C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Probably a stupid question

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jan 2, 2016 | 09:58 PM
  #1  
Marketbuy's Avatar
Thread Starter
Newbie
 
Joined: Jan 2016
Posts: 3
Likes: 0
2003 C230 Coupe , 2009 BMW 328i
Probably a stupid question

Hey guys, just picked up a 2003 C230 Kompressor for the wife.

All seems good, no issues but got it home and noticed a vacuum line unplugged from a part of the engine that I don't know what is.

Can one of you let me know a) what the round brass colored component is just to the front left off the side of the engine and b) if the vacuum hose that forms a hard 'U' into place being unplugged would cause any issues?

Image attached - Yellow arrow is the line that was pulled out. What is the component circled in red?

Thanks guys!
Attached Thumbnails Probably a stupid question-1.8-b.jpg  
Reply
Old Jan 3, 2016 | 12:47 AM
  #2  
VVF's Avatar
VVF
MBWorld Fanatic!
 
Joined: Sep 2011
Posts: 1,657
Likes: 35
From: Austin, TX
2005 C230K(sold), Mk7 Jetta
Here is the info: https://mbworld.org/forums/c-class-w...hose-m271.html

If the vacuum hose is unplugged from anything you will have a vacuum leak first thing.
Reply
Old Jan 3, 2016 | 12:58 AM
  #3  
Marketbuy's Avatar
Thread Starter
Newbie
 
Joined: Jan 2016
Posts: 3
Likes: 0
2003 C230 Coupe , 2009 BMW 328i
Thanks

Thanks for the information VVF. Much appreciated!
Reply
Old Jan 3, 2016 | 12:59 AM
  #4  
Rocman8's Avatar
MBWorld Fanatic!
 
Joined: Nov 2014
Posts: 1,139
Likes: 77
E55
its the secondary air injection diverter valve. just plug it back in so you dont get a check engine light otherwise no issues will be noticed since its only for reducing emissions.
Reply
Old Jan 3, 2016 | 01:02 AM
  #5  
Rocman8's Avatar
MBWorld Fanatic!
 
Joined: Nov 2014
Posts: 1,139
Likes: 77
E55
the vacuum hose that was unplugged is after the switchover valve so it wouldnt cause a vacuum leak unless its actually running the secondary air test which is on cold start and before the engine is in closed loop so there wont be any driveability issues anyways.
Reply
Old Jan 3, 2016 | 01:10 AM
  #6  
Marketbuy's Avatar
Thread Starter
Newbie
 
Joined: Jan 2016
Posts: 3
Likes: 0
2003 C230 Coupe , 2009 BMW 328i
Thanks Rocman, appreciated.
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 12:15 PM.

story-0
New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

Slideshow: Mercedes-AMG's updated GLE 63 S and GLS 63 bring a new-generation V8, subtle design revisions, and familiar supercar-rivaling performance figures.

By Verdad Gallardo | 2026-06-17 12:52:51


VIEW MORE
story-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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