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  #1  
Old 02-29-2008, 12:32 AM
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my new car: 93 300d 2.5 Turbo - questions...

I just want to say I finally got the car I have been searching for. Its a 93 300D 2.5 Turbo that has done 189,000 miles. She is in good condition and purrs like a kitten. When i went to look at it, it was 13 degrees out, and started on the first attempt, no block heater!

My main concern is a leaky fuel injection pump. It appears that fuel is leaking from one or more of the 5 lines coming out of the top of it. Is this a big issue? When it is idling, you can see fuel drip every few seconds from it. The previous owner said it never used to do it until he got the fuel filters changed. He has run bio-diesel in it. Should I be worried? Any other preventative maintenance I should do? Any good links or DIY sites? Is this injection pump something I can fix myself? Im fairly competant with tools.

Im very excited to be back on the diesel camp (used to have 116 300SD).

Thanks guys.
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  #2  
Old 02-29-2008, 12:58 AM
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delivery valve seals

Sounds like your delivery valve seals need to be replaced. Issue with OM60X engines and the switch to ULSD as I recall. Do a search. You'll need a special socket. I bought one but I think you can rent it here. One of the more gratifying fixes I've accomplished (190D om 601). Study the procedure and be aware of the potential complications beforehand. Plenty of info to be found on the site.

Kevin

1978 300D
1979 240D
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  #3  
Old 02-29-2008, 12:59 AM
92 300D 2.5L OBK #59
 
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Location: Central FL
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Congrats on your purchase.
Change your oil every 5K, There are good DIY on this site. Whats your 0-60 time. If its more than 18 seconds you might have a turbo issue. There is another site that has a section dedicated to W124. Lots of good info to be found.
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  #4  
Old 02-29-2008, 01:05 AM
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Thanks for the info guys! What type of oil should I run in this car, summer/winter?

Can anyone post the links to the W124 diesels? Im very framiliar with the W124, I still have my 400E. This is my first 124 diesel.

I will get the 0-60 time soon.
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  #5  
Old 02-29-2008, 01:08 AM
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I had an '86 300sdl that had leaky injection pump delivery seals. The leak kept getting worse. At highway speeds the leak increased in volume reached the exhaust, lost the whole car in minutes in a blazing fireball alongside the highway. I found out later it's apparently an easy job.







'87 560SL 150,000
'94 SL500 40,000
'91 350SDL 514,000
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'94 SL5000 60,000
'91 350SDL 545,000
'91 350SD 197,000
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  #6  
Old 02-29-2008, 07:03 AM
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Sounds like delivery valve seals to me too. Pretty easy fix.
Congratulations on what I consider one of the best cars MB made available once the wiring harness has been upgraded.
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  #7  
Old 02-29-2008, 02:42 PM
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I'm curious to learn more about this. On the 60x engines, the entire fuel system is on the opposite side of the engine from the exhaust, did the return line pop off and soak the hood insulation? Or am I incorrectly thinking this was a 603 car?


Quote:
Originally Posted by jcciem View Post
I had an '86 300sdl that had leaky injection pump delivery seals. The leak kept getting worse. At highway speeds the leak increased in volume reached the exhaust, lost the whole car in minutes in a blazing fireball alongside the highway. I found out later it's apparently an easy job.







'87 560SL 150,000
'94 SL500 40,000
'91 350SDL 514,000
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  #8  
Old 02-29-2008, 03:23 PM
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Quote:
Originally Posted by amg280 View Post
Thanks for the info guys! What type of oil should I run in this car, summer/winter?

Can anyone post the links to the W124 diesels? Im very framiliar with the W124, I still have my 400E. This is my first 124 diesel.

I will get the 0-60 time soon.
Mine likes the Mobil1 diesel 5w-40 that I put in it this summer. Since I've been away at school, I only have about 4,000 miles on that oil change so far. I'm going to take it to probably 7k and do an oil analysis. Previously it ran 15w-40 dino. Since running M1, all but one of my ticky lifters have stopped. I think next change will be Rotella T since it's cheaper, unless I can find jugs of Delvac 1 for cheap.
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http://i52.photobucket.com/albums/g1...MG_2277sig.jpg

1990 300D 2.5 Turbo -155k
2000 E430 - 103k
2014 Jeep Grand Cherokee Ecodiesel 4x4 - 11k
2014 VW Passat TDI SE - 7k Bro's Diesel
2006 E320 CDI - 128k Pop's Benz


Pre-glow - A moment of silence in honor of Rudolph Diesel
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  #9  
Old 02-29-2008, 03:52 PM
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I swap at 7,500 miles with 5w-40 syn.
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  #10  
Old 02-29-2008, 05:17 PM
compress ignite's Avatar
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Wealth of Information

Look at member GSXR posts and DIYs

(use "Advanced" Search and plug his name in as author)
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  #11  
Old 02-29-2008, 05:20 PM
compress ignite's Avatar
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Wiring Harness

ENGATWORK,

No, don't tell me the 124128(s) were subject to the self degrading wire insulation!

What years?

Thannks!
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  #12  
Old 02-29-2008, 05:32 PM
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Pleased to see another W124.128 owner - bought one a couple of months ago. Also using Rotella as my annual mileage fairly low.l

------------
91 300D 2.5 turbo
86 190D 2.5
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  #13  
Old 02-29-2008, 11:32 PM
92 300D 2.5L OBK #59
 
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Location: Central FL
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Rotella 15W40 here.
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  #14  
Old 03-01-2008, 12:50 AM
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602 648 113 A630
 
Join Date: Feb 2006
Location: Tacoma, WA
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Quote:
Originally Posted by compress ignite View Post
ENGATWORK,

No, don't tell me the 124128(s) were subject to the self degrading wire insulation!

What years?

Thannks!
I'm not sure which one it has. Don't think it's the bad one, since I have never heard of one going bad on one of these cars. All the electrics work fine on my car...well minus the cruise, but I'm working on that
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Dale

http://i52.photobucket.com/albums/g1...MG_2277sig.jpg

1990 300D 2.5 Turbo -155k
2000 E430 - 103k
2014 Jeep Grand Cherokee Ecodiesel 4x4 - 11k
2014 VW Passat TDI SE - 7k Bro's Diesel
2006 E320 CDI - 128k Pop's Benz


Pre-glow - A moment of silence in honor of Rudolph Diesel
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  #15  
Old 03-01-2008, 01:24 PM
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OM606.962 177hp 330nm
 
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DIY delivery valve seals

http://www.peachparts.com/Wikka/OM602InjPumpFuelLeak
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How to eliminate oil dependency through market-driven approaches.
“We could cut oil use in half by 2025, and by 2040, oil use could be zero,”

The Sound of Diesel Speed
Ode to MB
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