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View Full Version : Guidance on oil leak in Audi A4 B8 2.0l CAGA TDI engine (with photos)



SchrodingersCat
15-10-2019, 12:47 PM
Hi Folks,
I was wondering if anyone had any experience with the following.
I was changing the oil on my 2008 Audi A4 B8 TDI CAGA 2.0l saloon when I notices that there appeared to be oil on the sump.
One was localised near the drain bolt so I wasnt worried about that, I can just make sure to tighten the bolt.
However, it looks like it is coming from higher up.

Previously I had a leak that I tracked down with the help of this forum to the EGR valve and throttle body. I replaced both along with the inlet manifold and gaskets that appeared to have stopped it. Unfortunately, it looks like I have another now.


In the time being, I was going to powerwash the underside and leave it for a day or two to see if I can see more easily where the leak is coming from.
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Thanks!

Specials
11-11-2019, 05:09 PM
I have the exact same issue with my Audi B8 2.0 TDI. Did you manage to find what was causing this?

SchrodingersCat
11-11-2019, 09:22 PM
Hi! No, I am afraid not. I havent got around to cleaning the underside yet to see where the oil starts coming from but I will soon.

Specials
12-11-2019, 02:39 AM
Hi! Sure, I will probably do the same. I have attached a video of my leak anyhow.
https://streamable.com/tgnwc

Novica
13-11-2019, 09:44 PM
Look around oil filter housing. There are sensor, cooler (which is dry on film), oil supply pipe to turbo and complete housing to engine block.

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