Smoke! Every morning! Help identifying a possible leak?
Thread Starter
Member
Joined: May 2015
Posts: 132
Likes: 1
2000 C230 Kompressor
Smoke! Every morning! Help identifying a possible leak?
Well, video is worth a thousand words so here you go:
It's on the passenger side (US model) of the engine bay. It smokes after the car has been sitting for a while but makes no smoke after the first 15 mins.
I am very bad at identifying parts but I think I see the exhaust pipe underneath a black connector. That's approximately where the smoke comes from. Is there a known issue with this area of engine bay?
My best guess is that there is a leak nearby so when the exhaust gets hot it burns off whatever fluid dripped onto it. I found a wet spot in that area too before it got burned off.
So can someone with knowledge help identify the plausible cause for the smoke? Much appreciated.
It's on the passenger side (US model) of the engine bay. It smokes after the car has been sitting for a while but makes no smoke after the first 15 mins.
I am very bad at identifying parts but I think I see the exhaust pipe underneath a black connector. That's approximately where the smoke comes from. Is there a known issue with this area of engine bay?
My best guess is that there is a leak nearby so when the exhaust gets hot it burns off whatever fluid dripped onto it. I found a wet spot in that area too before it got burned off.
So can someone with knowledge help identify the plausible cause for the smoke? Much appreciated.
MBWorld Fanatic!
Joined: Aug 2013
Posts: 1,364
Likes: 149
2012 C300 4MATIC Sport
Can you remove the plastic engine cover so we/you can see better and exactly where the smoke is coming from? You can search on youtube how to remove the plastic engine cover. It's very easy.
Member
Joined: Feb 2016
Posts: 121
Likes: 17
From: Northeast
2008 C300 Sport
Originally Posted by MBENZTECH
It's the centrifuge cover leaking oil onto the exhaust. Also known as the oii and air separator. Replace it along with all the camshaft plugs.
Thread Starter
Member
Joined: May 2015
Posts: 132
Likes: 1
2000 C230 Kompressor
So is there one on each side of the engine?
https://photos.app.*******/Yj23qDS98FRJk2Ea8
The first pic is on the driver's side, the other two are on the passenger side. I am about to place an order for parts.
Btw, youtube video shows 6-star nuts but mine are screws. Wonder why.
Is this the right part?
https://www.fcpeuro.com/products/mer...ebi-2720100631
https://photos.app.*******/Yj23qDS98FRJk2Ea8
The first pic is on the driver's side, the other two are on the passenger side. I am about to place an order for parts.
Btw, youtube video shows 6-star nuts but mine are screws. Wonder why.
Is this the right part?
https://www.fcpeuro.com/products/mer...ebi-2720100631
Last edited by ihaveaquestion; Jan 30, 2019 at 06:06 PM.
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Super Member
Joined: Jun 2017
Posts: 608
Likes: 107
From: Western NC
2009 MB C300 Sport 4matic
My 57K mile C300 has started to give off a mild burning oil smell in that same area since the temps have been in the teens when starting up...a finger swipe around the air/oil separator shows no obvious oil, just a minimal greasy smear but sure that this is the source as in your case. I already changed out the cam plug on that side months ago. Thicker cold oil with a higher initial start pressure I assume is the reason since on warmer days I don't smell anything. I have been too lazy to remove the under cladding to see if there is another leak area.
Thread Starter
Member
Joined: May 2015
Posts: 132
Likes: 1
2000 C230 Kompressor
Honest to god! Anything involved with working so closely to the back firewall is just calling for pain!
First it was the coolant temp sensor and now this! Took me 4 hours to take 4 screws off. Now they are off, I don't want to put them back on because I have stripped a couple of them in the process. If anyone know the correct size of the screw ( not nut) or where to get them please let me know.
A tip for future DIYer - Small adjustable wrench on a T30 screw bit will work wonder...
Peace.
First it was the coolant temp sensor and now this! Took me 4 hours to take 4 screws off. Now they are off, I don't want to put them back on because I have stripped a couple of them in the process. If anyone know the correct size of the screw ( not nut) or where to get them please let me know.
A tip for future DIYer - Small adjustable wrench on a T30 screw bit will work wonder...
Peace.
Thread Starter
Member
Joined: May 2015
Posts: 132
Likes: 1
2000 C230 Kompressor
Btw, I notice the new part has more rubber in the middle:
https://photos.app.*******/53EVTNQ7pW5bXQRY6
Is this normal? I find it a little hard to install the new part due to more rubber in the middle...are we supposed to force it in?
https://photos.app.*******/53EVTNQ7pW5bXQRY6
Is this normal? I find it a little hard to install the new part due to more rubber in the middle...are we supposed to force it in?
