Euro 83 500 SEC

ryin g to pass smog so checking around.
I found the left side of the cannister goes about 1 foot & then is broken.
I don 't know where it is supposed to be connected.



The other line is black 6mm & goes down so I don't know where that goes or of its connected

I can't seem to find it on my parts diagram
Learned this could affect fuel cap pressure test.

I wonder whats up?
Why its disconnected?

Temp permit expires in 2 weeks

My inclination is there is a small vent port off to the side of the intake hose that feeds aircleaner from pass valve cover. If I connect a vac line from there to the eva0p can it would then feed those gases back into the system?


Any ideas?
Help

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83 500 SEC Euro 198K

You really need a vacuum diagram.

Where does the other hose go to?

There is a chance this is a vacuum canister and not a carbon canister. A carbon can needs at least 3 fittings, one leads to the tank, one to engine vacuum through a control valve and a third to atmosphere. The one running to atmosphere goes through some sort of filter, sometimes it goes to the clean side of the engine air filter.

Gosh now I'm lost...I was going to try hooking it up to the air intake hose as there is a spot for a vac line thats plugged.

Can you see anything around it?

Anyway whatever it is is not connected on the left top vac hose..




I guessed I always assumed it was a charcoal can not really knowing as I can't find it on my diagrams of the car & I have the parts book from MB.

The big black canister is about 5 inches wide & 8 inches tall so its big
Only see the 2 ports on top they are 6 mm & connected to black vac line so that's fuel related?...not sure whats under it.


Whats this can with the yellow vac line?

This is on the right side wall & its small about 3 inches.

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83 500 SEC Euro 198K

Diagram federal egr help?

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83 500 SEC Euro 198K

Pelican Mercedes-Benz Tech Article - Replacing Your Purge Valve on your Mercedes-Benz - Mercedes 380SEL and W126 Chassis



84 500 sec has can w 2 leads on top. One line leads toward around back.
tubing in pic is bigger than mine which is about 7mm.

I'd like to try hooking it up to the intake but afraid if the canister or lines have a vac leak I will be messing up my system even more.

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83 500 SEC Euro 198K

The top pic in post 3 shows the right hand rubber line on the black can turning into black nylon and heading down the frame. This is a sign that it is a vapor line and the black can is a evap carbon can. In this case, the loose line would have to go to a purge valve then to engine vacuum.

The lower pic in post 3 shows the yellow hose attaching to a vacuum switch ( look for 2 wires on the bottom ) , not sure of what it does. In this pic there is a purple / yellow vac hose not attached.

Top pic in post 4 is for a turbo diesel, no help there.

Bottom pic in post 4, top right shows an elbow ( 104 ) attaching to what looks like a carbon can, however 2 lines are missing on the can and the other end of the hose ( 95 ) goes to a temperature actuated vacuum valve but nowhere past that.

Bottom right ( 71 ) looks to be a EGR valve ( NOx emission control )

Really thinking a smog place is not going to be able to figure out a old benz esp a federal....

I can't bring this to there attention as they will rat me out to smog & I'd have a hard time fixing it esp when we don't know where these broken lines go.

They are hidden well & it took me years to find them...
LOL

Its sqeaked by passing smog a few times so guess its not all that urgent but would like to tighten up open lines.

I still would like to get to econ guage down to min at idle.
Don't even know where to start with that.


This is my setup. Nice to see it in print. I think its from star tec but the numbers associated with the parts are not the same as MS's. Thats not that good but at least its a start. The us is different & seems to have more stuff & added lines.
I'm guessing 86 is the throttle body?
I can't see it but was told those lines into 86 go to throttle body.
Wish I could find what colors those vac lines are.
Mine are mostly reddish.
What is that structure on the bottom right?
I'll check this with my lines
but really need to know where the left side of the big black can is supposed to go.
Charlie adds that 101 leads to carcoal can not shown.
Would that mean that the left side of can goes to throttle body?
Thats under the FD & I can't get to it.
I am confused why he says it should hook up
The line out of the charcoal cannister goes into the vent hose from the passenger side valve cover just before the aircleaner connection...
Hope Charlie checks in as he seems to have same setup.

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83 500 SEC Euro 198K

Post 5, output side of the canister must go to a purge valve ( though some cars use a vacuum restriction ) so don't hook you loose can hose directly to vacuum.

Looks like it.

At hose 71 ? Looks like the EGR valve

Looks like it, if that is the case there has to be some sort of restriction or purge valve to control the system.

If the hose is plugged at the throttle body, there will be no adverse affect on tail pipe emssions.

This would be the fresh air inlet to the can.

More "
I still would like to get to econ guage down to min at idle.
Don't even know where to start with that. "

The gauge likely needs to see engine vacuum, there would be a hose running into the car. If you HVAC used vacuum to operate the doors and they don't work they likely share a vac source.

Thanks for the help as this is really confusing trying to get this car right.


Then I would need to have a purge valve with not knowing where that goes. That is a 84 mine is a 83 & my can does not have such heavy duty tubing...its bascially the 6 mm black vac line

I don't there are any under the vac switch with the yellow line on top
I don't know where the purple line went...could have been part of the moving headlights?
ok



This diagram has more vac lines etc than my car. I was not sure if its supposed to be like this...so I posted it in case it might help

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83 500 SEC Euro 198K

Doors lock, trunk locks, windows work, seat belt arm works...actually everything I can think of works so I giess the pass compartment has vacuum.

Other dash guages work but my econ guage is about 1/4 at idle.
I never noticed it might have a problem until someone noted that at idle the econ guage should be pinned on left.

I still need to try to see what a purple line means to try to cut down possible souirce of that open purple line at the front near the drivers side light.

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83 500 SEC Euro 198K

Would it matter which side of the temp vac switch was hooked up?
I seem to recall they are switched so the egr is on the left (pass) side port not right.


this diagram is correct except green valve is on outer side of engine



I hate playning with them as those plastic ports get brittle & crack.

I'm guessing they lead to a center port that opens at 50 C so it owuldn't matter which side they were connected????
If it closes at 50 then it would block air from intake manifold...don't know if tthat would be good??

Help...which is it open ir close at 50C...or does it close half of the loop?

Anyway does it matter which port of the TVV it is hooked on???

There is a electrical connection not connected on driver side intake center & a missing connection sort of like a 2 pin female plug also on the drivers side near wall. I have no idea what these were once plugged into.
Also try to hide them from smog eyes...LOL

Great

Is this good? it couldn't feed fuel fumes into air cleaner?

Is leaving it open ok better? its been running with a open black can.
I'm just concerned it could effect vacuum.

Just remebered there is a 5mm metal port coming out of the intake on the back passenger side. It hooks up to a line that runs along back & goes into one of those 4 or 5 otopus connects that go behind firewall toward fuse box...More unchatered territory

Every bit helps
Thanks so much!!!!

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83 500 SEC Euro 198K