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#1
11-25-2007, 02:21 PM
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300D Radiator Leak
Hello All,
I just got back from a short drive here in town. I got out and popped the hood because I saw some smoke coming up. The radiator cap was leaking some liquid?? Does anyone know what that is telling me?
__________________
http://www.libertyagrifuels.com 1984 300D Turbo 1980 300SD Sold 1983 300TD Sold Dagger 16 ft. Legend Canoe (for the weekends) Marin Northside Trail Mtn. Bike 
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#2
11-25-2007, 02:23 PM
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At a minimum it's telling you that it's leaking fluid. Was the cap on tight? Was the engine overheating? Are you talking about the cap on the expansion tank?
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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#3
11-25-2007, 02:41 PM
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The have not ever seen the temp high on the gauge. I will check closely next time I'm in it. It was the cap on the radiator. I will make sure it is on there tight once it cools down.
__________________
http://www.libertyagrifuels.com 1984 300D Turbo 1980 300SD Sold 1983 300TD Sold Dagger 16 ft. Legend Canoe (for the weekends) Marin Northside Trail Mtn. Bike
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#4
11-25-2007, 02:50 PM
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Can you clarify what car you are referring to? I took it to be the 84 300d but I thought they did not have a cap on the radiator, only on the expansion tank.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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#5
11-25-2007, 03:04 PM
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Yeah it is the 300 D 1984. I am referring to the silver and red spin on cap on top of the radiator. I am trying to figure out how to get a pic to attach so that I can be elaborate. Do you know how I can get my pictures from my camera to be under the 73 KB cut off???
__________________
http://www.libertyagrifuels.com 1984 300D Turbo 1980 300SD Sold 1983 300TD Sold Dagger 16 ft. Legend Canoe (for the weekends) Marin Northside Trail Mtn. Bike
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#6
11-25-2007, 04:48 PM
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I was able to edit a pic using the the standard software in my pictures. Pull up pic, right click> edit> you'll see a dotted line box> click and drag, right click again hit clear selection, continue. I also enlarged the edit shot. When done, I sent to my docs. I'm sure after-market software is easier.
The radiator, I'm surprised you have a cap on it. Hopefully, that was steam, after it has cooled down, check fluid level. Do you have an expansion tank?
__________________
83 SD 84 CD
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#7
11-25-2007, 06:02 PM
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My guess is your radiator cap is bad. Have you pressure tested the cap? The caps arent just for keeping coolent in the expansion tank/radiator they also raise the boiling point and keep pressure in the cooling system.
So my guess would be that you have a bad cap and the wrong cap. You say silver and red which is probably the aftermarket crap they sell at your local parts place. Get the correct cap and pressure check your cooling system at 1.2 bar. http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=2800UIN0N28I12MLW7&year=1984&make=MB&model=300-DT-001&category=All&part=Expansion+Tank+Cap
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Current: 05 E320 CDI 07 GL320 CDI 08 Sprinter 05 Dodge Cummins 01 Dodge Cummins Previous 2004 E55 AMG 2002 C32 AMG (#2) 1995 E300 1978 300D 1987 300D 2002 C32 AMG(blown motor :[ 1981 300SD 1983 300SD 1987 300SDL 2002 Jetta TDI 1996 S420 1995 S500 1993 190E 2.6 1992 190E 2.3 1985 190E 2.3 5-Speed
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