When I opened my hood after driving today, water was shooting out of my radiator. There seems to be a small pin hole on the black part of the radiator where the top hose connects to the radiator on the drivers side of the radiator.

Can this be fixed? Is that black part metal or some sort of plastic? Or do I have I have to buy a new one? Are they hard to replace?

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1990 Mercedes 300 SEL (320,000 miles)
1994 Mercedes E420 (140,000 miles)

1984 300d Turbo 144,000
New Rebuilt Engine And Trans
Replace The Radiator, Diy 2 Hrs And Upper And Lower Water Hose

Most likely the plastic 90 degress elbow. Will post a URL that hopefully will bring up pic. Part available from this sites BuyParts.

http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=25M0TU21925M0TU7PO&year=1990&make=MB&model=300-SEL-006&category=G&part=Radiator+Fitting

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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

Thanks Mike.

So the elbow just snaps in and out? Easy to replace?

I am looking at the elbow now and it does not seem obvious.

__________________
1990 Mercedes 300 SEL (320,000 miles)
1994 Mercedes E420 (140,000 miles)

By the way, in the attached picture, the pin hole is where the arrow is. Is that the 90 degree elbow?

Just quickly, I loosened up the hose and brought it over the pin hole as much as I could but it still leaks a little bit, especially when the water temp gets above 100F with the a/c on at idle.

Attached Thumbnails

 

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1990 Mercedes 300 SEL (320,000 miles)
1994 Mercedes E420 (140,000 miles)

The elbow is in that vicinity.

I have never replaced the part. It's been talked about a hundred times here. I suspect someone will chime in with installation instructions.

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

Well, I learned something new today. I thought all coolant was green, too. This place is the best!

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" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles

Mercedes Benz and BMW along with other manufacturers all require Zerex G05 as their coolant. I have found it at NAPA. If they do not have it in stock they will get it for you. If you are running the green stuff, do a search of the site for "citric acid flush" you will need to flush the system with water, degrease it, then flush with citric acid in order to get all the green stuff out.

__________________
"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy"

Current
Monika '74 450 SL
BrownHilda '79 280SL
FoxyCleopatra '99 Chevy Suburban
Scarlett 2014 Jeep Cherokee
Krystal 2004 Volvo S60
Gone
'74 Jeep CJ5
'97 Jeep ZJ Laredo
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'92 Subaru
'96 Impala SS
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad

I think a lot of cars other than MB's and BMW's have plastic in their cooling systems. I would think the non-corossive stuff would be more readily available if the green is that hard on plastic.

__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles