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09 535d possible turbo failure?

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Hi everyone, 

 

i have an 09 e61 535d touring. I have had an error in my ecu for throttle actuator for a while (before car was remapped). The car drives fine and still does dpf regenerations when needed. I’m aware the throttle actuators can get oil in them and causes them to fail. I checked a while ago and had very minimal oil (expected amount) in the boost pipe up to the actuator. I have brought a new throttle and gone to fit it today and found oil everywhere around the throttle actuator. I took the boost pipe of and there is a fair amount of oil in the pipe but still not huge amounts. The car does not smoke and has all of its power. 

 

Anyone have any ideas on where I should go now? It already has the modified breather and has regular oil changes and doesn’t seem to be using oil weirdly. 

 

I suppose i need need to remove boost pipes from turbos and see if one is showing more signs of failure than the other? 

 

Anyone been through similar? 

 

Thanks in advance

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Hi everyone, 

 

just an an update on this. I have taken the car apart today and think the cause is the boost pipe from the intercooler to the throttle housing. The clip that holds the pipe to the throttle has worn away and is very thin. When inspecting the throttle you can see the seal was sitting very wonky on it. The clip has actually cut in to the housing on the throttle. I expect I was loosing boost pressure from this and hence the oil blown around the engine bay under pressure. 

 

I took the intake pipe of on to on to the large turbo which had a bit of oil in but think it’s a normal amount due the the engine breather pipe attached to this. 

 

I have attached some some pics although not brilliant, what does anyone think, is it possible this is my problem? 

 

Thanks

A369D539-CE4C-4FE1-A84F-60536969C7A8.jpeg

7A632D66-7EEB-42BB-BCC6-B11025CB9E7E.jpeg

BC741620-0181-4B80-8D5B-0480FFA87BB7.jpeg

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Yes I know that maybe I didn’t explain it well. There is basically a grove within the grove that the clip has worn away. Hard to see in the pic but it’s definitely wear and is not on the new throttle housing. 

 

Also so the clip on the boost pipe has worn paper thin one on side 

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2 hours ago, JasonH said:

You do get a fair bit of oily black gunk in the intake manifold - often it will leak out around the swirl flap seals. A decent set of blanking plugs does stop it leaking there.

 

Thanks Jason. I have blanked the swirl flaps off already. I have a tiny bit of oil sweeping through them but nothing major. 

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