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nsb335 nsb335 is offline
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Default SMOKING OUT OF OIL CAP - 02-13-2018, 06:54 PM

Guys I need help, my 335i has already gone they a pair of new bmw turbos trying to chase this. I replaced the turbos and my car is still smoking out the exhaust. And this is what I feel is the issue. Any help would be much appreciated.

https://youtu.be/WaNY3N3MPzQ
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EuroDouche EuroDouche is offline
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Default 02-13-2018, 07:58 PM

Did you check valve stems seals? If they're leaking could be the cause.
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rkreimer10 rkreimer10 is offline
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Default 02-14-2018, 07:37 AM

First things first.....any codes?

Now.....

When was your pcv changed?
When was your last walnut blasting service?
Any oil in the coolant or vise versa?

My guess is pcv or valve cover. I would also recommend a low side external pcv. You can get this at rbturbo.com
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nsb335 nsb335 is offline
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Default 02-14-2018, 07:48 AM

I have replaced my pcv with a rb one! And last walnut blasting was 15k ago
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Rob@RBTurbo Rob@RBTurbo is offline
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Default 02-14-2018, 07:59 AM

May want to do a compression and/or leak down test to confirm the engine is healthy.


See www.rbturbo.com for N54 Twin Turbo Bolt-On upgrades, or contact directly 314-630-8950 rob.rbturbo@gmail.com for a price quote.
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FEDE/E92 FEDE/E92 is offline
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Default 02-14-2018, 02:15 PM

Can something like this be caused by clogged up VC internally or maybe the block itself, passages to the VC/PcV?

Are there oil in your plugs?
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rkreimer10 rkreimer10 is offline
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Default 02-14-2018, 07:57 PM

.

Last edited by rkreimer10; 02-14-2018 at 08:05 PM..
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eligard eligard is offline
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Default 02-14-2018, 08:17 PM

I would start with compression test either.
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nsb335 nsb335 is offline
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Default 02-22-2018, 07:41 PM

Bump compression test turned out good. Any other suggestions
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nsb335 nsb335 is offline
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Default 02-22-2018, 07:41 PM

Quote:
Originally Posted by Rob@RBTurbo
May want to do a compression and/or leak down test to confirm the engine is healthy.
You donít think your external pcv might help?
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Nanometer Nanometer is offline
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Default 02-22-2018, 08:56 PM

What does your PCV have to do with it? If it does it at idle you have other issues going on. Only thing the pcv does is checking the air flow/pressure under boost.


335i E90 2009 ///M Sport Auto
Mods: | Wagner Intercooler | MeowPipe | Meth-Trunk | JB4 | Pump_Back_End_Flash | Fuel-it! Stage 2
Drivetrain--------ForgeStar F14 Wheels 18" (245 & 275 PS4) | XHP L3 Transmission Flash | Wavetrac LSD
Suspension-------KW V3 Coil Overs| M3 RSF Bushings and Dif Bushings | H&R Sways


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rkreimer10 rkreimer10 is offline
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Default 02-23-2018, 08:05 AM

Quote:
Originally Posted by nsb335
Bump compression test turned out good. Any other suggestions
Any codes present?

Do you have more smoke on cold starts? this could be valve stem seals....

How was your walnut blasting done? what tools were used? If ports on the intake are not properly covered, walnut shells can enter the pcv system.

Last, and this is a theory that comes from a previous situation with my e46 and the above statement. I am still learning about this motor though, So someone please correct me if I am wrong.

Maybe your valve cover is plugged or broken in the pcv portion. This can cause crank case pressure problems. If it is broken or plugged internally, some of the recirculated gas, oils, and condensation may be burning off in your valve cover before it can get to the combustion chamber.

These pcv systems are detrimental to our engines at best. Here is what is recycling through your engine through the stock pcv system. Rob has the solution!!! *end rant*




Not sure if any of this helps you, but I noticed smoke coming from my m54 valve cover months before my ccv plugged up and caused it to have a heart attack and stroke (oil dump & engine fire) all in one shot.

Can you take off you intake manifold and investigate?
Or the valve cover?

I guess the only other question I would investigate is cooling? Is coolant somehow entering the valve cover and burning there? Or is coolant burning somewhere where it can escape through the valve cover?
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Default 02-23-2018, 04:23 PM

Quote:
Originally Posted by nsb335
Bump compression test turned out good. Any other suggestions
What is your (or your mechanics) definition of good, results-wise? Did you do a leak down?


See www.rbturbo.com for N54 Twin Turbo Bolt-On upgrades, or contact directly 314-630-8950 rob.rbturbo@gmail.com for a price quote.
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Default 02-23-2018, 04:31 PM

Quote:
Originally Posted by Nanometer
What does your PCV have to do with it? If it does it at idle you have other issues going on. Only thing the pcv does is checking the air flow/pressure under boost.
PCV works a bit during idle/decel, mostly during transient cruise, and literally nothing under boost.

OP it seems you are building up pressures in the crankcase while under vacuum in the intake manifold, usually the last time a healthy engine will do as such. It could stand to reason that you have a plugged PCV valve, vent hose, or clogged valve cover passage ways. Ultimately I'm still a bit skeptical that your leak down is "good", but conclusive per cylinder %age test results should rule that out.

Rob


See www.rbturbo.com for N54 Twin Turbo Bolt-On upgrades, or contact directly 314-630-8950 rob.rbturbo@gmail.com for a price quote.
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