Go Back  MBWorld.org Forums > Mercedes-Benz Sedans > 190E (W201)
Strong exhaust smell >

Strong exhaust smell

Notices
190E (W201) 1982-1993: 190E 2.3, 190E 2.6, 190E 2.3-16, 190E 2.5-16, 190 D 2.2, 190 D 2.5, 190 D 2.5 TURBO, 190E 2.5-16 Evolution I, 190E 2.5-16 Evolution II

Strong exhaust smell

 
Old 04-11-2017, 05:29 AM
  #1  
Newbie
Thread Starter
 
Join Date: Apr 2017
Posts: 6
Likes: 0
Liked 0 Times in 0 Posts
190E 2.0
Strong exhaust smell

Hi!
I have a 1985 190E (90kw, NON-Kat, M-102 equipped).
She was burning oil, so I took the occasion and had the head gasket replaced, head rebuilt, camshaft replaced, valve seals and many other components renewed/replaced.
Spark and spark cabled are new, fuel pump is new.
I have checked all the holes in trunk, and everything is ok.

The problem is that I have a strong exhaust smell, which invade also the cabin (especially with windows/sunroof opened).
It is really annoying, and I checked and re-checked all the components; muffler is ok.

The smell is like un-burned fuel (as rich mixture), but she doesn't use too much fuel, and CO2 is ok; the car doesn't use any oil either.
I checked EHA valve (and replaced o-rings), but no leaks was present.

I also tried to extend the exhaust, but nothing changed.
It doesn't seem coming from engine bay.

So, problems are basically two:
-exhaust smell is really strong (my friend recognized me from 500 meters)
-it shouldn't enter in the cabin, even stopped at a traffic light.

Any suggestion would be appreciated.

Thank you!
david986 is offline  
Old 04-11-2017, 04:25 PM
  #2  
Out Of Control!!
 
Join Date: Feb 2011
Location: Tampa
Posts: 11,731
Liked 577 Times in 560 Posts
1999 E300TD
If you really want an answer, put he car on a lift use a sniffer to locate the exhaust leak and then repair the leak or continue to talk about the exhaust smell and do nothing!!
Plutoe is offline  
Old 04-19-2017, 01:58 AM
  #3  
Junior Member
 
Sport line's Avatar
 
Join Date: Apr 2017
Posts: 15
Likes: 0
Liked 1 Time in 1 Post
1993 190e 2.6 Sportline
Might be wise to check the egr valve.
Sport line is offline  
Old 04-19-2017, 07:31 AM
  #4  
Newbie
Thread Starter
 
Join Date: Apr 2017
Posts: 6
Likes: 0
Liked 0 Times in 0 Posts
190E 2.0
Originally Posted by Plutoe View Post
If you really want an answer, put he car on a lift use a sniffer to locate the exhaust leak and then repair the leak or continue to talk about the exhaust smell and do nothing!!
Well, I wrote here in order to have tips, not blames.

I head the whole exhaust cheeked by 2 mechanics, and they didn't find any leak, as already said.

Moreover, even with a leak, smell shouldn't be that strong.
david986 is offline  
Old 04-19-2017, 07:33 AM
  #5  
Newbie
Thread Starter
 
Join Date: Apr 2017
Posts: 6
Likes: 0
Liked 0 Times in 0 Posts
190E 2.0
Originally Posted by Sport line View Post
Might be wise to check the egr valve.
Mines is not Kat, I'm not sure I have an EGR or something like that...
Where should I find it?
​​
david986 is offline  
Old 04-19-2017, 10:23 AM
  #6  
Junior Member
 
Sport line's Avatar
 
Join Date: Apr 2017
Posts: 15
Likes: 0
Liked 1 Time in 1 Post
1993 190e 2.6 Sportline
Originally Posted by david986 View Post
Mines is not Kat, I'm not sure I have an EGR or something like that...
Where should I find it?
​​
if you can smell it the leak is in the front of the car. The egr is mounted on the exhaust manifold.
Sport line is offline  
Old 05-26-2017, 05:23 PM
  #7  
Newbie
Thread Starter
 
Join Date: Apr 2017
Posts: 6
Likes: 0
Liked 0 Times in 0 Posts
190E 2.0
I replaced the whole exhaust line, but nothing changed.

I'm unable to use the car without getting intoxicated.

Any help?
david986 is offline  
Old 03-20-2018, 02:41 PM
  #8  
Member
 
Redwood415's Avatar
 
Join Date: Sep 2016
Location: Stockton CA
Posts: 140
Liked 8 Times in 7 Posts
92 W124 500E, 93 W201 190E, 11 C207 E350, 05 W211 E55
overly rich running condition is caused by a problem with your CIS fuel distributor, can you find a replacement at a wrecker?
Redwood415 is offline  
Old 03-20-2018, 06:49 PM
  #9  
Newbie
Thread Starter
 
Join Date: Apr 2017
Posts: 6
Likes: 0
Liked 0 Times in 0 Posts
190E 2.0
Originally Posted by Redwood415 View Post
overly rich running condition is caused by a problem with your CIS fuel distributor, can you find a replacement at a wrecker?
Thank you, Redwood, for your reply.

I was told by 2 expert mechs, that CIS is ok, but I'm starting to doubt it.
As far as I know, they set just the Co "by hear", listening the idling and so on, saying that the car is old and non-kat, so smell is normal.
I have to say that the engine is running good, smooth and powerful from 1.000 to 5.000rpm; no smoke or high fuel consumption.
I'm also wondering something is wrong with distributor, because at last State inspection, I had a Co2 of 7.1 VS limit of 3.5.... I took for granted that mech did this check, but as a matter of fact, they didn't.

Now, I was also thinking about replace my fuel injectors (I've been told they might be the cause of hard start when warm; fuel accumulator is new), so I will have my CIS fixed, and keep my finger crossed.

Here in Northern Italy, it is almost impossible a scrap yard unit; old Benzs are sent to Africa.
Is it possible to rebuilt my unit, or once defected is better to find a new/used one?

This guy, near my city, overhaul the CIS distributors, but I do not have any feedback concerning the results

https://www.facebook.com/K-Jetronic-...3728020855702/
david986 is offline  
 

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: