oil in breather system

chalcedony-blue

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#1 Today, 03:19 PM
chalcedony-blue
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oil in air intake breather system

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Hello again

I posted a question yesterday regarding removing the front bumper on my 230clk kompressor cabriolet. The reason i need to do this is because I have oil in my breather system, we , thats me, a female, and my good old dad, who is long past retirement age, firsly changed the crank shaft sensor as that is the error code thats stored, bruised hands later, all done but car still running and starting rough! Found oil in breather system and have followed jiminessex very helpful post on the subject.All is clean and back together but we have not cleaned the pipe that joins the left section to the right section of the breather system,( sorry im no mechanic, so dont know the official names of these things, please bare with me) that runs along the inside of the front bumper. The reason for this is we have no clue how to remove the bumper, looks pretty major! Television replied to me and said he can give me the information i need but will be a couple of days as he has computer probs! Can anyone please tell me, is it absolutly nessecary to clean this pipe, my dad has run couple of little diy tests and no oil seems to be present there, but if it is important to do, is the only way to do it by removing the front bumper????
Thanks to you all, this is such a great site

Chalcedony-blue
 

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I now have the paper to remove the bumper, it will give you something to do, would I do that, to clean the pipe, for all there could be in it I do not think so.

Shame that I do not have your Email address as I could send it to you
 
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chalcedony-blue

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thanks malcom think we are going to try it without cleaning that pipe, but could you send me the paper just in case we do please:)
 
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television

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Congratulations you are the 2000th person that I have sent information to, no prizes.

You can go to your last post and in "edit" remove your address
 
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chalcedony-blue

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thanks

thankyou so much for your help:D it is very much appreciated.
glad i was your 2000th , you are a busy man!!
 

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thankyou so much for your help:D it is very much appreciated.
glad i was your 2000th , you are a busy man!!

Just reduced to a pen pusher these days, but tomorrow may be better;):D:D.

Its a pleasure to help
 
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chalcedony-blue

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more questions

Whilst im picking your brains, im guessing i will need to get engine diagnostic light turned off, im assuming it doesnt go off on its own?? Did I possibly change the crnkshaft sensor for no reason and would diagnostic machine shown error for crankshaft sensor even though the problem now seems to have been this oil contamination in breather system??

Hope im not being a pain, and no shame in being a pen pusher, im sure there are 2000 people out there very appreciative of your guidance:D
 

television

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The crankshaft sensor would not leave a fault code, but the O2 sensor would, and this needs to be turned off on STAR.

Sorry if you changed the CPS

Sometimes the O2 sensor will burn itself clean though I have only seen 3 cars in the last 3 years do that, if the car drives fine you could see how it goes.
 
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chalcedony-blue

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code p300

Are well im a bit confused, on the diagnostic machine it showed the code p300 I believe and said crankshaft sensor, hence why we changed it. Where and what is the 02 sensor, i have read alot of posts on this site that mention that?? By the way the machine was not at a mercedes garage just a general repair and mot testing station.

Julie
 
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chalcedony-blue

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o2 senser

Hi Malcolm
:Oops:
its ok I think I have worked out that the o2 sensor is the same thing as the maf sensor? If thats the case then I know where that is and the little nodule on mine was black:!!
 

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Its just that when the CPS fails they cannot normally leave a code as nothing is working when this is at fault, well this is the way that I see it and what I have seen on here.

Oil getting into the intake will work its way through the engine and get burnt and it will contaminate the O2 sensor, the O2 sensor shifts from its stored setting to try and adjust the fuel air ratio.

It is the job of the O2 sensor to keep the fuel air ratio in form,it sits in the exhaust manifold and measures the burnt fuel, if the exhaust gas is too weak or too strong, then it will adjust the mixture accordingly. It can only do this over a certain range, when burnt oil comes through it can shift the sensor too far and the lamp comes on
 

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The MAF is in the air intake, the 02 sensors are situated before and after the CAT.
 
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chalcedony-blue

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thanks

thanks for the help guys. I will look into the o2 sensor today;)
 
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chalcedony-blue

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clk looking good

Hello again,

well took my car for a run today, absolutly no problems, started first time and everytime:D. Kept it smooth and steady, did not go over 3500 revs. My dad is going to have a look tomorrow to see if any oil returned anywhere, if all is clear we will go for a drive and take the car up through the revs, this is when prior to the cleaning of breather system etc, we had problems. We do have one concern, if anyone can advise me? The connector on the front of the camshaft was full of oil, we cleaned it out. We have been advised to change the magnet and the connector and wire ( rang mb today, they have both parts in stock).Dont want to change these without first knowing where the oil is coming out of the camshaft and how we would go about fixing the problem, is it related to what we have already done or is there a seal or gasket or something we should replace??? Sorry if im stating or asking the obvious but im new at this, im learning though, starting to understand how this engine of mine works:D:D
Any help will be gratefully received.
Thanks

Chalcedony blue
 

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You need to change the seal and harness to do a good job
 
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chalcedony-blue

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thanks again malcolm, we will do, by the harness do you mean the wire and connector i am talking about and is there a camshaft sensor we should change? Should we also change magnet??
 

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thanks again malcolm, we will do, by the harness do you mean the wire and connector i am talking about and is there a camshaft sensor we should change? Should we also change magnet??

I do not think that you must change the magnet, just the seal and harness, the reason we change the harness is that they can give aggro for months
 
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chalcedony-blue

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thank you so much, will do this and let you know how we get on,

Many many thanks
 
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chalcedony-blue

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hi malcolm sorry just spoke to my dad, where is the seal???
 

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It is a 2 pin socket on the front timing cover, at top front
 

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