The previous owner of my 300d 1980 automatic had half of the vac lines disc. I've finally got them all back where they go, but the black vac line that comes off the side of the vac valve on the IP doesn't connect to anything as it leads under the dash. The same line on my manual 240d 82 disapears up toward the steering column. Does it need to be plugged or does it have a specific place to connect to. Thanks for any help you can give. RAY M

it goes to nothing and is not supposed to be connected to anything. search "black vacuum line" and you'll see tons of topics similar to this.

__________________


1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

Thanks
I'll try that search again. I must not have gone deep enough in the post that came up on my search. In that case why is there a vacuum line at all. Is it to keep it from getting dirt in the line. Is it ok to plug this line. I'll look perhaps the answers are in the post in the search. I'll get back with what I find. Thanks for your time Johnhef. RAYM

No, don't plug it. It is a vent line for the vacuum control valve. It terminates in the cabin so that it will be exposed to cleaner air the in would be in the engine compartment.

Thanks Tangofox RAY M