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  #1  
Old 12-21-2008, 05:24 PM
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Location: Round Rock, Texas
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83 300SD - It had to be saved - Am I doing this right?

Ok guys 1st post !

I recently came to own a 83 300SD - it was REALLY cheap!

Previous PO was running unfiltered WVO and killed injection pump.

Local guy here bought it back from him and tried to get it running - never could get fuel through the pump - he cleaned out everything. He sold it to me because he had too many MB projects going on and didnt want to mess with this one. I got the car for 350 and he towed it to me. Car is in fair shape - needs paint and some TLC but otherwise PO said everything did work before IP got murdered. Seat motors are bad - its not the switch.

So thats the background of this vehicle. For the past two weeks I've searched and read every post I could find relative to this car and the work its needs to get running agian. Im a fair mechanic but I need a few of you to look over my shoulder so to speak and say thats good or thats bad. I hate paying someone to to do something I could have done myself.

What I've done so far:

1. Tried just about everything to get old IP to work. No go!!

2. Removed old IP - purchased another one from PO who works on MB's - actually I dont pay unless it works - he's a good guy!

3. Put on new IP - bleed, pump and cranked. It started twice and died. Really stinky exhaust ! Currently recharging battery with a crappy 6amp charger.

4. Bonehead move # 1 - I just removed old IP and installed new one "with splined shaft at roughly the same position as the first IP"


So my questions/concerns are:

1. Could bonehead move # 1 be why Im unable to get this baby running?
2. What is meant by having the IP installed "180 degrees off"


Thanks guys! I wanna post pics as soon as I find my extra battery and charger!

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  #2  
Old 12-21-2008, 05:37 PM
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yeah i'd say your out of time... roughly the same spot is not going to work unless your lucky.. appears your werent
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  #3  
Old 12-21-2008, 06:09 PM
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It started twice, don't assume timing yet

Quote:
Originally Posted by tdelaurier View Post
Previous PO was running unfiltered WVO and killed injection pump.
Were you fueling the "new" IP straight WVO? I know buttkiss about running straight WVO, but I would think you should try a 2 liter bottle full of commercial pump diesel with the pickup and return fuel lines in it. Or you may want to try Diesel Purge instead of diesel. My point is that, if you had it running twice, the timing is good enough for that. IT may not be perfect, but good enough. I would worry about the fuel. From what I've seen and read, WVO needs to be heated or otherwise "treated", and that could be the problem. YOu have nothing to lose -- I would do it before I started tearing things apart.
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1990 350SDL (It's a work in progress) 250K mi
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  #4  
Old 12-21-2008, 06:14 PM
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No WVO for me - I put 5 gallons of new diesel and some diesel clean in the tank and pump before trying to get the old IP working and now the new IP working. Im just having to crank and crank - I've recharged the battery twice now.
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  #5  
Old 12-21-2008, 06:27 PM
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I'm hoping that the OP has flushed all the lines out, and is trying to start it on pump diesel. How long was it running when it did start?
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  #6  
Old 12-21-2008, 06:33 PM
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Lines are all clean as well as tank - it ran for about 5 seconds.
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  #7  
Old 12-21-2008, 06:40 PM
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Could simply be air in the lines. Crack an injector line, see if you get bubbles.
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  #8  
Old 12-21-2008, 06:45 PM
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Did you set the IP timing?

Follow this if you didn't. http://www.peachparts.com/Wikka/OM615OM616InjPumpTiming



Also, unheated and unfiltered WVO will cause some havoc with piston rings. You might have some stuck rings and low compression. If that is the case, you might want to soak the rings with Marvel mystery oil for a few days. Or if your in a hurry to get it started and soak it later, you can put a 50/50% mixture of regular engine oil and STP oil treatment down through the injector holes. Crank it to squirt out the extra through the injector holes (you don't want to hydrolock it). This would give you an extra seal in the rings. Reinstall and try to start it. (but after you did the timing if you hadn't done it yet)
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  #9  
Old 12-21-2008, 06:59 PM
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I have read about that method of timing - Im having a hard time finding a used hardline locally - without having to drive all over the place. Does the bend and length matter ?

I also read about the bubble method and the welling method - both require some help though. Actually I've been using the nut on the power steering pump to turn the engine over - its worked well so far.

Im gonna try the marvel mystery oil tonight - its too cold in the garage to work right now anyhow - we native Texans cant take 28 degree weather.
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  #10  
Old 12-21-2008, 07:19 PM
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  #11  
Old 12-21-2008, 07:30 PM
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Seems like an advertisement rather than help!
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  #12  
Old 12-21-2008, 07:53 PM
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First of all 28 degrees is a little hard to be doing what you are. You do have a block heater plugged in and have checked the glow circuit? Is the primer pump leaking fuel? Is there only one solid bubble in the pre filter? or a stream of them when you crank.

If truly unfiltered vegatable oil you might want to pull ther injectors and have them at least spray tested. Some may be impaired or obstructed. Not too expensive to do.

When the injectors are out being tested do a compression check or even before sending them out. Compression may still be okay across the engine. Yet I would want to know before spending any money and time. Also a person that burnt unfiltered or treated vegatable oil would never think to check the valve clearances so you should do that as well.

You are not forced to reset them unless the need is apparent when you check them. Since it ran for five seconds there is a chance at least some of your cylinders if not all have reasonable compression.
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  #13  
Old 12-21-2008, 09:32 PM
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dumb question, did you change the filters?
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  #14  
Old 12-22-2008, 03:09 PM
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Quote:
Originally Posted by spamman450 View Post
dumb question, did you change the filters?

You bet I did!! This aint my first rodeo - just my first diesel!
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2003 Jetta TDi
1983 300SD
1999 Ford Contour - died - Oil pump
1998 Chevy Blazer - money pit
1997 Toyota Corolla - wrecked
1983 Honda Civic - still on the road
1980 Datsun 310 - long dead
1976 Ford Granada - my 1st car - best A/C ever


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  #15  
Old 12-26-2008, 02:42 PM
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Its starts!!

Finally got it started ! hurrah! Short lived though - I think I burned up the starter or at least the solenoid! I could hear the started turning - but it wouldnt turn off with the key! Had to remove the battery cable.


I took out the starter - gonna test it with some jumper cables. That top starter bolt is a BEAR!! Had to heat up the end to get it loose!

Ill let ya know the outcome of the starter test!

Thanks for your input soooo far.

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2003 Jetta TDi
1983 300SD
1999 Ford Contour - died - Oil pump
1998 Chevy Blazer - money pit
1997 Toyota Corolla - wrecked
1983 Honda Civic - still on the road
1980 Datsun 310 - long dead
1976 Ford Granada - my 1st car - best A/C ever


"Listen, strange women lyin' in ponds distributin' swords is no basis for a system of government. Supreme executive power derives from a mandate from the masses, not from some farcical aquatic ceremony."
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