ID this vac line please
 

It comes from a Y from one of the transducers for thecwastegate I think. Runs back to battery where someone put a fuel filter on it And called it good. Where should it go for now. I am removing the garbage when I finds pressure gate.

Pic
 

Here's other pic

rdr:

1) Make - Model - Year - Engine

2) Stand back with the camera; we need to see where in the engine bay the components are located.

Looks like a vent to me.

I capped mine off, I imagine when everything was perfectly tight when new it was needed to get the pnue valves to operate

one way valve

Sorry thought I had a dig here. 93 300d w124

The pic with battery in it is passenger side rear of engine at firewall

Where it goes into the Y is aside get side front of engine bay. There are two Y hooked together forming an X one runs to the contraption behind the air filter, another runs to a contraption down behind the pass headlight, and the other runs to two of the small square electrical items

vacuum diagragm
 

Does anyone have a high resolution scan of the vaccum system 1993 w124 300d?

I found a crappy version but i can not zoom in. Best i can tell though is that the line in question should goto the firewall. Now what it does after that is unclear.

http://www.peachparts.com/shopforum/groups/w124-300d-2-5-turbo-pictures.html

http://www.peachparts.com/shopforum/groups/w124-300d-2-5-turbo.html

Thank You for the links.

item "a" fresh airflow to passenger compartment

what is that?

Fancy words for vent? Mine is not hooked to firewall it is just sitting there.