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Old 02-04-2009, 03:51 PM
winmutt's Avatar
85 300D 4spd+tow+h4
 
Join Date: Apr 2006
Location: Atl Gawga
Posts: 9,346
OM314 starting

Anyoen familiar with these? I have one in my L508D based RV conversion. As many of you know I made a road trip to try to get it started without complete success. I was able to get it running on ether only. No fuel seemed to be making it to the injectors. I did not fully prime the system apparently. I did use the hand pump feverishly but did not crack the injector lines or "large 19mm bolt".

Of course when someone mentioned this I spend a good half hour hitting my head on the desk.

I am looking for other suggestions as well. I plan on replacing the hand pump next time as it leaked like a sieve.

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1995 E420 Schwarz
1995 E300 Weiss
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Old 02-24-2009, 10:40 AM
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Join Date: Aug 2006
Location: Tarn, SW France
Posts: 67
Hi Winmutt,
I just happened on this thread.
I've got an OM314-powered truck. If you're not getting fuel (are you sure, does the pump go hard?) I'd earnestly recommend that you take the (small) extra time to check out the system from tank-to-tank. Have you checked out the 2 prefilters? There's one fitted inside the tank at the bottom of the main fuel feed line - these are famous for clogging up with age, you may need to drain the tank and remove it from beneath. There's another one directly underneath the IP; it's a glass vessel that you screw on and off, like you'd see on an old-fashioned tractor. Depending on your body style, this filter can be very hard to spot, but it is there! Then of course there's the main filter itself...
You should definitely plan on blowing out these lines with compressed air. Assuming the hand pump does work, and that your batteries (24V starter on your truck?) are healthy, you should be able to get it going once you've cracked the line running from the filter to the pump and you can see diesel flowing. There is also a convenient bleed screw on the pump body - you really don't need to crack any injectors.
You've probably figured all this out by yourself anyway. On my truck I've replaced the fuel filter with one from a scrap car that has a built-in primer pump. It's easier than messing about with the annoying OEM model.
HTH
Giles
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Old 02-24-2009, 10:46 AM
winmutt's Avatar
85 300D 4spd+tow+h4
 
Join Date: Apr 2006
Location: Atl Gawga
Posts: 9,346
Traditional bleed screw?

Could you do me a huge favor and take some pics of this glass filter and the bleed screw?

I bypassed the tank issues witha 5gal jug of fresh diesel.
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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42
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  #4  
Old 02-24-2009, 11:03 AM
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Join Date: Aug 2006
Location: Tarn, SW France
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Rolf,
I can't snap the glass bowl - it really is that hard to spot! It is directly beneath the hand pump on the side of the IP - follow the lines from the tank!
The pump bleed screw (depending on the exact IP model) will be a screw/locknut combo on the IP body in the vicinity of the hard line runninng to #1 cylinder.
I'm not clever enough to attach an image but I'll mail you one
Giles

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