Oil blown up through deepstick hole

[Murman]

Hello everybody!

I got a problem, was driving in normal conditions (well it was suddenly -7, actually) and got -1.5 L oil on the display. I opened the boot and it was all covered in oil. I had to fill 4 liters to get back to normal.

I do understand it is something to do with crankcase breather, but I can't really find it. There is no direct description of this problem on fantastic Lofty's pages, which I studied a lot. It seems like it is somewhere on this pic http://aclassinfo.co.uk/DSC08895.JPG or here http://aclassinfo.co.uk/DSC08893.JPG

Can you suggest what and where should be cleaned to avoid such problems in the future?

P.S. I own A-140 (1999-160,000 km) for 4 years, changed both chains, lock on left back door, plastic gearshift thing, front breakdiscs etc.

[lofty]

If recall correctly without looking the breather pipe is inline with and below the ECU, in severe cases this can get filled up with oil emulsion that could cause you problem althtough i have never heard of such a severe reaction.
For such a situation to arise I would be thinking more along the line of sticky piston rings allowing the compression in the pots to reach the sump .
I hope I'm wrong, it is worth checking the crankcase breather pipe first
You don't say what happened after you replaced the oil?
Bearing in mind the sump only holds 4.5 litres to start with .

I trust the sump wasn't heavily overfilled that would also cause your problem

This photo on page 38 shows the pipe concerned .I would be inclined to take the ecu off and make surethe pipe marked (1) clean I'd use another piece of flexipolythene tube to ensure it clear. rag for cleaning is not a good idea for cleaning in case it gets hooked on obstructions.
http://www.aclassinfo.co.uk/DSC08603.JPG
http://www.aclassinfo.co.uk/mypage.38.htm

Please don't forget the feed back, we don't want to encounter this one to often makes the engine messy.
Just as a point of interest was your dip stick fitted and pushed fully home?

[Murman]

Thanks for reply, Lofty!

It happened just in the time when I had to change oil. I added oil but changed it again after 2 weeks and changed the oil filter.

The oil level during the accident was normal. The coolant level and the exost smoke was and is also ok.

The same problem happened to other owners due to the dirty breather pipe, I read on Russian forums. But I decided to post here anyway.

I will feedback after I get to the problem. Do I have to take away some parts to get to that pipe? I mean the complete casing of the air filter.

The deepstick was always pushed deeply home during the use. But when after the accident I opened the boot it was up. It alsow destroyed some soft boot inner isolation, what says about a quite serios "explosion". I could not hear it anyway.

[lofty]

Good job the engine oil level light came on or you would have wanted a new Engine!

If you use the information on page 38 you can remove the ECU and then cpmpletly clear that ipe BUT as you have changed the oil I wouldn't now be too concerned .

If you want to check it anyway follow the intructions for removing the ECU and then the pipe that goes to the crankcase will be in you view and accessable

[stass-ka7]

Good afternoon. I write to you from Belarus. At me Mercedes А160 of 1999. Several months ago at us all oil has flowed out and we cleaned ventilation gases. Then oil periodically appeared on a cowl. But oil level did not change. Antifreeze too was in norm. The indicator of the raised level of oil several days ago has lighted up.
Oils became more. Antifreeze became little bit less. In what our problem? How it to remove? What reasons for it promoted? Advise please, that to us to do.
Thanks.

[lofty]

Have you noticed any loss of power is the engine running OK?

You will need to watch for water in the oil as it sounds as though you may have a head gasket problem .
This is not common on the A class so keep a close eye on the water /antifreeze level and also reduce the oil level to the top mark on the dip stick .
Normally one would associate a head gasket promlem with a poorly running engine loss of power
But if the oil oil is contaminated you should change it then watch it closely if it becomes further contaminated with water the case then you will need to replace the head gasket .
but make sure that is the problem before you touch anything.
You could get a garage not MB to do a pressure test on the 4 pots that would indicate if the gasket had gone on the compression side. oil in the water /water in the oil is the best indicator of the gasket having blown on the water jacket part of the gasket .
Either way don't let it go on too long, water and engine componets big end shells etc don't mix and you will cause other problems .

Don't confuse the emuslsion in the filler neck of the filler tube with a head gasket problem , this is common on the A class due the the long filler neck and water /oil emulsion is common, you can wipe the biggest of that away with a clean cloth.

[stass-ka7]

Thanks you for the reply. I am sorry for my English. The matter is that more recently we have replaced in the car a belt. The car began to work much more silently. But now often we hear knock under a cowl. It is connected with oil level?
How much difficult and expensive repair of a lining?
Thanks