S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

is this where my leak could be coming from?

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Old Feb 7, 2015 | 10:04 PM
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Zerocarpileup's Avatar
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2008 S63
is this where my leak could be coming from?

So I recently changed out the plugs that are prone to oil leak in the back of the engine. All three and it seems like there is no leak there anymore. But I'm still getting the smell of burnt oil and I still see burn oil on the passenger side catalytic converter. What is this part on the passenger side of the engine that is right next to the plug I replaced. It seems like it might be leaking from here. Is this the pcv unit? The hose ends up going into the the throttle body tube it seems.
Attached Thumbnails is this where my leak could be coming from?-rps20150208_000444.jpg   is this where my leak could be coming from?-rps20150208_000519.jpg  

Last edited by Zerocarpileup; Feb 8, 2015 at 01:07 AM.
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Old Feb 8, 2015 | 12:11 AM
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Second picture here https://mbworld.org/forums/s-class-w...ml#post6242934 is centrifuge (replacement kit http://www.ecstuning.com/Mercedes_Be...961/ES2730580/), third picture expansion plug.
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Old Feb 8, 2015 | 01:10 AM
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Yes this the part I was referring to. Thank you.
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Old Feb 9, 2015 | 10:18 AM
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konigstiger,

Thank you for posting the link to our site!

David
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Old Feb 9, 2015 | 08:32 PM
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Does the entire system need to be updated or just the oil separator? Has any one else did this maintenance? I am unfamiliar where the other parts are located.
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Old Feb 10, 2015 | 10:06 AM
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As it concerns the leak at the very least you will need to replace housing cover & centrifuge. Here are the individual part #s in the order they are shown in ECS kit link above to comparison shop. Note EPC shows all parts installed at production with the exception of bolts are replaced which may indicate modification.

* centrifuge 2730100162
* housing cover 2720100631
- oil separator 2730160134
- housing cover bolts 000000001478
- centrifuge bolt 000000003495
- bleed hose 2730180582

Replacement of all parts simply requires removing air filter housing, as mentioned here http://workshop-manuals.com/mercedes...ce_and_repair/
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