Intermitent Sound Like a Milk Float

[whoji]

Hello, I have a 2000 C200 Sport Komp Auto.

I developed this fault today Intermitentley A loud buzzing occurs when driving. It increases in pitch with revs. I have located it to the very top on the engine, by the red part.

I havent a clue, any ideas?

 

[Dieselman]

It sounds like it's engine speed related so must be part of the main mechanicals.
Get this checked out as it could be something like a loose timing chain or broken chain guide.

If you're really lucky it might just be the top cover is loose and vibrating, but I doubt it.

 

[grober]

Problem with electrical camshaft advance /retard mechanism??

 

[Alps]

r u sure the sound isnt coming from bad earth on your stereo via your car speakers?

 

[whoji]

Its gradually got worse today so i took it to Robin Lamb in gloucester, he seems to think its the Kompressor, what do you think?

I only bought the car 6 days ago and done 200 miles in it - Oh well S£!T happens!

 

[BlackC55]

The bearings get noisy. I think they are available seperatly.

 

[Bobby Dazzler]

If it is a bearing...

I believe dealers only replace the entire supercharger, and won't replace only the bearing. I've read of people doing a DIY replacement in the US, using an off-the-shelf bearing for the C32 - can't imagine it's much different for the other engines. Apparently some have had local repair shops complete the whole job for $100.

Try the US forums like www.benzword.org and have a sniff around.

 

[whoji]

It seems strange that it is the Kompressor because there was no loss of performance etc. And no warning lights came on. There was just this bloody annoying noise.

 

[Parrot of Doom]

Private or trade sale? If trade, get them to fix it.

 

[jaymanek]

well a bearing wouldnt cause any issues apart from noise and its a known fault on the kompressors...

 

[whoji]

A new development, after exploration it was found to be the altenator. The shaft and front bearing assembly had dismantled, its being refurbished as we speak.