M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

Crankcase PCV Valve / Breather Replacement Video

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Nov 18, 2016 | 12:13 PM
  #1  
ml3204me's Avatar
Thread Starter
Member
 
Joined: Jul 2005
Posts: 114
Likes: 24
Crankcase PCV Valve / Breather Replacement Video

Mercedes does not call it a PCV valve; However, the crankcase rebreather valve should be changed at normal maintenance intervals and if you are a DIY type may overlook this. It can cause your air intake manifold to get clogged internally which will lead to broken plastic (externally/internally).

Watch how easy it is to replace in this video:
Reply
Old Nov 18, 2016 | 12:27 PM
  #2  
tritron's Avatar
Member
 
Joined: Nov 2013
Posts: 76
Likes: 3
cl500
Do we need two of those ?
Reply
Old Nov 21, 2016 | 11:25 AM
  #3  
ml3204me's Avatar
Thread Starter
Member
 
Joined: Jul 2005
Posts: 114
Likes: 24
Originally Posted by tritron
Do we need two of those ?
Nope. There is only one.
Reply
Old Feb 13, 2020 | 01:19 AM
  #4  
Erin Haven's Avatar
Newbie
 
Joined: Feb 2020
Posts: 1
Likes: 0
e350
Where do I find info on how to replace the Pcv on my e350
Reply
Old Feb 13, 2020 | 04:38 AM
  #5  
Maj. Dundee's Avatar
MBWorld Fanatic!
 
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
Originally Posted by Erin Haven
Where do I find info on how to replace the Pcv on my e350
You are on the wrong forum. Please post the year of of your E350.
Reply
Old Feb 13, 2020 | 04:32 PM
  #6  
Bobenis's Avatar
Member
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2004
Posts: 159
Likes: 6
From: BC, Canada
2007 ML350 (M272) 30-509034 & 2008 ML320 CDI
Did mine a few weeks ago, knew it needed it as soon as I smelt burning oil.
When they leak they drip right onto the hot cat.
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 05:14 AM.

story-0
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-1
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-2
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-3
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-4
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
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE