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 ShopForum > Technical Information and Support > Vintage Mercedes

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-19-2007, 07:56 PM
Registered User
 
Join Date: Mar 2004
Location: Los Angeles
Posts: 99
Black smoke

Wile driving on the freeway around 50mph, I floored and it nicely kicked into 3rd gear. The engine revved to about 5500 rpm and I saw black smoke in the rear view mirror. I did it later again and it was the same. There is no visible smoke on the startup cold or hot. Doesn't burn oil. However, if the car is idling, and is up against a wall you can see black stuff that came out of the exhaust on that wall. It might be running too rich, but could that be the cause of the black smoke during strong acceleration at high rpm? Any thoughts or comments? It's euro specs. M116.

Thanks, Vilius.
__________________
280se 3.5 coupe DB172 anthracite grey
2006 Toyota Avalon Limited
1999 Ford Explorer Limited
Looking for early '60s Vespa 150
Reply With Quote
  #2  
Old 05-19-2007, 08:53 PM
Registered User
 
Join Date: Dec 2006
Location: beautiful Bucks Co, PA
Posts: 961
You need to drive more on the freeway and faster than 50 mph. What you're seeing is carbon build-up being expelled from the exhaust.
Reply With Quote
  #3  
Old 05-19-2007, 11:39 PM
Tomguy's Avatar
Vintage Moderator
 
Join Date: Aug 2002
Location: Not where I want to
Posts: 5,079
D-Jet will do that, especially when you gun it. You do keep your cruise speeds around 70 on the highway at least, right? I used to never have my 4.5 under 80. These cars need to be driven fast, for prolonged periods, to clean up carbon buildups.
__________________
Current:
1999 Chrysler 300M - 211,xxx
2014 Jeep Grand Cherokee Limited - 61,xxx

My Mercedes Benz 108 and 109 resource site

Previous:
1972 280SE 4.5 1992 Jeep Cherokee Laredo "Jeepy"
2006 Charger R/T "Hemi"
Reply With Quote
  #4  
Old 05-19-2007, 11:59 PM
Registered User
 
Join Date: Mar 2004
Location: Los Angeles
Posts: 99
Thanks for responding. Actuly the car wasn't on the freeway for over two weeks, but was driven daily in heavy LA city traffic. Hope that's the problem. When it's on the freeway it's always over 65. It doesn't go any slower .
__________________
280se 3.5 coupe DB172 anthracite grey
2006 Toyota Avalon Limited
1999 Ford Explorer Limited
Looking for early '60s Vespa 150
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 10:39 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page