W212 OM651 significant oil leak

Sander1337

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My W212 E220 came back from service today after a gearbox oil replace. She drives smooth again if not for the enginemounts to be slightly worn (will do them soon).

The MB specialist also mentioned the car had developed a significant oil leak (couple of drops, about half liter per 10.000 km) somewhere near the air intake on the drivers side (that is the left side).

He could not pintpoint the leak exactly as there were many parts in the way so had to reschedule for an appointment anyway, but he suspected the air-intake.

I will check the engine bay myself over the weekend, but before I take apart the entire intake side of the engine, are there any obvious culprits that I can easily check myself? Anyone any tips in finding this issue before I take it back to the dealership?
 
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Sander1337

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Also anyone any idea's how much hours it would take to dig myself a way to the air intake?
 

ajlsl600

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clk3202001,sl6002003 with everything regrettably sold ,A class 170cdi auto. NG/TF1800 ML250
Old car 6,spanners 2 hr engine out £30per hr
Modern car esp benz 100 tools 10 special . even the f plastic is held with 8mm,pozzy,torx, plastic pins .cant they make their xxxxing mind up ! 3 hr before u see engine another 3 to get it out £100 per hr !!then 50quid for all the plastic fasteners that break
Progress for who ???
 

ajlsl600

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Sander1337

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I found that my oil level was slightly on the high side (not sure if I did that or it happend on the fly), could it be that it leaked through the cam-ventilation or something?
 

ajlsl600

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I found that my oil level was slightly on the high side (not sure if I did that or it happend on the fly), could it be that it leaked through the cam-ventilation or something?
Dont think so. Monitor level for a few days.likely u slightly overfilled and all warm oil now in sump.use electric pump to take a bit out.worst scenario diesel gettin in oil.
 

David White

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Also anyone any idea's how much hours it would take to dig myself a way to the air intake?
Did you find was the cause of your issue?

Mine could be the same

It is an S212 E250 and has an oil leak that looks like its coming from the intake but difficult to see in situ..

I also have an error P228100 From my Icarsoft, (the intake air system is leaking between MAF and throttle valve..)

it drives fine though only noticed it because of oil on the drive
 

David White

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Sure it's not coming from the oil filter housing/cooler? It's common and close to that area.
Thanks for the reply

I think theres a good chance that it is the filter housing, watching a video of someone replacing it now, looks a nightmare

any idea what i should be paying to repair it and if i need a main dealer or should a local garage be trusted with it? it looks beyond what i would attempt these days.

its a shame that you are so far away i am in solihull else i would bring it straight to you!
 

alexanderfoti

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It is a pain, 4/5 hour job really.

I'd find a local mb specialist. All the seals will need to be replaced, and it's possible a locale type garage would reuse r5.
 

David White

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It is a pain, 4/5 hour job really.

I'd find a local mb specialist. All the seals will need to be replaced, and it's possible a locale type garage would reuse r5.
Thank You again

will look into it tomorrow,

Just one more thing, Would this cause the air intake error ?
 

David White

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Thanks for the video ....

I'll check my pipes
 

Larkone

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The splits are very hard to see when the pipes are on the car - smoke test is the way to go.
 

ajlsl600

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As is make em properly then they don't split!!!
 

ajlsl600

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I am from construction, mining equipment. I think I have had to change boost pipes 1 time and change repair intercooler 2 x
Like all today pipe spec is prob warranty plus 6 months.
 

ajlsl600

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Grand. 0m651 seem grand at plenty miles, use, not so much as run around. Had benz advised car likely headache on shorter runs I likely wud not hav bought it at the time My 20 Yr old w208 was and had been running 90% trouble free
 

David White

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Thanks for the video ....

I'll check my pipes
Got the oil cooler replaced, garage said they couldnt see an obvious leak on the intercooler pipes

Bought a cheap smoke tester, found a split in the pipe after the intercooler

Just ordered a new one

Thanks for all the help here guys
 

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