Diesel emissions - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 11-28-2006, 10:20 PM Thread Starter
BenzWorld Member
Date registered: Aug 2006
Posts: 60
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Diesel emissions

I'm contemplating the purchase of a diesel 220D. They
emissions test diesels in Arizona, USA where I live.
The test is for '30% opacity of the exhaust plume'.
Anyone got any idea how stringent this is? What kind
of things in the engine would contribute to good or
bad emissions and how expensive would this be to
maintain since they have to be tested every year? I'm
not too familiar with diesels.
Gazolba is offline  
Sponsored Links
post #2 of 6 (permalink) Old 11-28-2006, 11:29 PM
BenzWorld Elite
Kajtek1's Avatar
Date registered: Dec 2005
Vehicle: W211 E320 Bluetec R129 SL500 - $1300 car ........ Ford F350 6l
Location: CA Bay Area
Posts: 31,523
Mentioned: 9 Post(s)
Quoted: 1066 Post(s)
Are you sure they smog diesels in AZ?
They never did in CA. I belive the only thing that can make diesel pollute is damaged, or clogged injectors, or bad timing. They can be rebuild by replacing cheap tips only, but tips are not available for all models.
Kajtek1 is offline  
post #3 of 6 (permalink) Old 11-29-2006, 12:44 PM
BenzWorld Elite
diametricalbenz's Avatar
Date registered: Oct 2005
Vehicle: '77 6.9, 74 240D, 96 Ram 5.9L Cummins, 02 Civic EX, 10 Mazda 5 Sport
Location: Atlanta, GA
Posts: 2,652
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
I think it was mentioned on another thread that 30% is quite horrible. You'll know it when you go see the car. If it's smoking up a storm at idle that's clearly not a car you'd want to own even if it does pass emissions for AZ.

1977 - W116 - 6.9
1974 - W115 - 240D /8 - 4(M) OM617.910 + Turbo + 300D FW - Completed 7/8/10
diametricalbenz is offline  
post #4 of 6 (permalink) Old 11-30-2006, 07:38 PM
BenzWorld Member
SakoTGrimes's Avatar
Date registered: May 2006
Vehicle: 1964 190D
Location: Grants Pass, Oregon, what's left of America
Posts: 102
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Diesels of all flavors, were never required to pass emmisions until recently. I doubt anything you could to to an old diesel would make it pass any emmisions test there is, and therefore it is most likely exempt.
SakoTGrimes is offline  
post #5 of 6 (permalink) Old 11-30-2006, 11:59 PM
BenzWorld Junior Member
Date registered: Nov 2006
Vehicle: 1976 300d @460k
Location: Ann Arbor, MI
Posts: 30
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
if she requires testing you just has to meet the specs for the year she was manufactured. my 76 300D would need to meet diesel emmisions stardards for 1976, seeing that it has no emmisions controls i'm assuming they are very lax. michigan no longer tests but if you want to get her in tip top shape you will need to do a molly injector purge, just search the forum, check your timing.

when i has gravity remove my exhaust for me i accidently stood the muffler up on end as i dodged traffic. i noticed a sizable 30 years worth of soot plume out. its worth a good shake if its removed from the vehicle. running on B20 will cut your emmisions by about 15% save for Nox which will remain + or - 2 percent.

make sure she is nice and warm before the test as well

how would a 70's D stack up against a modern gasser on emisions, anyone have any actual data?
otm646 is offline  
post #6 of 6 (permalink) Old 12-01-2006, 06:03 PM
BenzWorld Member
SakoTGrimes's Avatar
Date registered: May 2006
Vehicle: 1964 190D
Location: Grants Pass, Oregon, what's left of America
Posts: 102
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
I was considering going through emmisions and asking the guy to pretend my car was an 07 Benz diesel, and seeing if it passes running on B99. Might cost $10 though, more than I can afford right now
SakoTGrimes is offline  
Sponsored Links

  Mercedes-Benz Forum > General Mercedes-Benz Forums > Vintage Mercedes-Benz

Quick Reply

Register Now

In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode

    Similar Threads
    Topic Author Forum Replies Last Post
    Passed Emissions! Ramesh W126 S,SE,SEC,SEL,SD,SDL Class 10 08-17-2006 11:42 AM
    emissions inspection steven t lee R170 SLK-Class 1 01-29-2006 12:20 PM
    Emissions Experts? niceride W140 S-Class 6 05-07-2005 03:42 AM
    emissions again saporter W201 190-Class 0 01-11-2004 01:40 PM
    Failed Emissions saporter W201 190-Class 3 01-07-2004 04:57 AM

    Posting Rules  
    You may post new threads
    You may 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 Off
    Trackbacks are On
    Pingbacks are On
    Refbacks are On


    Title goes here

    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome