OM651 oil leak

[CowleyStJames]

My 2011 E Class 250 with OM651 engine has an oil leak at back of engine.
Any known places with these engines that are known to leak?
Thinking timing chain cover, any thoughts.

 

[star]

They leak from lots of places, seen cracked heads, rear timing case cracked from worn chain, cracked sumps, loose chain tensioner but most oil leaks are from front, oil cooler area.

 

[CowleyStJames]

Turned out to be the oil filter housing leaking. New one fitted and all good

 

[star]

Yes the housing and cooler are one.

 

[CowleyStJames]

Yes the housing and cooler are one.

Does the oil filter housing incorporate the oil cooler? I guess it gets a coolant feed then?
Have you got a diagram, picture?
Like to understand these things

 

[star]

 

[ajlsl600]

bet thats a few bob ?

 

[CowleyStJames]

View attachment 57824

Thanks star

 

[CowleyStJames]

bet thats a few bob ?

Genuine part about £100 and four hours labour

 

[ajlsl600]

can i ask where/why was it leaking ? O ring/gasket i would get,if made properly and fitted correctly should not be leaking anywhere else , i suppose its possible over tightening filter or stress trying to loosen could crack something ??

 

[star]

The “O” rings flatten and go hard. Not available separately.

 

[ajlsl600]

The “O” rings flatten and go hard. No available separately.

yr jokin ! cant get the o rings ,without buying the whole assly , i would consider that downright robbery !! and i find (no offence intended ) that really hard to understand .. .so when doing eng overhaul the seals are not in a full overhaul or top end gasket set ?

 

[star]

yr jokin ! cant get the o rings ,without buying the whole assly , i would consider that downright robbery !! and i find (no offence intended ) that really hard to understand .. .so when doing eng overhaul the seals are not in a full overhaul or top end gasket set ?

No offence taken, I don’t make/sell the parts. If less work was involved, I would source a replacement o ring.

 

[ajlsl600]

next time i get bored i will make a point of looking those seals . and keeping , somewhere i cant find em ,when the time comes to replace them. i have lots of stuff like that !!!

 

[Dolar100]

Elring 867.720​