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  #31  
Old 06-09-2016, 09:04 AM
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Join Date: Jun 2016
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Oh dear! check my signature

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  #32  
Old 06-09-2016, 11:05 AM
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Join Date: Oct 2012
Posts: 5,924
Quote:
Originally Posted by cho View Post
.

If the Dv's are crud-ed or plagued with some residues, service can be done,but
if those are worn I'm strong believer that service can not be done successfully due to shape and design of the DV's surface.

Attempt to do so by other members I spoke (on STD) failed miserably.
Delivery valve holders on the other hand can be easily done or even fabricated
cheaply.

cheers

ChO

.
Too bad but if it is the way people have found the situation. It is the way it is. I only remembered some mentions over the years on people dealing with them but not the specifics of how over the years. Nor any success or failure rates.

A chance taken on a used delivery valve as a replacement for a suspected bad one is reasonable in my mind. If they are quite expensive new.
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  #33  
Old 06-10-2016, 06:19 PM
multi string slinger
 
Join Date: Jan 2014
Location: Los Angeles, CA United States
Posts: 113
Found a local source for DVs'. $60 each.

So I dont know if I m ready to drop that much money on something that might not be the real problem.

FWIW, it was cloudy and slightly cool this morning and it idled really nice! But I am sure by the time I get home in a few hours, it will rattle my eyes out of their sockets.

My source for the DVs is a diesel specialist who also suggested that it could be the injector nozzles I got. Mine are supposedly preferred by "turbo" folks and push more fuel etc. That could be why I have a lopey idle.

In any case, I purchased all new lines and am waiting to visit said diesel specialist to have my pump bench tested. Once thats done, I will replace all the lines and filters. Will update this thread as I do these things.
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  #34  
Old 06-11-2016, 10:49 PM
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Join Date: Jun 2006
Location: Southeast
Posts: 1,848
Have you cleaned your fuel tank and strainer?

It could be so clogged, it's preventing the car from getting fuel.
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  #35  
Old 06-12-2016, 08:35 PM
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Join Date: Oct 2012
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Quote:
Originally Posted by guyonabuffalo View Post
Found a local source for DVs'. $60 each.

So I dont know if I m ready to drop that much money on something that might not be the real problem.

FWIW, it was cloudy and slightly cool this morning and it idled really nice! But I am sure by the time I get home in a few hours, it will rattle my eyes out of their sockets.

My source for the DVs is a diesel specialist who also suggested that it could be the injector nozzles I got. Mine are supposedly preferred by "turbo" folks and push more fuel etc. That could be why I have a lopey idle.

In any case, I purchased all new lines and am waiting to visit said diesel specialist to have my pump bench tested. Once thats done, I will replace all the lines and filters. Will update this thread as I do these things.
You are probably going to drop a lot more money by going to the diesel specialist. If you and the problem before having the injectors rebuilt and it is still there.

Very little chance it is the injectors. Plus your description of the problem indicates it is not the injectors anyways. You have pretty much proved the problem is with the number three element or delivery valve that you read a much lower temperature on that cylinders glow plug. After the injection pump got hot.

At least get an estimate of the least and highest this expert might charge overall. If it is more than you want or are prepared to spend. You can still swap the number three delivery valve with any other in that engine and see if the problem remains on that cylinder or moves. If it does not move a reasonable gamble is a cheap used injection pump. Again the used natural aspired injection pumps are nowhere in the heavy demand compared to the engines with turbos.

If you did not have a clue about what is wrong would be something. Instead you have a solid clue where all your glow plugs except the number three are sitting at 190 F degrees and the number three at about 150 F degrees. The 150 is probably the water temperature in that area with no cylinder heat added to the glow plug from a running cylinder. You can absolutely prove this with milli volts or a loosening of that fuel line at the injector when the engine is rough should make no difference. Older cars are in general self service unless you either do not mind the cost. Or you are under the illusion that paid for service today is ethical and fair in most cases. Just mentally get over it because that is far from true all too often

Last edited by barry12345; 06-12-2016 at 09:41 PM.
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  #36  
Old 06-15-2016, 05:21 PM
Diesel Preferred
 
Join Date: Oct 2007
Location: Charleston SC
Posts: 2,788
Given the temperature difference between #4 and the rest of the cylinders, I would recommend that you swap injectors to see if the problem follows, and then swap delivery valves and holders if the problem remains. Replace the copper washers when you move the delivery valves. Use caution, study up, as your injection pump has the type of fuel element calibration that can very easily be messed up if you do the wrong thing. In addition, you need to be clean clean clean so no dirt gets into the system and damages either an injector or a delivery valve.
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Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC
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  #37  
Old 06-16-2016, 04:50 PM
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So easy as well by monitoring the glow plug of the cylinder affected as you go along. Your thermal temperature reader should be good enough in your case.

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