-2018, 07:37 PM	#23
C4maro Private First Class 81 Rep 184 Posts Drives: 335i Join Date: Aug 2018 Location: Canada iTrader: (0)	I have white smoke coming out of my exhaust almost looks like vapour more than smoke the way it floats around, its more noticable when it's dark out otherwise it can be hard to see. It's only on idle can't see it otherwise, seems like if there's any wind flow it can't be seen so I would imagine it's nothing, just feels weird sitting in the drivethrough looking back seeing white smoke/vapour floating around ? 2007 335i 170***kms
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01-23-2019, 02:27 AM	#24
TripleTheta New Member 1 Rep 9 Posts Drives: e36 M3, e60 535xi M-sport HUD Join Date: Jan 2019 Location: TN iTrader: (0)	^^^^ This describes my exhaust perfectly. After troubleshooting & ruling out HG & CCV, I'm leaning toward a seeping turbo seal into the exhaust. Will check charge air inlet to intercooler next to see if any oil is leaking on that side of the turbo. On the bright side, if it's just a small leak into the exhaust, it won't effect performance. And the engine block isn't effected.
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