250TD Turbo problems

[firstrugby]

My C Class 250TD is putting oil into the turbo air system. I have been told this may be as a result of a leak in the oil seal in the turbo. There is no smoking at the exhaust and the amount of oil is relative little however it is leaking at the jubilee clips and dripping down unto the turbo. Has anyone had this problem and how was it fixed? Do I need to replace the turbo and if so does it need to be done immediately?

 

[Parrot of Doom]

ASAP really, you don't want a runaway diesel on your hands.

 

[firstrugby]

What do you mean " a runaway diesel on my hands"? Have you had this problem?

 

[television]

My C Class 250TD is putting oil into the turbo air system. I have been told this may be as a result of a leak in the oil seal in the turbo. There is no smoking at the exhaust and the amount of oil is relative little however it is leaking at the jubilee clips and dripping down unto the turbo. Has anyone had this problem and how was it fixed? Do I need to replace the turbo and if so does it need to be done immediately?

Any chance that you could go to. right hand side you will see turbo charger
http://www.detali.ru/cat/oem_mb0.asp?TP=1

And tell us where the oil is leaking, Can you give number on diagram

Malcolm

 

[Parrot of Doom]

What do you mean " a runaway diesel on my hands"? Have you had this problem?

A diesel engine doesn't need a spark to run. If you've got oil leaking into the cylinders, it won't need diesel either. Diesels work by compression (same principle as when you're pumping a bicycle tyre up and the nozzle gets warm).

What 'can' happen is that you're driving along as normal, you get to your destination and remove the key, only the engine doesn't turn off because there is enough oil leaking into the cylinders to keep it fuelled and running. It can lead to your engine heading for the great scrapyard in the sky if not sorted.

I don't want to panic you, but if theres oil leaking in, get it sorted or the bill could end up being much more expensive. Of course yours might only be leaking a small amount, but leaks tend to get larger with time

 

[firstrugby]

Turbo Problems

Any chance that you could go to. right hand side you will see turbo charger
http://www.detali.ru/cat/oem_mb0.asp?TP=1

And tell us where the oil is leaking, Can you give number on diagram

Malcolm

Oil is collecting in the hose (53) mixing chamber and there is a slight dampness at the loom tie (56).

The amount of oil involved is about a teaspoonful over 500 miles.

 

[230K]

Hi

I think you will find they all do it and not to worry, my E300DT messes up the inlet manifold something to do with the EGR but i have heard of another 250DT thatb when the intercooler pipe was taken off oil ran out.

230K

 

[television]

You did not put up the right numbers for a c class 250 td, but as 230K says I do not think that anything is wrong.

malcolm

 

[firstrugby]

Thanks for all your help guys. I've also been told by a merc technician to be careful not to put too much oil in these engines as this can lead to the same type of prob or worse. Anyhow there does not appear to be a huge problem. Again many thanks

 

[Jay Kilby]

A diesel engine doesn't need a spark to run. If you've got oil leaking into the cylinders, it won't need diesel either. Diesels work by compression (same principle as when you're pumping a bicycle tyre up and the nozzle gets warm).

What 'can' happen is that you're driving along as normal, you get to your destination and remove the key, only the engine doesn't turn off because there is enough oil leaking into the cylinders to keep it fuelled and running. It can lead to your engine heading for the great scrapyard in the sky if not sorted.

I don't want to panic you, but if theres oil leaking in, get it sorted or the bill could end up being much more expensive. Of course yours might only be leaking a small amount, but leaks tend to get larger with time

this happened to a freind of mine the leak was from the turbo which acted like a fuel pump the ****** thing kept going until it used all the oil then seized, at first Vauxhal tried to claim it had seized because he had not put any oil in, he had to explain what had happened again they did not belive him until the unit was taken out and stripped down!!

 

[firstrugby]

Hi guys I'm getting more confused by the day. Maybe this will help.

There is no evidence of the thing losing or using oil. Over the last 500/600 miles the dipstick is static.
I removed the flexible hose at the front of the turbo and checked the fins for play. (none or very little)
There was a little oil in the turbo where the flexible hose clips on.
At the MOT 2 weeks ago the emmission levels were fine.
The is no smoke from the exhaust under heavy acceleration.
If the oil was getting to the cylinders I would have thought the emmissions levels would rise and there would be a great deal of smoke under acceleration.

 

[Jay Kilby]

Do not get confused if you work on the priciple that fluid leaking from anywere is not right and you check everything out you are on the right track. but remember if there is oil comming from your turbo housing something that is ment to pevent this is starting to fail, so i would advise you keep a close eye on it to make sure it gets no worse, if it does then get it fixed before the worst can happen. it could remain like that for years wiith no problems, i think all we are warning you is what can happen when things are left unchecked.

 

[firstrugby]

Cheers to all!

 

[psmart]

No point starting a new thread....

...as this one is on the right track... runaway diesels.

I've been looking into various American resources as to my problems with the Boost Pressure Transducer, Shrill Noise etc, and the BenzWorld forum put the shivers up me!

A number of Americans have had runaway diesels, but not in such a nice fashion described by Jay Kilby, of which I have had two occurrences.

Basically, twice (2-3 months ago), when hard accelerating, the car just accelerated, one occasions nearly ramming a car in front. I thought the pedal had stuck, but it hadnt, and only holding my foot as hard as I could on the brake eventually saw the engine stop. On the American forums, this is the prelude to the big one, where the engine never stops until all oil in the sump has been consumed!

Has anybody got experience of modern merc engines running away, and if so, can you shed some light?

 

[television]

If you have 8 liters of oil,in the engine, work out how far you can on 8 liters that will give you stopping distance, or the distance from the car in front.
problem solved

Malcolm

 

[psmart]

If you have 8 liters of oil,in the engine, work out how far you can on 8 liters that will give you stopping distance, or the distance from the car in front.
problem solved

Malcolm

I'll be sure to let George B know when he drives my ML back from the Zell this weekend (as I have to drive the PHGV). A 65 year old doing more than 50mph.... damn, that will be interesting

 

[teddybear]

oil leak on turbo pipes

I have a C250 Turbodiesel and a few days after I purchased it I found oil & swarf around the pipe between the main intake and the Turbo.
Oil levels were OK returned car to dealer in panic as It was my first diesel Mercedes and I feared a big bill vehicle had done 65K.
They had done a service and the hose clips were not sealing the pipe correctly. Pipe had gone hard with normal ageing. New pipe & clips fitted leak solved, since done further 18k without problems. All turbos use a small quantity of oil mine use about a litre in 10k.