Hi,

There has, for a long time, been oil and crud on the body of my wastegate (or whatever the actual thing that the wastegate hose physically attaches to down below the turbo). I have been hearing a hissing sound lately, so I got around today to replacing the wastegate hose (which did not fix it, BTW... oh well...).

WHen poking around down there getting dirty, I wanted to figure out where the oil was leaking from. I do not know the technical terms, so Ill try to explain it:

-there is the turbo, which has the wastegate hose coming from it. It is a whitish colored metal (Maybe Al). Behind that is a thin round tube, and then a bigger, rusty colored donut-shaped casing, similar to the turbo one, but larger (I guess that is the exhaust turbine?).

-The leak is coming from the rear of the first casing (The white metal, which I assume is the intake turbine). It drips directly down onto the wastegate related piece below.

BTW, there was a coating of oil inside the old wastegate hose, and on both nipples that the hose attached to.

What is the culprit?



Also, unrelated, the EGR-related part on my 83 is oily. The part that is oily is at the top, above the flexed silver tube. It has a vacuum hose coing into the side at the top. There are two bolts that attach two pieces of the valve together, and the right side bolt area is quite oily and gritty. Perhaps it is from a leaky valvecover gasket from long ago, but I dont think so. Can anyone suggest what this might be?

I am sorry to not know the exact technical terms. I would post pics, but my digital cam just died

Any help is most appreciated.

JMH

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

I also have a prety bad leak on the turbo side of the engine, just now in the cleaning and isolation diagnostic stage. Did you ever get an answer or a solution to your own? thanks

cant help with the turbo, but the egr..

Mine started leaking a lot a few days ago. There is a hole and a large slot on the underside of the egr that seems to leak under certain conditions. I fixed mine by cutting a old cookie baking sheet to the diamond size of the connection to the intake manifold. (just unbolt the egr, slip it in, bolt it back down.) Seems to have fixed it. by the way, disconnect the egr if you havent already... just causes more problems.

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Paul
2004 E500 4matic; 72,000mi