the smell of exhaust fumes in the cabin
Thread Starter
Member
Joined: Aug 2020
Posts: 91
Likes: 5
w203, E230 W210
the smell of exhaust fumes in the cabin
Hi,
well let’s start with the problems.
not long ago I became the owner of a 220 cdi, 2006 and I noticed that through the ventilation of the air conditioning even while driving, exhaust fumes are coming. Where could you get it from? It's very annoying because I've had a headache a few times after driving.
any suggestion?
well let’s start with the problems.
not long ago I became the owner of a 220 cdi, 2006 and I noticed that through the ventilation of the air conditioning even while driving, exhaust fumes are coming. Where could you get it from? It's very annoying because I've had a headache a few times after driving.
any suggestion?
Last edited by cylaptor; Jan 31, 2021 at 10:43 AM.
MBWorld Fanatic!
Joined: Dec 2003
Posts: 3,275
Likes: 236
From: BC, Canada
2003 C230K Coupe Orion Blue
There are several sources of fumes. I have a different engine (M271 gasoline) but this should point you in the right direction.
First place I would look is the exhaust manifold. These are known for cracking as the engine mounts wear out and sag over time, creating some bending stress in the pipe. For my engine, the exhaust pipe does not have any flexible section designed in. If you a find a crack there, repair the crack (weld or epoxy) and replace the engine mounts as well.
In my case there was also a cracked crankcase breather check valve, mentioned farther down in the same thread. I don't know if your engine has something similar, though I imagine it probably does.
Good luck.
First place I would look is the exhaust manifold. These are known for cracking as the engine mounts wear out and sag over time, creating some bending stress in the pipe. For my engine, the exhaust pipe does not have any flexible section designed in. If you a find a crack there, repair the crack (weld or epoxy) and replace the engine mounts as well.
In my case there was also a cracked crankcase breather check valve, mentioned farther down in the same thread. I don't know if your engine has something similar, though I imagine it probably does.
Good luck.
Last edited by slammer111; Feb 1, 2021 at 06:29 AM.
Newbie
Joined: Jan 2024
Posts: 2
Likes: 0
MB C230 (W203) M272
I had this exhaust smell in the cab for several months and could not locate the fault. Now, when I decided to change the spark plugs, one of the spark plugs was so loose that you could twist it out by hand. This was the cause of the smell, now the plugs have been replaced, the smell problem no longer exists. My motor is M272,
