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  #1  
Old 04-24-2009, 11:27 PM
I love German Cars
 
Join Date: May 2008
Location: USR, NJ
Posts: 101
Weird oil leak E320 Coupe 1994

Anyone aware of oil leaking from here?



I think it could explain this thread i posted in benzworld:
http://www.benzworld.org/forums/w124-e-ce-d-td-class/1434656-need-help.html

or seeing visible smoke from the back when I stretch the legs of the coupe (90+ MPH for longer than 5 miles), which makes sense because when you push the car a lot, oil pressure gets high and could be leaking out of these vacuum ports.

that said, when I took the intake housing off, it was really dirty with oil and the MAF was covered in dirty oil as well, and you can see the same dirtyness on the butterfly valve of the throttle actuator.

What are the best ways to clean them out?

I also have developed a very slight rough idle and took the intake off to look at the ignition coils but spotted the above dirtyness.

The idle isn't really really rough like its about to conk out and the car shakes a lot, its just there are visible yet very very subtle inconsistencies in idle RPM sometimes, and you can feel the engine kicking very very subtly like theres a very small misfire. It does not inhibit driving at all but it just doesnt idle as smoothly as it used to. Motor mounts were done just last year and this rough idle doesn't happen all the time.

Could the dirty MAF cause the rough idle? How do I fix that oil leak?
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1975 W116 280S - SOLD
1994 W124 E320 Coupe - Gone

CURRENT - 1974 450SEL
https://i.imgur.com/OvWvqLM.jpg
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  #2  
Old 04-25-2009, 05:29 PM
I love German Cars
 
Join Date: May 2008
Location: USR, NJ
Posts: 101
bump....
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1975 W116 280S - SOLD
1994 W124 E320 Coupe - Gone

CURRENT - 1974 450SEL
https://i.imgur.com/OvWvqLM.jpg
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  #3  
Old 04-25-2009, 06:03 PM
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Join Date: Aug 1999
Location: Florida / N.H.
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My first check would be the TSB Bulletin concerning oil level...they want the oil level on that chassis to NEVER be past the 1/2 way Mark with engine up to temp and a 2 min wait for the check.
There was a capacity change on that version to lessen cap by 1/2 ltr.

The skip is most likely the plug connectors under the coils.
Any codes??
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  #4  
Old 04-26-2009, 05:07 PM
I love German Cars
 
Join Date: May 2008
Location: USR, NJ
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No codes. What's the TSB bulletin?

Car is serviced by Mercedes Certified specialist, and oil pressure has never been an issue. Car is almost flawless with the way I take care of it,
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1975 W116 280S - SOLD
1994 W124 E320 Coupe - Gone

CURRENT - 1974 450SEL
https://i.imgur.com/OvWvqLM.jpg
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  #5  
Old 04-26-2009, 07:06 PM
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Join Date: Aug 1999
Location: Florida / N.H.
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<>

TSB # 00/134 -18/45
Effective 12/95

Reduced oil capacity/104 engine .
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  #6  
Old 04-28-2009, 12:23 AM
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Join Date: May 2007
Location: New Jersey
Posts: 95
Please message me if you resolve this issue as I have the same exact issues you have mentioned (just that my car is 94 e320 sedan). The smoke has occurred to me a few times after high speed driving, I also have the slight idle issue when car warms up, and I found oil in the same spots with some oil on the spark plug connector for spark plug closest to the firewall (cylinder #6 i believe). The last time I saw the smoke was last summer. For me the smoke occurred on days with hot temperatures outside or it could have coincided with the same oil change that was the culprit. I was going to replace the valve cover gasket and get the kit that comes with 6 little rings for each cylinder.
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