Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-02-2019, 04:38 PM
Registered User
 
Join Date: Mar 2019
Posts: 2
W124 e320 Headgasket and Weird Cooling Issues

Hello, I have a 1995 e320 wagon with 150k mi on it. I have been having some strange cooling issues with it. I recently replaced the head gasket myself after having the infamous oil leak issue associated with the M104 engine. Additional symptoms before the replacement were a slight oil slick in the coolant tank, and occasionally smoke when accelerating to highway speeds (but never at idle or once fully warm ). After HG replacement, the smoke disappeared, as well as the oil leak. But unfortunately, the oil slick in the coolant tank increased after the replacement. I am kicking myself for not having done a coolant flush to clear out any residual oil from the HG replacement, so Iím not sure if itís from that or from a new internal leak (but it does not seem to be increasing as I drive the car more). No milkshake in the oil dipstick, and the car does not overheat during normal driving. The exception is when I exit the highway and come to a complete stop, the temp gauge increases from 84c to 100c. Finally, it appears the car is not building coolant pressure. When I remove the coolant tank cap with the car warm I never get a pressure release...

Thermostat is new, the rest of the cooling system is unknown.

This car is a bit of a ďwinter beaterĒ for me here in Michigan, so I donít want to dump more time and money into it without a more informed diagnosis. Obviously there are some serious issues with the cooling system still but Iím not quite sure where to start. My thought is to get a proper coolant flush first and then pressure test the system to try and identify where it might be leaking. If oil shows up again after the flush then I obviously messed up the head gasket job, right? Or is there another way oil can get into the coolant that I should consider? Iím trying to do as much DIY but I also will take it to a shop for diagnosis if needed...

Thoughts?
Reply With Quote
  #2  
Old 03-03-2019, 08:04 AM
Hirnbeiss's Avatar
ich fahre, also bin ich
 
Join Date: Mar 2002
Location: South Florida
Posts: 1,643
I would go with your plan. Engine heat up after slowing down is normal, with teh fans kicking in at 100C or so.

The only other source of oil would be from the oil cooler at the filter housing:
M104 Engine Oil Cooler retrofit (E320/C36, etc.)
__________________
Prost!
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 09:26 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page