First, I have read all the threads I can find on this and car not shuting off.

I still cant figure it out.--------------------------------------------------------------------------------

I have an oil leak at the ignition cylinder and my car is not turning off with the key. The shut off under the hood still works. I replaced the rubber hose at the vacuum line on the side of the injection pump because it seemed loose. I took out the dash cluster and the vacuume lines on the side of the ignition lock cylinder looked good. It seems like oil is leaking from the bottom of the ignition from a slot on the bottom. I took a picture after I wiped it off but not sure how to post it. The key is hard to turn sometimes also. I dont have a way to test the vacuum. should I just replace the vacuum valve on the side of the ignition? Could that cause the ignition to have an oil leak? If my key is hard to turn what part do I replace?
Thanks. car is 1982 300td

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1982 300TD
1973 220D ambulance
1974 240D pick-up

How did you determine that the shut off valve is good? What are the vacuum levels in your vacuum system? Is there oil in the main vacuum lines? Problem is highly unlikely to be in the ignition switch itself. However, you need to fix the hard turning key before it turns for one last time. That is most likely an entirely separate problem.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

I dont know if the shut off valve is good. I was thinking that the valve at the ignition is bad bacause of the leak at the cylinder. What part do I repace to fix the hard turning key? I dont have a vacuum pump so I cant test lines. The oil leak is not at the rubber connections it is at the bottom of the ignition cylinder.

__________________
1982 300TD
1973 220D ambulance
1974 240D pick-up

What did you mean when you said the shut off valve under the hood was good?

Pull the brown shut off valve vacuum line off the shut off valve. Replace it with a clear piece of vacuum hose. With the engine running, suck on that hose. If it shuts off, you have no problem with the shut off valve? If you see oil rising up thru that clear line, you've got a hole in the diaphragm and the valve needs to be replaced. They're expensive.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

There are lots of thread on replacing the ignition tumbler which is probably what needs to be replaced. (or cleaned out and lubricated).

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

I ment that you can shut the car by pressing the shut off under the hood. Are you saying the brown line on the side of the ip or going to the ignition from brake booster

__________________
1982 300TD
1973 220D ambulance
1974 240D pick-up

Brown line on the back of IP down between the IP and the oil filter housing which is where the shut off valve is.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Thanks. where can I get clear vaccum hose?

__________________
1982 300TD
1973 220D ambulance
1974 240D pick-up

It would probably be simpler to put a filter in. See my thread that you posted on. There are several links on there. If.you read them all you will have enough information to fix your problem.

__________________
2009 ML320 Bluetec
1985 300CD
1981 300TD

Past Mercedes
1979 300TD
1982 300TD
2000 E320 4Matic Wagon
1998 E430
1984 300SD
1980 300SD

I saw somthing about a prefilter today. Where do you put it? I thought you had bad rubber lines at ignition? I guess I posted on a different thread than I read yesterday. Thanks and sorry about the mix up. I will try it tomorrow

__________________
1982 300TD
1973 220D ambulance
1974 240D pick-up

Clear plastic line is available at hardware stores.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Read this link for directions and pictures of where to install the filter.
"Hens tooth" 1985 300D vacuum filter dark black


Oil in Engine Shutoff Valve 300sd



.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
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Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

Dont confuse a permanent filter with a temporary filter in a piece of vacuum hose so you can see if the diaphragm is ruptured without sucking oil into your mouth.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Thanks for the help everone. Going to pick up some things tomorrow and try again to figure it out.

__________________
1982 300TD
1973 220D ambulance
1974 240D pick-up

With your wagon, your really should invest in a Mityvac. Far too many vacuum controlled parts in our MB's to be shooting in the dark. Fleecebay is a good place to get them inexpensively.

__________________
1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

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