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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Smoke from turbo side of engine bay



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      06-28-2018, 07:46 AM   #1
Drifter2090
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Smoke from turbo side of engine bay

I've been having white smoke from the turbo side of my engine, I changed the VCG and inspected the VC for cracks, hoping this would fix it but it's still smoking.

It smokes like oil is dripping on it every few seconds, it will smoke on the front turbo then stop for a few seconds then smoke on the rear for a few seconds and stop, then it will repeat in a few more seconds. It eventually stops smoking but if I give it some more gas it will start up again.

Is it possible for the turbo oil lines to leak onto the turbo exhaust manifold?
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      06-28-2018, 10:37 AM   #2
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if you had a leak and smoke before the vcg change it can continue to smoke for 100's of miles. oil is is trolling you by perching on lines, ledges etc and dropping every so often. even if you get in there and clean that sh!t is hiding, waiting for you to pull in the garage so you can hear that sizzle.
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      06-28-2018, 11:42 AM   #3
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Quote:
Originally Posted by Drifter2090 View Post
I've been having white smoke from the turbo side of my engine, I changed the VCG and inspected the VC for cracks, hoping this would fix it but it's still smoking.

It smokes like oil is dripping on it every few seconds, it will smoke on the front turbo then stop for a few seconds then smoke on the rear for a few seconds and stop, then it will repeat in a few more seconds. It eventually stops smoking but if I give it some more gas it will start up again.

Is it possible for the turbo oil lines to leak onto the turbo exhaust manifold?
Check the VCG above it. The backside of the VCG is notorious for leaking. You can't see it unless you have a telescopic mirror with an led light on it.

https://www.googleadservices.com/pag...3EQ0Qx6BAgKEAE

If not, check around the oil lines on the turbo. You might have a leak there.
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      06-28-2018, 07:38 PM   #4
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Quote:
Originally Posted by Faredo View Post
if you had a leak and smoke before the vcg change it can continue to smoke for 100's of miles. oil is is trolling you by perching on lines, ledges etc and dropping every so often. even if you get in there and clean that sh!t is hiding, waiting for you to pull in the garage so you can hear that sizzle.
Damn I hope it's just that. I really don't want to change the oil lines haha. Thanks!
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      06-28-2018, 07:39 PM   #5
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Quote:
Originally Posted by mweisdorfer View Post
Check the VCG above it. The backside of the VCG is notorious for leaking. You can't see it unless you gave a telescopic mirror with an led light on it.

https://www.googleadservices.com/pag...3EQ0Qx6BAgKEAE

If not, check around the oil lines on the turbo. You might have a leak there.
I'll take a look at the back but I am 100% sure the gasket was placed perfect, ill take a look at the lines too. Thanks
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