But RPM's started dropping about two weeks ago..
W203 Black smoke, bad idle
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Mercedes-Benz C220 W203
W203 Black smoke, bad idle
Hello everyone, I am writing for Lithuania to your forum, because I do not really know what to do. 
1)About couple months ago my MB w203 C220 CDI started dropping through exhaust a lot of black smokes, mostly of them on 700-3500Rpm's(kickdown). Maybe it could be an EGR valve or maybe something else? Where it is?
2)Another problem.. On the cold engine(idle), engine starts droping RPM's from 700 to about 500 RPM and it repeats about every 30-45 seconds.
Thanks a lot for answers!
1)About couple months ago my MB w203 C220 CDI started dropping through exhaust a lot of black smokes, mostly of them on 700-3500Rpm's(kickdown). Maybe it could be an EGR valve or maybe something else? Where it is?
2)Another problem.. On the cold engine(idle), engine starts droping RPM's from 700 to about 500 RPM and it repeats about every 30-45 seconds.
Thanks a lot for answers!
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Mercedes-Benz C220 W203
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From: Newcastle Upon Tyne
W204 C220CDI 2011
Black smoke in a diesel is almost always insufficient air and is usually caused by a boost leak.
Check the ducting from the turbo to the intercooler to the intake manifold for leaks, and the intercooler itself.
rgds
Check the ducting from the turbo to the intercooler to the intake manifold for leaks, and the intercooler itself.
rgds
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Mercedes-Benz C220 W203
Today I was checking and i found this: it can cause black smokes?
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Mercedes-Benz C220 W203
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Mercedes-Benz C220 W203
Hey, I put some duct tape on that, ant it did not help me anyways... So i removed an EGR Valve and black smoke was mostly reduces so additional to this I put Chip Tuning. But anyways, bad idle on cold engine has the same problem, it do not make any changes... So any tips?
