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]

Spark Plugs

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Old May 2, 2021 | 06:16 PM
  #1  
paulmj1's Avatar
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From: Tucson, Arizona
2004 CLK320 Cab, 2020 GLE350
Spark Plugs

My 2004 CLK320 (purchased new) is getting on to 100K miles. Mercedes recommends spark plug replacement. The car runs great, very smooth at idle. Should I let sleeping dogs lie or follow the book?
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Old May 8, 2021 | 10:33 AM
  #2  
Yomama604's Avatar
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2006 CLK350
I would do it. It's a very simple and inexpensive maintenance item. An easy DIYer.



Originally Posted by paulmj1
My 2004 CLK320 (purchased new) is getting on to 100K miles. Mercedes recommends spark plug replacement. The car runs great, very smooth at idle. Should I let sleeping dogs lie or follow the book?
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Old May 8, 2021 | 07:45 PM
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nkx1's Avatar
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2010 E550 Coupe
Spark plugs are incredibly easy (I did it quickly in my apartment carport, and I'm no expert). Might as well clean the throttle body a bit and the MAF while you're in there.

Last edited by nkx1; May 8, 2021 at 09:21 PM.
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Old Sep 11, 2021 | 10:06 PM
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MB-1's Avatar
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CLK
generally change mines every 20.000 / 30.000 kms, and for me the best ones are the original ones, with other brands... never get so smooth like mb plugs, maybe expensive, but in my opinion they worth the price
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Old Sep 13, 2021 | 06:03 AM
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amusa's Avatar
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16 GLE400 4matic
Easy haha the back one on the V8 (CLK500) closer to the firewall was a nightmare for me.
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Old Sep 13, 2021 | 11:51 AM
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2010 E550 Coupe
Maybe the 550 has more open access. It was really easy.
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