w202 crankcase emission control

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thephatmaster

Active Member
Joined
Sep 15, 2016
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81
Car
W202, C200 Saloon, Manual
Hi all,

I've been reading about the benefits of installing oil catch cans on pretty much any engine.

I have a 1999 w202 with the m111 2.0 unit. I've studied the workshop manual and various threads, but I am not sure about the location of the various crankcase emission control components.

I think "K" models have a separate oil separator unit, which they need due to higher compression and therefore blowby. On my N/A engine the manual suggests something similar is built into the block, and cam cover.

All I have connecting engine and intake are three hoses. One very oily one cam cover > intake, one into the side of the throttle body, and another into the throttle body (which seems to just be the brake booster vac hose). See pics below:

IMG_20180511_094605.jpg

IMG_20180511_094618.jpg

So I assume I splice my catch can into the cam cover hose - or should I consider splicing the small hose going into the side of the throttle body too?
 
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