oil leaking from top of dipstick......please help - Mercedes-Benz Forum

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 15 (permalink) Old 06-20-2012, 04:52 PM Thread Starter
BenzWorld Junior Member
 
Date registered: Jun 2012
Posts: 6
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
oil leaking from top of dipstick......please help

I determined that oil is leaking from my dip stick. I have done a few searches online and one possible cause might be the crank case ventilation. I removed the PCV and it doesn't appear to be clogged or stuck. I don't know what else could be wrong. My car died on me a few days ago going to work. i've posted this thread on other forums but no help. please i need some advice.

1997 C230
140K
Attached Thumbnails
Click image for larger version

Name:	IMG_0273 copy.jpg
Views:	263
Size:	98.6 KB
ID:	451374   Click image for larger version

Name:	IMG_0275 copy.jpg
Views:	628
Size:	75.6 KB
ID:	451375   Click image for larger version

Name:	IMG_0276 copy.jpg
Views:	343
Size:	91.5 KB
ID:	451376   Click image for larger version

Name:	IMG_0282 copy.jpg
Views:	245
Size:	84.0 KB
ID:	451377   Click image for larger version

Name:	IMG_0293 copy.jpg
Views:	170
Size:	73.5 KB
ID:	451378  

seattle_202 is offline  
Sponsored Links
Advertisement
 
post #2 of 15 (permalink) Old 06-20-2012, 05:49 PM
Outstanding Contributor
 
keyhole's Avatar
 
Date registered: Sep 2006
Vehicle: 2004 CLK 240 Coupe
Location: Norfolk. UK
Posts: 10,463
Mentioned: 10 Post(s)
Quoted: 356 Post(s)
Hi. This post would have been better placed in the W202 forum where the other C230 guys hang out...

Just a suggestion. Your oil pressure from the pump is controlled by the 'oil pressure relief valve'. If that has failed, you could be getting excess oil pressure that is causing your overflow from the dipstick tube.

This relief valve is accessed by removing the engine pan - not a job to be taken lightly, as it entails lifting the engine.
keyhole is online now  
post #3 of 15 (permalink) Old 06-20-2012, 06:31 PM Thread Starter
BenzWorld Junior Member
 
Date registered: Jun 2012
Posts: 6
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Quote:
Originally Posted by keyhole View Post
Hi. This post would have been better placed in the W202 forum where the other C230 guys hang out...

Just a suggestion. Your oil pressure from the pump is controlled by the 'oil pressure relief valve'. If that has failed, you could be getting excess oil pressure that is causing your overflow from the dipstick tube.

This relief valve is accessed by removing the engine pan - not a job to be taken lightly, as it entails lifting the engine.
hey keyhole. thanks for the info. its the best answer ive gotten so far. yes i know i couldve posted this thread in the w202 forum but i figure since the M111 engine is used on several chassis i figure i would get more response if posted in the "general" section.

anyways is this something that i can do myself? ive consider removing the oil pan before this and i know that the front sway bar and steering dampener are blocking it if i remember correctly. there can still be a few more things that im missing. is lifting the engine the only way of removing the oil pan? or can i just remove these components?
seattle_202 is offline  
post #4 of 15 (permalink) Old 06-20-2012, 06:46 PM Thread Starter
BenzWorld Junior Member
 
Date registered: Jun 2012
Posts: 6
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
**update**

finally got around to removing the spark plug cover and valve cover and it wasnt a pretty sight. oil had filled all 4 spark plug holes. i thought the rings were busted but it cant be all 4 simultaneously. the pressure have to had pusehed the oil up into the spark plug cover. if im wrong please tell me.

also i wondered if any of my exhaust valves were stuck open causing the excessive pressure if thats even possible. i took a feeler gauge and measured in between the cams and the "striker plate" if thats what you call it and got .036 in. i dont know what the specs are but thats what i got +/- .002 in. on both the intake vavle and exhaust valve.
Attached Thumbnails
Click image for larger version

Name:	IMG_0364 copy.jpg
Views:	666
Size:	103.7 KB
ID:	451397   Click image for larger version

Name:	IMG_0357 copy.jpg
Views:	285
Size:	70.1 KB
ID:	451398   Click image for larger version

Name:	IMG_0354 copy.jpg
Views:	142
Size:	45.3 KB
ID:	451399   Click image for larger version

Name:	IMG_0352 copy.jpg
Views:	154
Size:	67.0 KB
ID:	451400  
seattle_202 is offline  
post #5 of 15 (permalink) Old 06-20-2012, 07:33 PM
Lifetime Premium Member
 
Date registered: May 2004
Vehicle: 1985 190E2.6(junked), 1995c220, 2000CLK430(totaled), 2001C240, 2009 CLS
Location: beringia
Posts: 421
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Lifetime Premium Member
Have you done a compression test? I still believe it's blow-by, if ext valve open it'll backfire. I think the oil in spark plug area is because of bad seals on valve cover and not same problem. I may be the one who's wrong but I believe Keyhole is mistaken, engine running creates a vac in crankcase, you have positive pressure in crank case, cause by ext gases bypassing rings and pushing oil out dipstick, to test Keyhole's idea hook up a pressure gauge to spot in block for oil pressure sending unit. To test my idea pull all spark plugs and do compression test, all four should be around 150psi ( I think). One other thought, you over filled crankcase by 4/5 qts. I actually hope Keyhole is right, it's a lot cheaper fix. good luck
benzover is offline  
post #6 of 15 (permalink) Old 06-20-2012, 07:49 PM
Lifetime Premium Member
 
Date registered: May 2004
Vehicle: 1985 190E2.6(junked), 1995c220, 2000CLK430(totaled), 2001C240, 2009 CLS
Location: beringia
Posts: 421
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Lifetime Premium Member
a easier check is to run engine and put your finger over dipstick tube to see if you feel a positive pressure.
benzover is offline  
post #7 of 15 (permalink) Old 06-21-2012, 05:54 AM
Outstanding Contributor
 
keyhole's Avatar
 
Date registered: Sep 2006
Vehicle: 2004 CLK 240 Coupe
Location: Norfolk. UK
Posts: 10,463
Mentioned: 10 Post(s)
Quoted: 356 Post(s)
Quote:
Originally Posted by benzover View Post
a easier check is to run engine and put your finger over dipstick tube to see if you feel a positive pressure.
That would certainly be a good starting place... I thought that the dipstick had a seal at the top - so it must be quite a positive pressure to force oil up there.

seattle_202:

I've supplied the WIS drawings for a) removing the pan, b) removing the PRV.

Not every task listed is applicable to your W202, but you will see that the 'engine lift' is hardly DIY work, unless you have access to workshop equipment.
Attached Files
File Type: pdf W202 oil pan.pdf (1.18 MB, 108 views)
File Type: pdf W202 oil PRV.pdf (770.1 KB, 109 views)
keyhole is online now  
post #8 of 15 (permalink) Old 06-21-2012, 06:36 AM
Outstanding Contributor
 
keyhole's Avatar
 
Date registered: Sep 2006
Vehicle: 2004 CLK 240 Coupe
Location: Norfolk. UK
Posts: 10,463
Mentioned: 10 Post(s)
Quoted: 356 Post(s)
Quote:
Originally Posted by seattle_202 View Post
also i wondered if any of my exhaust valves were stuck open causing the excessive pressure if thats even possible. i took a feeler gauge and measured in between the cams and the "striker plate" if thats what you call it and got .036 in. i dont know what the specs are but thats what i got +/- .002 in. on both the intake vavle and exhaust valve.
I took a look through my WIS for inlet/exhaust valve gaps for your M111 engine, and there is no information.

There is reference to a device referred to as ' hydraulic valve clearance compensation element' that would seem to fit between the valve stem and the camshaft. Does that make any sense?
keyhole is online now  
post #9 of 15 (permalink) Old 06-22-2012, 05:01 AM
Lifetime Premium Member
 
Date registered: May 2004
Vehicle: 1985 190E2.6(junked), 1995c220, 2000CLK430(totaled), 2001C240, 2009 CLS
Location: beringia
Posts: 421
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Lifetime Premium Member
There is no lash( valve gap) the lobe of the cam replaces the push rod/rocker arm and opens/closes valves That system is old school, in fact the last car to win the indy 500 with a push rod engine was actually( if my memory serves me) was a MB, at what degree of cam rotation are you measuring the .036in. There is a point when the cam does not open or close the valve( depending on TDC of piston for that cyl). Another test , if your not sensitive enough to feel the positive pressure, is to put a pressure gage over dipstick tube, if you don't have one use a small baloon, if it inflates you got a problem, if not it's not blowby, run engine 10/15 minutes with baloon attached and see what happens.
Let us know what you find out, I'm sure we're all interested to learn what the problem is/was.
benzover is offline  
post #10 of 15 (permalink) Old 06-23-2012, 05:07 PM Thread Starter
BenzWorld Junior Member
 
Date registered: Jun 2012
Posts: 6
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Quote:
Originally Posted by benzover View Post
There is no lash( valve gap) the lobe of the cam replaces the push rod/rocker arm and opens/closes valves That system is old school, in fact the last car to win the indy 500 with a push rod engine was actually( if my memory serves me) was a MB, at what degree of cam rotation are you measuring the .036in. There is a point when the cam does not open or close the valve( depending on TDC of piston for that cyl). Another test , if your not sensitive enough to feel the positive pressure, is to put a pressure gage over dipstick tube, if you don't have one use a small baloon, if it inflates you got a problem, if not it's not blowby, run engine 10/15 minutes with baloon attached and see what happens.
Let us know what you find out, I'm sure we're all interested to learn what the problem is/was.
thanks benzover. sorry for the delay reply. stressing about whether to dump the car and sell it for parts or put more money into it and hope that nothing else goes wrong. as of right now its a none running car. i found a very small thin piece of metal on my dip stick as i was taking it out a few days ago. im afraid to know what it is.

no, i havent done the compression test yet. can that be done on a disabled vehicle? or does it need to fire up?

for the degree of cam that i measured was roughly at the base. not where the cam would open the valves open at the wider end. (sorry i dont mean to insult your intelligence, im just trying to describe it as how i understand it)
seattle_202 is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > General Mercedes-Benz Forums > General Mercedes-Benz

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
     
    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode



    Posting Rules  
    You may post new threads
    You may post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are On
    Pingbacks are On
    Refbacks are On

     

    Title goes here

    close
    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome