What is this vent e220 w124

[chris clk320]

Hi,
Anyone knows what this is? I'm thinking its some sort of breather for the fuel system? Seems to be weeping oily substance is this normal?.
Should it be attached to anything?

E220 w124

Thanks
Chris

 

[optimusprime]

Think its to do with the evap system, and it might fit on the white part .You can see the other side goes to evap canister .This is my wing replacement picture .

 

[chris clk320]

Think its to do with the evap system, and it might fit on the white part .You can see the other side goes to evap canister .This is my wing replacement picture View attachment 142928 .

 

[chris clk320]

Thanks for responding. your inner wings look mint!

I did think it looked like it might fit, but i have no play to slide it down and try it?
Ill take another look to see if its kinked or something.

 

[optimusprime]

Only a guess , i am going out to car soon,so i will take a look and picture it if i can .

 

[grober]

As already mentioned its part of a legacy fuel tank purge system which was vacuum operated. By the time the w124 E 220 came out it was replaced with an electrically operated solenoid valve which is normally mounted on the inner wing it will have an electrical connection and pipework from the inlet manifold and one leading to the charcoal canister under the wing. Here is a picture of one in W210 but should look roughly the same they often have MOT written on them. EVAP VALVE | Engine

 

[carat 3.6]

Hi,
Anyone knows what this is? I'm thinking its some sort of breather for the fuel system? Seems to be weeping oily substance is this normal?.
Should it be attached to anything?

E220 w124

Thanks
Chris

View attachment 142859

That is to vent vacuum pressure from the gearbox iirc, the oil will be ATF. Nothing to worry about unless it's gushing out of there.

 

[chris clk320]

That is to vent vacuum pressure from the gearbox iirc, the oil will be ATF. Nothing to worry about unless it's gushing out of there.

so shouldnt be connected? its not gushing just wet if that makes sense. havent noticed it like this before now.

 

[optimusprime]

Why dont other W124 have these breathers ? nothing in mine and thats got an auto box ?.

 

[carat 3.6]

Why dont other W124 have these breathers ? nothing in mine and thats got an auto box ?.

They all do. Some models have the vent directly off the modulator valve, others like this 220 have a short length of vacuum hose between them.

The bulge at the end should have a fine mesh screen inside to stop dirt getting in, it links to the modulator valve that sits infront of the passenger side strutt mount. You might find yours is hidden by the wiring harness as it runs down the inner wing.

 

[carat 3.6]

so shouldnt be connected? its not gushing just wet if that makes sense. havent noticed it like this before now.

It's just a vent, nothing connects to it.