Stage 2 tune: My SCR, DPF, EGR and Urea delete Journey

[Stockx5]

Removed the top turbo shield to look for the source of my smoke smell and the top turbo to manifold gasket appears to be in good shape. there are no black escape marks anywhere around it



the bottom turbo to manifold gasket looks to be in good shape as well.



yet when I look at the piping for what should be carring clean air they are all sooted up




looking at the breather tube i see lots of oil coming out of it, my deduction is that the smell is possibly caused by excess crankcase pressure pushing oil out of what ever seal it can.




looking at the intake there is lots of oil dripping out of there as well



so instead of going crazy and replacing every seal Im just gonna add a vented catch can to relieve the pressure like someone did in e90

ChiDiddy Vented Oil Catch Can setup *pics*

this explains why the smell is very intermittent. sometimes I am unable to smell anything burning under the hood.

[daytonatrbo]

The CCV boot and the o-ring inside the intake should be replaced. Mine hasn’t leaked at the ASV since replaced the “molded seal” or whatever they call it.


For Pete’s sake, get an EGR test pipe!

Lastly, the center section of the turbo looks very dirty. But I’ve not looked at mine to compare.

[Stockx5]

Originally Posted by daytonatrbo

The CCV boot and the o-ring inside the intake should be replaced. Mine hasn’t leaked at the ASV since replaced the “molded seal” or whatever they call it.


For Pete’s sake, get an EGR test pipe!

Lastly, the center section of the turbo looks very dirty. But I’ve not looked at mine to compare.

well that is very useful! I did not know about ccv boot replacement.
I guess I need to go back there and clean to find out exactly where it is coming from. as well as replace the intake seal

the turbo dark oil marks are from a reciently replaced leaky turbo line. the leak is no longer happening.

[daytonatrbo]

Mine looked just like yours. It leaked where the plastic elbow of the charge pipe met the ASV. I replaced the molded oring in there with success. Very easy and around $10

Andrew Rodriguez sells just the rubber portion of the CCV pipe on his site for about $15. I just ordered one from him. Should deliver tomorrow. Mine looks just like yours. he also carries the other seal you need.

[Stockx5]

Originally Posted by daytonatrbo

Andrew Rodriguez sells just the rubber portion of the CCV pipe on his site for about $15. I just ordered one from him. Should deliver tomorrow. Mine looks just like yours. he also carries the other seal you need.

yea i was gonna clean up the area first to see where the leak is coming from but I decided to just order the tube and replace it. Ill clean while im there next time.

[seattle]

Originally Posted by Stockx5

so instead of going crazy and replacing every seal Im just gonna add a vented catch can to relieve the pressure like someone did in e90

ChiDiddy Vented Oil Catch Can setup *pics*

this explains why the smell is very intermittent. sometimes I am unable to smell anything burning under the hood.

Go with ProVent - separates CCV gasses and oil. Returns oil into oil sump and gasses into turbo intake. Proven to work by multiple users (initiated by ZetaTre).
See this thread.

The short CCV return pipe you see leaking is expensive because it comes together with the sensor (for whatever reason). I ended up replacing it with a hose that is able to handle gasses/oil.

When occasionally checking turbo intake pipe, there's only a very thin clear and oily layer in the CCV return pipe attaching to it. ProVent is doing a great job at removing more than 90% of oil, assuming the ProVent filter element is replaced (or washed) regularly. A $50 item.

That being said, don't put all your hopes on ProVent. You may find that your turbo is leaking oil. I know mine does. Despite ProVent doing an excellent job, oil still gets into intercooler and into throttle body, cooked by EGR and into intake manifold. CBU.
Less than before ProVent, but plenty.

[daytonatrbo]

Being deleted helps immensely with the carbon buildup. Removing the exhaust from the cocktail prevents the oil from caking.

[Stockx5]

Originally Posted by daytonatrbo

Being deleted helps immensely with the carbon buildup. Removing the exhaust from the cocktail prevents the oil from caking.

yea that's a bunch of stuff that I don't have to consider in my diagnosis.
yesterday was driving with the windows down the entire time, the smell is so strong the car is undriveable.

Originally Posted by seattle

Go with ProVent - separates CCV gasses and oil. Returns oil into oil sump and gasses into turbo intake. Proven to work by multiple users (initiated by ZetaTre).
See this thread.

The short CCV return pipe you see leaking is expensive because it comes together with the sensor (for whatever reason). I ended up replacing it with a hose that is able to handle gasses/oil.

When occasionally checking turbo intake pipe, there's only a very thin clear and oily layer in the CCV return pipe attaching to it. ProVent is doing a great job at removing more than 90% of oil, assuming the ProVent filter element is replaced (or washed) regularly. A $50 item.

That being said, don't put all your hopes on ProVent. You may find that your turbo is leaking oil. I know mine does. Despite ProVent doing an excellent job, oil still gets into intercooler and into throttle body, cooked by EGR and into intake manifold. CBU.
Less than before ProVent, but plenty.

I ordered the vented catch can already at 26 is a lot cheaper. the user in the thread

ChiDiddy Vented Oil Catch Can setup *pics*

went from a closed catch can to an open one.

I gess i will start with the cheaper part if it doesnt work I will get the provent.

what are good hoses to use ? I am unsure what length to order as well.

[Stockx5]

well thanks for daytonaturbo for suggesting replacing the ccv boot.

Mine just snapped the moment i tried to remove it



removed the clean air pipe and lookey look what I found



the oil from the ccv was leaking trough the outside of the pipe and coating the turbos nicely with oil.

pretty sure this is the source of my burning smell in the cabin!!!

all tho it will probably take some time for it to completely burn off and the smell to go away unless i want to go in and spray some break cleaner or throttle/intake cleaner. neither of which seem to be very effective at cleaning soot.


since it's 40 degrees out I decided to install the catch can.




as far as location I did not feel like going trough all the work to relocated the break line.

keeping in mind the catch can should be slightly lower than the ccv breather tube I decided to mount it right where the urea fill port used to be for the passive tank.

an L bracket from home depot, some grinding and a few swift blows with a hammer and ended up with this.





there is room to unscrew the bottom portion to dump the oil and overall it blends in there pretty good.


for the connection to the ccv I decided to also go to the front like Chidaddy did on his set up.

the ccv pipe must be cut to connect to it.




unfortunately the 5/8 hose is exactly the same size as the CCV pipe so Im gonna need to go to o rileys and buy a slightly higher diameter hose.

the 1 inch hose I bought for this purpose is way too big.

heating up the hose with a torch and by kitchen stove did not prove fruitful to make it fit.



since I removed the clean air pipe I took a look at the gasket and IMO it looks fine. Im unsure if a gasket that does not leak air will leak oil.

I would think the ultra slow oil flow would eventually make it's way trough the gasket. but Im not sure.

[Stockx5]

Before reassembly I cleaned what I could from the turbo with brake cleaner, was able to get enough of it off so that if it continues to leak I will know. no idea how one would detail the turbo other than removing it and disassembling it.



This is how I routed the lines, 335D intake is slightly different so my lines had to go around it.



Bought a 3/4 elbow from oriley for about 2 bucks




The catch can ended up directly under the intake pipe and the catch can filter did not fit. So I just removed it and put the plug so it's a sealed system.




Final product



before I finished the project I drove for about 1/2 mile with the CCV sealed shut. the car was blowing so much white smoke that it totally blocked out the 2 lanes. I guess there is a lot of crankcase pressure and since there was no way for it to escape it just burned lots of engine oil instead.