250 cdi W212 Can someone help me with injectors

Matej09

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W212 2009 e250cdi
Hello, i own a E class W212 2009 250cdi with Om651 engine but since cold weather started i have a injector knocking noise until it warms up.
So my question is what injector do i need i mean part number or is there really a need to code it.

Injectors that i have have this P/n A6510702887
So my question is should i search injectors by just that part number only?

Please if someone with more knowledge can help.

My Vin WDD2120031A007704

Thanks.
 

Gazwould

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C250 CDI
Diagnostics confirm this ?
 
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Matej09

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Diagnostics confirm this ?
No noise in idle when cold just in 1500 2000rpm level you can hear a clear sound of injector knocking, oil pressure good if it was a lets say rod it would have a deep tone and it would do it all the time, car has 290k Km on clock original injectors. No errors stored. My older w211 sounded the same it was 1 faulty injector which caused the knocking.

Connected autel scan tool and ther should be max -10/+10 correction value and one of injectors sometimes goes a bit above that range.But then again service guy said that thats not reliable to see which one is faulty with diag. Tool and he also says that that sound is faulty injector knocking.

At 0:38 same sound as mine

Video for example at 0:38 exact noise as mine like a lifter.
 
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mersum1es

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W212/-09/350CDI, W219/-07/320CDI, EX:W220/-01/320CDI, EX:W211/-04/320CDI, EX:W210/-01/270CDI
Engineer stethoscope (or just a wooden stick) and listen which one is giving the noise.

Sorry can't help with part numbers, I have no EPC currently on. But coding highly recommended.
 
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Matej09

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Engineer stethoscope (or just a wooden stick) and listen which one is giving the noise.

Sorry can't help with part numbers, I have no EPC currently on. But coding highly recommended.
Ok, thank you. I just wanted to know since there are alot of people here with alot of knowledge of MB to help if there is maybe a new pn for injectors or if there is some number on injector that i should know before buying.

Best regards.
 
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