New Member - '73 280 114 Rapid Overheating Issue - Mercedes-Benz Forum

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 27 (permalink) Old 08-02-2011, 11:19 AM Thread Starter
BenzWorld Junior Member
 
Date registered: Aug 2011
Vehicle: 1973 280 w144 m110
Location: Wheeling, WV/Pittsburgh, PA
Posts: 19
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
New Member - '73 280 114 Rapid Overheating Issue

Hello Everyone,

Three weeks ago I purchased a 1973 280 w114. I wanted a project car that I could turn into a nice local pleasure driver. I lurked here before purchasing and I want to say thanks to everyone who has posted info about these cars. I was able to negotiate price based on things I learned here.

When I purchased it, it ran and drove with only a few minor hiccups. I think its the original Solex carb that is giving me some headaches (rough idle, sketchy acceleration) but before I tackled that (or, I should say, before I find a mechanic to tackle it) I wanted to do as much as I could with the car first.

So far I have: Replaced the muffler and rear half of the exhaust, replaced all the fuses, drained the gas tank and filled with fresh premium fuel and a little Seafoam, new tires, new brake pads, replaced some bulbs, fixed a seatbelt, replaced a broken window motor, and some other minor cosmetic things.

So far, so good other than the pre-existing carb related issues.

Here comes my problem. On Monday I changed the oil. I used Castrol 20w-50 and the Purolator Classic filter that matches my car. The oil change seemed to go fine, that is, until I took it for a short drive and the car quickly overheated. The temp gauge shot up to redline and the radiator was boiling over. I let it cool and checked the oil level and the engine was almost two quarts over!

I drained the pan and saw that the oil was really dirty. During the first oil change, I had the car up on ramps and I wonder if all of the old oil didn't drain properly. Could that much oil have been resting in the low ends of the engine or pan?

The second time around I left the car parked flat to drain the pan. As the oil drained, it got progressively lighter as if the new oil had barely mixed with the old dirty stuff that didn't drain the first time.

I put fresh oil back in to the proper level and topped of the radiator with coolant. Cleaned everything up and took it for a ride.

Same thing happened. Within 10 minutes the car overheated and the coolant was boiling.

I can't help but think I did something wrong during the oil change as I have yet to have a problem with overheating.

Strange thing is, when I first got the car it was smoking a bit on start-up and after takeoff from a short idle (like at a stop light). I'm not getting any smoke now. But I would rather have a little puff of smoke than a rapid overheating issue. The engine sounds great (respectively) and I don't want to do any damage.

Any advice, experience or troubleshooting tips will be greatly appreciated.
Jonny D is offline  
Sponsored Links
Advertisement
 
post #2 of 27 (permalink) Old 08-02-2011, 12:37 PM
BenzWorld Member
 
Goodchild's Avatar
 
Date registered: Feb 2008
Vehicle: 1994 S500 LWB, 1970 220D, 1994 E320, 1992 JAGUAR XJ6
Location: FARGO,ND
Posts: 116
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Check your thermostat my friend. I know it seems like the oil change may have caused it to overheat but I am highly skeptical (please detail what you did during the oil change, blow by blow) Replace the thermostat if it looks rusty but trusty in there. However before you install a new thermostat, take your radiator out. Wrap it in some nice thick towels or cardboard with duck tape and loan it to you local radiator service shop to be hot-tanked and cleaned. Shouldn't cost you much. I experienced sudden overheating on my 70 220 D during the winter (yes if your thermostat is bad, your car can overheat in our North Dacolder winter) Changed the thermostat and it never overheated again.

Let us know what you find. chances are your radiator has never been removed since it was put in at the factory

Unkl Benz
Mercedes Benz n BMW specialist
Fargo ND
Goodchild is offline  
post #3 of 27 (permalink) Old 08-02-2011, 12:55 PM Thread Starter
BenzWorld Junior Member
 
Date registered: Aug 2011
Vehicle: 1973 280 w144 m110
Location: Wheeling, WV/Pittsburgh, PA
Posts: 19
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Thanks for the reply. I'll add the radiator service to my list.

My steps for changing the oil:

- Brought the car up on front wheel ramps
- Took the oil cap off of the engine
- Removed the metal oil filter housing and oil filter
- Cleaned the sediment from inside the oil filter housing and reassembled the housing
- Removed the oil pan drain plug and let it drain
- Replaced the oil filter including the new rubber gasket
- Replaced the drain plug copper crush washer and put the plug back in
- Added new oil to the engine

Did I miss something?
Jonny D is offline  
post #4 of 27 (permalink) Old 08-02-2011, 10:22 PM
BenzWorld Member
 
Goodchild's Avatar
 
Date registered: Feb 2008
Vehicle: 1994 S500 LWB, 1970 220D, 1994 E320, 1992 JAGUAR XJ6
Location: FARGO,ND
Posts: 116
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
From what you wrote, you seem to have done everything right. Change thermostat and drain radiator and have it cleaned then put it back. The problem is not with your lubrication system , you thermostat might just have gotten stuck in the closed position.
Goodchild is offline  
post #5 of 27 (permalink) Old 08-03-2011, 07:55 AM Thread Starter
BenzWorld Junior Member
 
Date registered: Aug 2011
Vehicle: 1973 280 w144 m110
Location: Wheeling, WV/Pittsburgh, PA
Posts: 19
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Thanks. I'll pop the thermostat out tonight.

Any idea why the new oil appeared to not mix with the old oil during the first oil change?
Jonny D is offline  
post #6 of 27 (permalink) Old 08-03-2011, 08:13 PM
BenzWorld Member
 
Goodchild's Avatar
 
Date registered: Feb 2008
Vehicle: 1994 S500 LWB, 1970 220D, 1994 E320, 1992 JAGUAR XJ6
Location: FARGO,ND
Posts: 116
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Density difference I suspect. The old oil should be denser than the new...
Goodchild is offline  
post #7 of 27 (permalink) Old 08-03-2011, 09:29 PM
Lifetime Premium Member
 
Date registered: Sep 2008
Vehicle: 1975 450SL
Location: Phoenix
Posts: 2,432
Mentioned: 2 Post(s)
Quoted: 15 Post(s)
Lifetime Premium Member
If the engine started and ran for any time at all, the oil pump and circulation system should have mixed everything. That it didn't mix is worrisome. I seem to remember someone saying something about it being necessary to get the oil filter cartidge in correctly.

If a spring was in wrong, or something upside down, the oil flow path could have gotten messed up. If it was sitting and not startd for a while, something could have blocked a passage, possibly.

Just an off-the-wall idea to possibly check out.

Remember: It's not just a car. It's an Adventure.
RadioTek is offline  
post #8 of 27 (permalink) Old 08-04-2011, 07:35 AM
BenzWorld Elite
 
flyboyike's Avatar
 
Date registered: May 2003
Vehicle: 2012 Focus SE
Location: Ormond Beach, FL
Posts: 7,699
Mentioned: 1 Post(s)
Quoted: 68 Post(s)
Out of curiosity, what was the oil pressure gauge indicating during all this?

Felicita e un bicchiere di vino con un panino.
flyboyike is offline  
post #9 of 27 (permalink) Old 08-04-2011, 08:39 AM
BenzWorld Veteran
 
Date registered: Nov 2008
Vehicle: 1981 300TD 310k--1966 230 165k--1970 280se 172k
Location: Ohio City, Ohio
Posts: 624
Mentioned: 1 Post(s)
Quoted: 33 Post(s)
Are you sure that the lighter oil during the oil change is not coolant? Any milkshake on the dipstick or valve cover vent?

1981 300TD--310k miles
1970 280sel--172k miles
1966 230--162k miles
carpenterman is offline  
post #10 of 27 (permalink) Old 08-04-2011, 11:32 AM Thread Starter
BenzWorld Junior Member
 
Date registered: Aug 2011
Vehicle: 1973 280 w144 m110
Location: Wheeling, WV/Pittsburgh, PA
Posts: 19
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Thanks for the replies and ideas.

I'll double check the oil filter, just to be sure.

The oil pressure gauge was showing good pressure on start-up and while driving, as it always has. That being said, the car has always had a sketchy idle and I noticed that during this event, the gauge was bouncing low during idle. When I would accelerate, it would climb back up. Any thoughts?

No, there is no coolant in the oil or oil in the coolant. Thankfully. Both fluids are clean. That would mean a head gasket issue, right?

Last night I tinkered around a bit. Man, that thermostat is hard to access. I'll need a big break in my schedule to clear room to work on it. I wanted to make sure that the problem wasn't with the radiator so I checked the hoses and burped the system. Everything was fine but I did notice a piece of crystalized junk float to the top of the coolant tank. I fished it out but I assume there is more where that came from. All the more reason to follow Goodchild's advice and get that tank cleaned!
Jonny D is offline  
Sponsored Links
Advertisement
 
Reply

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



    Similar Threads
    Topic Author Forum Replies Last Post
    300SE Overheating issue? HELP!! drwexploring General Mercedes-Benz 12 12-20-2010 08:54 AM
    Overheating Issue yoffer W210 E-Class 4 06-24-2010 04:34 PM
    overheating issue. jbrunner27 W126 S,SE,SEC,SEL,SD,SDL Class 2 09-16-2007 03:00 AM
    Overheating Issue satyr W201 190-Class 6 05-18-2005 02:03 PM
    Electric Fan/ overheating issue? Vince_Barletta W124 E,CE,D,TD Class 12 06-18-2003 09:58 PM

    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