Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-13-2007, 03:53 AM
MBeige's Avatar
Registered User
 
Join Date: Apr 2005
Location: SoCal
Posts: 3,746
Inline vacuum filter results

I just wanted to share the results I've had with the inline filters I installed in the engine bay vacuum lines. The vacuum setup is entirely stock except with the insertion of the two filters right at the main vacuum line nipples.

The first filter is for the 3/2 valves, part of the transmission, EGR, etc. and it has shown some soot in the lines.

The second filter is for the ACC, door locks, etc. This one is still quite clean, actually.

The filters have been installed for roughly a week. They're originally fuel filters, I found out, but the paper filter inside them looks like it can also filter out the soot. Hopefully I won't see any oil in there in the future...




looks like I'll see if I can plug one or more of the lines and see which ones are iintroducing soot into the system. Is the vacuum line going to the EGR valve directly linked to the whole vacuum system? There's a switch valve on the thermostat housing where the vacuum line from the EGR goes to, and then out towards the 3/2 valves black box, and then to the Y fittings and the filter. I'm curious if there really is a direct link. Hmm...

Reply With Quote
  #2  
Old 09-13-2007, 07:44 AM
Registered User
 
Join Date: Sep 2004
Posts: 8,971
Quote:
Originally Posted by MBeige View Post
Is the vacuum line going to the EGR valve directly linked to the whole vacuum system?
Yes.
Reply With Quote
  #3  
Old 09-13-2007, 08:39 AM
pawoSD's Avatar
Dieselsüchtiger
 
Join Date: Oct 2004
Location: Grand Rapids, MI
Posts: 15,438
Guess I won't have to worry about anything from the EGR....since mine's completely disconnected. (No line to the EGR valve at all...) and I also melted the two lines shut that go to the air box on top of the valve cover.

Something worth noting....the vacuum for the transmission is vented to the atmosphere by a little black tube...which is supposed to end up inside the dash....if its not then it may be sucking in dirty engine compartment air....hence the dirty filter. Just a guess....
__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)
Reply With Quote
  #4  
Old 09-24-2007, 09:56 PM
deerefanatic's Avatar
Diesel & John Deere Nut
 
Join Date: Jul 2005
Location: Sturgis, MI area
Posts: 849
Whunter showed us this trick at our VERY Special First-ever Tri-State GTG, didn't he Pawo?
__________________
-Matt

EPA Section 609 Certified MVAC Technician
-----------------
Oil Burner Kartel Member #10

Ahh the smell of Diesel Fuel, it's like coffee in the morning!

My Car:

1982 300SD Turbo Diesel (231,500 miles!) RIP

1984 300SD Turbo Diesel Custom (235,500 mi on driveline.) - On Road!!

www.icsrepair.com

Reply With Quote
  #5  
Old 09-25-2007, 07:12 AM
running-snail's Avatar
Registered User
 
Join Date: Nov 2004
Location: Michigan
Posts: 288
Another location

Good pics - surprised you're getting that much soot.

I recently replaced my shut-off valves (both at IP and key switch). When I tested the shut off valve at the IP, I drew vacuum with a pump and watched oil run up the vacuum line!

I suspect a decent amount of oil had pulled up that line as it had invaded the key switch valve.

I've thought it might be a good location to place a filter - along the IP shutoff valve line - in the event the diaphram leaks again.

__________________
83 300d - 390k
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 12:58 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page