E-Class (W211) 2003-2009

Knocking noise from 2004 E320 cdi

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Sep 17, 2023 | 09:39 PM
  #1  
K13's Avatar
K13
Thread Starter
Newbie
 
Joined: Aug 2023
Posts: 2
Likes: 0
2004 E320 Cdi
Knocking noise from 2004 E320 cdi

Would like to know if anyone has had this noise and what the cause of it is, had some people say its the injectors and some say its the tappets, would like to know before I get into the engine.

https://reddit.com/r/test/s/ab6hsfxDZw
Reply
Old Sep 20, 2023 | 05:23 PM
  #2  
ptkacik's Avatar
Senior Member
10 Year Member
Liked
 
Joined: Aug 2014
Posts: 338
Likes: 20
From: Charlotte, NC
2005 E320 CDI, 2015 GLA 250
The sound does not play for me.

My 2005 CDI with 245,000 miles seems pretty quiet; however, it is a diesel so it is an inherently clattery engine. Do you have the engine cover on? It is packed with sound absorbing material.

Peter
Reply
Old Sep 21, 2023 | 10:14 PM
  #3  
ot1's Avatar
ot1
Super Member
 
Joined: Apr 2007
Posts: 633
Likes: 48
From: USA
2006 E320 CDI
Originally Posted by K13
Would like to know if anyone has had this noise and what the cause of it is, had some people say its the injectors and some say its the tappets, would like to know before I get into the engine.

https://reddit.com/r/test/s/ab6hsfxDZw
Definitely much louder than my 2006 om648. I hear metal on metal. I think you need to zero in where that noise is coming from waving your smart phone around with camera recording…what about the high pressure fuel pump? Remember the mics are at the bottom of the phone and camera lens is at the top.
Reply
Old Jun 25, 2024 | 11:02 PM
  #4  
natef91's Avatar
Newbie
 
Joined: Jun 2024
Posts: 1
Likes: 0
e320 cdi
Originally Posted by K13
Would like to know if anyone has had this noise and what the cause of it is, had some people say its the injectors and some say its the tappets, would like to know before I get into the engine.

https://reddit.com/r/test/s/ab6hsfxDZw
did you ever find a solution? Going through the same thing right now and I’m losing my mind trying to find it
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 04:48 PM.

story-0
8 Oddball Mercedes Ideas That Actually Made it to Production

Slideshow: Mercedes has never been afraid to experiment, and some of its strangest ideas turned out to be surprisingly successful.

By Verdad Gallardo | 2026-06-10 17:43:40


VIEW MORE
story-1
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

Sideshow: A Middle Eastern tuner has transformed the Mercedes-AMG G 63 into an open-top special, replacing nearly every exterior panel in the process.

By Verdad Gallardo | 2026-06-10 15:29:50


VIEW MORE
story-2
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-3
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-4
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-5
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-6
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-7
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-8
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-9
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE