200cdi coolant loose

[Dugi]

Hi Everybody,
Need some guidance about coolant leak...
Just bought Mercedes c200cdi 2011 automatic...i was very Happy how She drives until i got low level coolant alarm...i top IT up 2 times (around 1 litre) In few houndred kilometars...then i finally found leak under the fuel filter housing...
Can sombody explain me excactly where the LEAK is coming from?...and what part i need?
Apriciate for any help
Ps.It seems a comon issue regarding foruma
Thank you In Advance

 

[grober]

I suspect this is the area where the EGR COOLER resides it has a couple of coolant flexible pipes or the heat exchanger assembly itself is leaking ------maybe thats the source of your leak
Mercedes-Benz OM 651 Service Manual (Page 34 of 58)
here's where it is on the engine.

 

[Dugi]

Tnx for quick reply...very helpfull...
I was reading about that issue so got confused every time when somebody mention fuel filter housing reffering to coolant leak...?
Is the fuel filter cooled somehow by coolant...fuel return?...
Thank you...

 

[Oldlae]

Fuel filter is heated by the hot coolant, leak is from the joint between the cylinder head and the filter housing.
Housing is crap cheap plastic, but a fair bit of labour to replace it with the improved part.
Tony

 

[grober]

Thought it was electrically heated?

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I stand corrected as this video shows in a different model a 516 van but essentailly the same engine I believe??

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[Dugi]

Tnx a lot Appriciate very much

 

[grober]

HERE'S A VIDEO OF THE ASSEMBLY ITSELF part no A6512003900

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[Dugi]

Excactly the part number i got from dealer... (around 40€).I v been told there is a bit of labor (3h) because the fuel rail should be removed first...hope they know the job regardlees the unauthorizade workshope next to my house.
Tnx a lot for help...Hope that is only that one leak there...