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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 > Oil coming out of aftermarket blow of valve



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      01-11-2023, 05:26 PM   #1
Frosty Kush
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Oil coming out of aftermarket blow of valve

Hi, im new to these forums, but seeking some insight, ive a bmw 335i e92 2008, im currently in the works of restorting to its glory days as it hasnt been driven in like 2 years. I drove it for maybe 2 miles got it back to my garage. Upon taking everything apart from the top of the engine like the plastic bits, ive noticed that my after market blow of valve which attaches to an aftermarket charge pipe and there is just a lot of oil that was spat out like you can even see inside the blow of valve dirty with oil what would that indicate?

Any response greatly appriciated!
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Last edited by Frosty Kush; 01-11-2023 at 05:36 PM..
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      01-12-2023, 09:35 AM   #2
HondaRC51
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Turbo seals are blown causing it to leak inside.
Turbo drains clogged causing seals to leak.
PCV system causing oil to enter the intake track (catch cans needed)
Or the fluid is actually coming from the power steering reservoir leaking but it sprays everywhere making it look like the BOV is leaking oil. clean everything really good and check your power steering level. Go for a drive and see if there is any more oil coming out.
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      01-12-2023, 10:22 AM   #3
Frosty Kush
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Quote:
Originally Posted by HondaRC51 View Post
Turbo seals are blown causing it to leak inside.
Turbo drains clogged causing seals to leak.
PCV system causing oil to enter the intake track (catch cans needed)
Or the fluid is actually coming from the power steering reservoir leaking but it sprays everywhere making it look like the BOV is leaking oil. clean everything really good and check your power steering level. Go for a drive and see if there is any more oil coming out.
Thanks for the response I will have a better look, now that you mention my power steering, when I do a full lock on either side on the steering wheel, it does make this squeaky noise. I also removed my coil packs there lot of oil in each compartment, im gonna remove the valve cover gasket today which could possibly be another reason why theres so much oil everywhere. thanks for that again!
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