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 08-04-2014, 09:40 PM
JordaanDMC-12's Avatar
Registered User
 
Join Date: May 2008
Location: Anchorage, Alaska
Posts: 766
TONS of black smoke on w115

Hey all,

So our 1970 220 has kind of been undriveable because it emits so much black smoke. I know these things smoke, but there shouldn't this much at all, there will be a small bit of white smoke and then after that it's just huge clouds of black smoke. She wasn't always this bad, but has gradually gotten to this point. My dad and I think it could be the injectors since we're pretty sure they're the originals but it could be anything I guess.. Where should we start looking? When you accelerate is when you get the black clouds but at idle or cruising on the highway she's decent-to little to none. It was so bad going up a hill that a cop had pulled over my dad about it.. We've kind of just pushed our 220 aside because of this, but I'm thinking of possibly using her as a daily driver and maybe taking her up north with me if I get accepted into the school I'll be applying for, but I need to get this smoke issue fixed. Any input is greatly appreciated!

__________________
2007 BMW 328XI
Reply With Quote
  #2  
Old 08-04-2014, 09:47 PM
Registered User
 
Join Date: Apr 2011
Location: SF, CA, USA
Posts: 935
i would adjust the valves, install rebuilt injectors, and make sure your timing chain is in shape. not sure what order to put those in, but they will almost certainly help a lot.
__________________
'77 240D, 504H, OM617.952, etc.
Reply With Quote
  #3  
Old 08-05-2014, 07:04 AM
Registered User
 
Join Date: Dec 2005
Location: Carson City, NV
Posts: 3,850
Air filter? You may have the oil bath kind. I've never messed with one that old.
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
Reply With Quote
  #4  
Old 08-05-2014, 09:42 AM
noahlambert's Avatar
Registered User
 
Join Date: Jan 2014
Location: Peoria, IL
Posts: 102
Have you tested the vacuum regulator diaphragm and housing for leaks?
Reply With Quote
  #5  
Old 08-05-2014, 02:07 PM
Registered User
 
Join Date: Jul 2008
Posts: 3,740
You can have a bad governor diaphragm on the rear of the inject pump and you can also have a bad vacuum pump diaphragm. Agreed the oil bath filter can also be all gunked up too.
__________________
Reply With Quote
  #6  
Old 08-06-2014, 02:11 PM
JordaanDMC-12's Avatar
Registered User
 
Join Date: May 2008
Location: Anchorage, Alaska
Posts: 766
Thanks guys, I'll start there, probably with a valve adjustment, we hadn't done one since 2009 and I don't think we got a very good one then. We do have the oil bath filter but I've cleaned it already a few times so I think that should be okay, although I wish I could get a new one.. I wonder if Mercedes would be able to get them or the MB classic center?
__________________
2007 BMW 328XI
Reply With Quote
  #7  
Old 08-06-2014, 02:13 PM
JordaanDMC-12's Avatar
Registered User
 
Join Date: May 2008
Location: Anchorage, Alaska
Posts: 766
Quote:
Originally Posted by noahlambert View Post
Have you tested the vacuum regulator diaphragm and housing for leaks?
No, but I'll check them out today hopefully

__________________
2007 BMW 328XI
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 03:19 PM.


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