Hi I just picked up this 300D it has all the factory manuals and MSRP which according to my old lady is the only reason I bought it... 278k runs nice and definitely needs some maintenance. This weekend I changed the fuel filters and oil. Prior to this there was a nasty oil leak but I figured I’ll clean it all up and it couldn’t be to bad. Well we took it for a decent drive the first time! got on it drove some highway etc well when I pulled it into the garage she’s got a geyser of oil spitting from the turbo drain tube/breather drain tube area. I’ve been reading all night/day regarding the repair.

I feel like I need to drop the pan and service the check valve..or is that going to the last step to fast? Thanks for your time this is my first Benz and I’m in love with it but I’m used to working on land cruiser with gas engines

Attached Thumbnails

 

Something is blocking cc vent.
Or you have a hole in a piston/stuck rings...

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

There is no check valve....

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

WELCOME TO THE ASYLUM ! .

Have at it, like all German cars there are lots and lots of rubber seals and grommets that dry out and leak, be smart and buy the correct factory ones from your Peach Parts, the M-B Classic Center or your dealer (if they can be bothered, many flat refuse) .

Before long you'll have staunched *most* of the leaks, weeps & seeps .

During the process you'll learn how to adjust the valves (*VERY* important, requires specially bent wrenches you can make or buy) , do a "Diesel Purge" and other little things, in time you'll either love the car or make it decent enough to re sell at perhaps 1/2 ~ 2/3 the $ you have invested into it .

I suggest dropping the lower oil pan to do the turbo oil return seals, it's easier to push the lower part up and out with no damage .

Copy and paste how - to information and make up a folder of repairs, you'll get to all of them ere long .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Hmm no check valve at the bottom of the breather tube? This is squirting oil at the connection by bottom of oil pan.. well I will check out if the CC vent is some how clogged any good points to start? Thanks I’m having fun with this car!!

There are two drain back tubes on the North American engines, the larger diameter one is usually the worst leaker, it has no check valve , the other, smaller one might .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

The smaller tube is not there on 85 CA OM617s.

__________________
Milan Brown 1979 240D, rebuilt OM617.952 turbo diesel, rebuilt 722.315 transmission (my only daily driver)

Instagram: @maximed93

Then your job is easier......

Don't get rattled ~ these are well engineered fairly simple cars, designed to be repaired by average Mechanics with a few special tools and here in these forums are detailed descriptions of how to do it and work arounds too .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

so i pulled the filter housing to check the breather tube..well i needed to replace the O ring on the bottom of the tube..after replacing the O ring i blew down the tube and heard some bubbling and found what appears to be a dent/cut out and oil was coming out of it. does not look factory any ideas on how to fix this? has anyone see something like this? if not OH WELL fun times for me LOL

Attached Thumbnails

 

I don't see any dent / cut in the tubes you posted .

That's not very clean either, it takes some time and effort to get these really clean .

? Maybe clean the hole in the metal pipe with brake cleaner then patch with two part epoxy ? .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

The dent is in the aluminum the picture got sideways..yes it will be cleaned up i just picked the car up last week...

Before you run the Car very much be sure to look at the Oil Cooler Hoses. If they are seeping at all change them before you drive it.

__________________
84 300D, 82 Volvo 244Gl Diesel

To much reading is dangerous I’ve added replacing the oil cooler lines, transmission lines,coolant exchange and thermostat...this weekend I will see if my repair will hold on!