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Old Apr 9, 2012 | 02:07 PM
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From: In God's Arms
1983 300D-turbo "Bonnie"
Overheating OM617

Okay guys, on a 30 mile trip, the temp goes to red. We turned the heater on, and opened the sunroof. It was 40 degrees out. When I got home, I found that I had lost an entire overflow bin of coolant! I have no know leaks, and my grandfather said it sounds like it is burning it. Any ideas?? I almost want to cry. After all I have put into it, and the possibility of something wrong with the motor??!!?
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Old Apr 11, 2012 | 03:06 AM
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From: In God's Arms
1983 300D-turbo "Bonnie"
Nobody have anything to add/suggest??
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Old Apr 11, 2012 | 11:27 AM
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W210 W140
Not a lot of dieselheads on here.

What have you done to the cooling system/engine lately? Sounds like your headgasket might have failed. What color is the smoke coming out the tailpipe? Black or white?
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Old Apr 11, 2012 | 11:28 AM
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W210 W140
Also. Check out www.peachparts.com. Lots of Merc diesel guys on there.
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Old Apr 11, 2012 | 12:08 PM
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From: In God's Arms
1983 300D-turbo "Bonnie"
Originally Posted by EdzBenz
Not a lot of dieselheads on here.

What have you done to the cooling system/engine lately? Sounds like your headgasket might have failed. What color is the smoke coming out the tailpipe? Black or white?
I have done nothing to the coolant system, but replace the fan guard. I only get a tiny little bit of blue smoke until the car is warmed up, then no smoke at all.
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Old Apr 11, 2012 | 12:10 PM
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From: In God's Arms
1983 300D-turbo "Bonnie"
Originally Posted by EdzBenz
Also. Check out www.peachparts.com. Lots of Merc diesel guys on there.
Yeah, I was there, but they banned me partly because of my faith, and because when my little brother joined, they thought I had made another account. The people there are jerks, from my experience. I mean, there are a coupe nice ones, who are Christians. But the others, cuss at you, tease you, pick on you, and call you dirty words when you get banned.
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Old Apr 11, 2012 | 01:05 PM
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'05 C200K SS, '05 Kleemann CLK500K, '08 Hummer H3 & '92 Z34 5sp (track car in Canada)
Originally Posted by Thirdrem
Yeah, I was there, but they banned me partly because of my faith, and because when my little brother joined, they thought I had made another account. The people there are jerks, from my experience. I mean, there are a coupe nice ones, who are Christians. But the others, cuss at you, tease you, pick on you, and call you dirty words when you get banned.
More motivation to get into that CLK sooner and hang out with us on the 209 forum pal

Good luck with the 300 in the meantime.
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Old Apr 11, 2012 | 01:32 PM
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From: In God's Arms
1983 300D-turbo "Bonnie"
Originally Posted by Kevwood
More motivation to get into that CLK sooner and hang out with us on the 209 forum pal

Good luck with the 300 in the meantime.
Yeah, I think I will be getting a CLK. Cheaper to repair, still looks nice, and less expensive than the CL. Thanks!!
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Old Apr 17, 2012 | 11:35 AM
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I had this happen on mine a few years back and it was a coolant leak that only exposed itself when under pressure. I was able to see the actual leak though since it left a stain and was on the radiator overflow hose of all places.

I'd start with simple things though like verify the water pump is working. Make sure the t-stat is not stuck.
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Old Apr 25, 2012 | 11:54 AM
  #10  
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From: In God's Arms
1983 300D-turbo "Bonnie"
UPDATE

Okay, coolant system would not even make pressure. Just poured coolant into the cylinder(s). Have removed the valve cover, and are going to adjust valves before we retry compression test. Valves are all WAY to tight and compression was VERY low. I'll keep you guys updated!
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Old May 16, 2012 | 08:16 AM
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1985 300DT
If you know the HG is blown, why bother wasting your time doing anything else?
You will have to adjust the valves again when you do the gasket.
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