CLK-Class (W209) 2003 on: CLK 270 CDI, CLK 200K, CLK 200 CGI, CLK 240, CLK 320, CLK 350, CLK 500, CLK 550 [Coupes & Cabriolets]

knocking sound

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Old 10-15-2002, 11:51 PM
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clk 500
knocking sound

i have the clk500 and with the radio turned down, when accelerating from a stop, i hear a knocking sound. it sounds similar to that of a diesel engine. but when i get up to about 30mph, it goes away. any suggestions?????
Old 10-16-2002, 08:23 AM
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Hate to say this, buy my wife's 2001 C240 makes the same sound.
Old 10-16-2002, 11:12 AM
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Dealer says that is normal...something to do with the fuel injectors.
Old 10-16-2002, 11:16 AM
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1993 MERCEDES BENZ 300TE
front or rear ,,left or right,,any other info ,,i will try to find out for you
Old 10-16-2002, 06:27 PM
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2002 CLK 55 AMG Coupe ;)
Re: knocking sound

Originally posted by MARK335
i have the clk500 and with the radio turned down, when accelerating from a stop, i hear a knocking sound. it sounds similar to that of a diesel engine. but when i get up to about 30mph, it goes away. any suggestions?????
If it is a TICKING sound, there are a LOT of complaints re the new E500 as well.

There is even a service bulletin re engine mounts...

Here is just one of many threads re the "sound effects" problem from the NEW E-CLASS mbworld forum:

https://mbworld.org/forums/showthrea...threadid=19605
Old 10-16-2002, 06:55 PM
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Wait...

My wife's 2001 C240 has two sounds...


1) Clicking (Almost a valve chatter when idle)


2) Ticking (Dealer fixed this twice, it was a purge valve I believe)
Old 10-16-2002, 11:44 PM
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clk 500
dsmit,
it sounds as if its coming from the engine. i only hear it when mildly accelerating from a stop. cars too new to jump on it.

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