W211 - OM642 - Blue Smoke After Long Idle

alistairi

New Member
Joined
Oct 15, 2014
Messages
14
Car
E320 sport
Hi,

I have a 2005 E350 CDI W211 with around 140K on the clock. The car generally drives fine but I've had an ongoing issue with the car putting out white smoke after a long idle or drive in slow moving stop/start traffic. Once the car is driven hard the smoke quickly disappears, only to come back the next time I spend more than a few minutes in traffic.

I've replaced the turbo and the inlet shutoff motor and checked the seal where the air intake joins the turbo. I've also cleaned our the intecooler and the 'charge air pipe'.

I'm now stumped as to what to look at next - does anyone have any ideas?

Thanks,
 

louwdj

Member
Joined
Sep 8, 2008
Messages
57
Location
Johanesburg, South Africa
Car
W460 1989 230GE; W123 1982 230E; W203 2004 C220Cdi; W204 2009 C220; W416 1978 Unimogdi
White smoke likely to be unburned diesel. Car at operating temperature? Run Star diagnostics see what comes up?
 

BIG_G_1979

Active Member
Joined
Apr 3, 2014
Messages
922
Location
N.Ireland
Car
E280 CDI SPORT
Hi,

I have a 2005 E350 CDI W211 with around 140K on the clock. The car generally drives fine but I've had an ongoing issue with the car putting out white smoke after a long idle or drive in slow moving stop/start traffic. Once the car is driven hard the smoke quickly disappears, only to come back the next time I spend more than a few minutes in traffic.

I've replaced the turbo and the inlet shutoff motor and checked the seal where the air intake joins the turbo. I've also cleaned our the intecooler and the 'charge air pipe'.

I'm now stumped as to what to look at next - does anyone have any ideas?

Thanks,

What and where is the charge air pipe?
 

BIG_G_1979

Active Member
Joined
Apr 3, 2014
Messages
922
Location
N.Ireland
Car
E280 CDI SPORT
Charge pipe is the aluminium one that come out of turbo and into intercooler the out and into inlet.
Thanks and does this fill with oil? Only asking is that I've just changed by v ribbed drive belt and have disconnected the black pipe from the charge pipe and was gonna refit tomorrow but whilst I have it dismantled I could take charge pipe off too if needs must
 

kid-jensen

MB Enthusiast
Joined
Dec 16, 2002
Messages
1,237
Location
Epsom Downs
Car
ML 320 W164
Your title says blus Smoke but the text says white.

The cause would normally be different, which is it?
 

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