Oil on the intake side of turbo

Hi guys, 

Hoping you can give me some help/insight. I pulled the intake off the turbo today and found that on the inside there is a light layer of oil covering the inside of the intake housing of the turbo. To my knowledge this shouldn't occur and the oil should only be confined to the CHRA to lubricate.



This turbo hasnt been used that much since it's rebuild. It had 8k on it before I installed it and since then I have put only 13k on it. The turbo is performing fine, im not loosing oil and I am not blowing smoke from the exhaust at all.

Is this normal or should I be worried?  

Thanks in advance for your help.

Thanks Nick. I'll give it a go. 

I have been having a on and off gurgling noise coming from around the turbo/dump pipe area when I shut of car after a long drive. So I assume this has something to do with it. 

Are you running a blow off valve. Could be bad flutter causing oil spillage from within the turbo. If you look at the dirty oil pattern the the turbo speed would be quite slow to produce such an effect.  Looks to me as if the oil or what ever it is, is coming out from the turbo.

Agree with what mrskylighter said. Clean it and block the intake hose and see how it goes

purple5ive
dont think its BOV related..
are you running a catch can at all???
if so check and see if its got oil in it..
could just be blowby
if theres oil in the intake then theres oil in your intercooler too most likely, so would be st to clean that as well..
 

I have the stock gen3 catch can.
Is it possible to open it up or is it a sealed unit?   

Okay, too easy. I'll pop it off to have a look. 

Im also having trouble finding the hose that goes to the crank case from the catch can. 
The only hose I have been able follow goes into a hard metal line that then ends up finishing at the bottom of the engine bay with this black fitting in the corner. 


I was tinkering a moment ago and found some dried oil on the inside of one of the intake fittings which comes from the top of the valve cover. I also had a look at that black looking container that sits in between the valve cover and intake pipe and there seems to be fresh oil in there. I guess this could be one source of my problem as you guys have previously mentioned?

Haha okay cheers mate. 
Here are the 3 lines I have coming from the catch can. 
The red line heads behind metal protective shield on the firewall and assume it is connected to the fuel evaporative system as the line smells of fuel.
The blue/purple line comes from the bottom of the catch can and goes to that black fitting that I mentioned above which is a dead end. 
The green line is connected to a sensor which sits on a bracket that is bolted to catch can itself. 
Im guessing this has been incorrectly done?


Inside the intake pipe itself there is a lot a black soot which was from the last turbo but nothing fresh from what I can see. I dont have a line connecting from the catch can to the intake pipe. The only two connecting lines I have is the one I mentioned before which is in yellow below and the other that is in red seems to go under the intake manifold; where it goes from there..I have no idea. 

 

That black box with the three hoses connected (highlighted in yellow) is the catch can.
 
The other thing you might have been referring to is the charcoal canister which is part of the fuel system. It has a connection to the fuel tank vent line, two vacuum hoses to the throttle body and another which I think is a fresh air inlet to the canister.