black smoke

[Ermir]

Hi guys, i have a c class 220 cdi avantgade 2003, with no pdf.
I have recently note that too much black smoke come out of the exhaust when accelerating especially on the second gear(manual transmission, 6 gears).
Everything else is O.K. No oils consumption, filters changed regularly, good injectors, MB genuine oil, etc. Even on idle it seems to me to smoky!
Do u have an idea?
Thank you in advance!

 

[Iceviolet]

Have you checked the EGR valve is not choked?
Also check there are no boost leaks on the pipework anywhere.

 

[Ermir]

I have cleaned the EGR and it is in perfect conditions. The inlet manifold was really dirty but it can be cleaned. Anyway ill check the pipes but i have not noticed anything unusual. Thanks

 

[dinoy]

get catcleaner from eurocarparts to clean exhaust system and cats from clogging

 

[Ermir]

Do you think the problem is in the exhaust?

 

[savinda92]

Check the injectors.

 

[grumpyoldgit]

Have you tried an Italian Tune Up?

Drive it like its been stolen for a few miles. That should clear the system.

 

[1001ab]

Have you tried an Italian Tune Up?

Drive it like its been stolen for a few miles. That should clear the system.

+1
If it's an auto, try and hold in a lower gear than you normally would.
I did this for my Mother In Law's S211 a couple of times, as far as she's concerned I took it to my workshop and did some actual work on it.
Mega brownie points.

 

[dinoy]

you have carbon in the system which is in engine and exhaust system using cat cleaner so clean everything save you having to put new cats in the near future

 

[Ermir]

you have carbon in the system which is in engine and exhaust system using cat cleaner so clean everything save you having to put new cats in the near future

I havenever heard about the cat cleaner. How can i use it, is it a diy work? Where is it inserted or put? Thanks.

 

[Ermir]

Have you tried an Italian Tune Up?

Drive it like its been stolen for a few miles. That should clear the system.

Lol. Italians are really crazy drivers. Actually i have bought the car in italy so i think that italian guy has done this job for quite long. Lol. Ill try anyway. Thanks.