2015 Mercedes C220d Bluetec bad Knocking sound

[KumarK]

I have a 2015 Mercedes C220d Bluetec with 55000 on the clock. My car has a bad knocking sound from the engine. I called a few Mechanics and some say bottom end other say fuel injectors, I am some what confused as to the exact cuase or problem. Can anyone help please.

 

[KumarK]

I also have a video clip but unsure how to post the Video

 

[AMGeed]

I also have a video clip but unsure how to post the Video

Upload it to Youtube and post a link.
I'd have the car transported to a Mercedes specialist for diagnosis. Don't risk driving it if it is the bottom end is knocking.
If your location is the Barnet postcode, get it to Terry at Wayne Gates in Harrow. He can give you a proper diagnosis.

Wayne Gates Specializing in Mercedes-Benz Servicing & Repairs

The Independent Merc Specialist you can trust. Based in Harrow, Middlesex servicing the surrounding areas and Hertfordshire. Call now to book

www.mercservicing.co.uk

 

[Gazwould]

I have a 2015 Mercedes C220d Bluetec with 55000 on the clock. My car has a bad knocking sound from the engine. I called a few Mechanics and some say bottom end other say fuel injectors, I am some what confused as to the exact cuase or problem. Can anyone help please.

1950cc OM654 engine ?

 

[KumarK]

1950cc OM654 engine ?

No its a Om651 91 Engine

 

[Gazwould]

OK , would of been simple fault to explain if it was an OM654 .

 

[KumarK]

Upload it to Youtube and post a link.
I'd have the car transported to a Mercedes specialist for diagnosis. Don't risk driving it if it is the bottom end is knocking.
If your location is the Barnet postcode, get it to Terry at Wayne Gates in Harrow. He can give you a proper diagnosis.

Wayne Gates Specializing in Mercedes-Benz Servicing & Repairs

The Independent Merc Specialist you can trust. Based in Harrow, Middlesex servicing the surrounding areas and Hertfordshire. Call now to book

www.mercservicing.co.uk

Thanks I havent been driving it since heard the knocking sound

 

[KumarK]

Upload it to Youtube and post a link.
I'd have the car transported to a Mercedes specialist for diagnosis. Don't risk driving it if it is the bottom end is knocking.
If your location is the Barnet postcode, get it to Terry at Wayne Gates in Harrow. He can give you a proper diagnosis.

https://www.mercservicing.co.uk/[/URLHere is the video click via Youtube

[QUOTE="AMGeed, post: 3153705, member: 21572"] https://youtu.be/D-P8Ja6OdOQ [/QUOTE]

 

[KumarK]

OK , would of been simple fault to explain if it was an OM654 .

Sorry I ment the Engine is a 651 921

 

[KumarK]

I have managed to upload the video via youtube.

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[Trickythemerc]

Don't drive that anywhere... Till you get a proper diagnosis, sounds pretty terminal to me.

 

[KennyN]

I have managed to upload the video via youtube.

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Not an expert in such things but it sounds (from the vid played through a laptop) like some serious big end noise , dont think its an injector unless it has fallen into the engine .

You did the correct thing not driving it.

K

 

[KumarK]

Not an expert in such things but it sounds (from the vid played through a laptop) like some serious big end noise , dont think its an injector unless it has fallen into the engine .

You did the correct thing not driving it.

K

Thanks, I am gonna have the car towed to Wayne Gates as soon as I can arrange an appiontment.

Hopefully the problem is not to expensive,.

Hate to sound so daft but whats that "Big Ends Noise" mean

 

[Trickythemerc]

Bottom end crank shaft bearing failure. Pretty major job to fix, basically its the bearing on the con rod that is connected to the piston. If it lets go you will have a rod out of the side of the block.

 

[pcthrillrider]

sounds camshaft related to me, to slow to be bigeng or main bearing's also big end wil be more noisey under load

 

[mioba]

Thats not a good sound.

Hope you are sorted and back on the road soon. Good luck.

May be worth asking the indy if he can arrange a collection.

 

[jbeare13]

What was the outcome of the knocking? Thanks

 

[KumarK]

I had the engine fully refurbished. Was offered a second hand one with low miles, but decided to go for a full rebuild.

 

[jbeare13]

I had the engine fully refurbished. Was offered a second hand one with low miles, but decided to go for a full rebuild.

Did they say the cause of it as I have one with the same noise and for the life of me can’t find out why

 

[KumarK]

What was the outcome of the knocking? Than

Honestly I did not ask and they did not say

kI