Little smokin and a stu stu stu studder!

[cowsmowmygrass]

My attempts at replacing the filter with the part number 001081778R93 was unsuccessful. The filter has a felt grommet on the open end that seems to be the amount of distance I was prevented from pushing the filter up into the housing.
Slept on it. Put on my reading glasses, got in good light and viewed into that can. There was what possibly was the lower felt grommet from the old filter corroded and stuck in there. After careful extraction the old grommet came out and this WAS the distance needed to seat the new filter into the housing. AH! Big Red running again.
BUT, it only ran for about 20 minuted before missing and belching the gray smoke again. Another fuel clog?
I have replaced the in-tank screen filter and the primary can filter. Next, is the secondary can filter? This would be no big deal, just a repeat of the primary filter, BUT there is a tagged wire attached to the bolt on top of the filter. This must be to indicate when this filter bolt is ever removed. Well, I have to remove it to change the filter. The warranty is over anyway, so I see no harm.
Here I go again.

 

[cowsmowmygrass]

Frustration for days as I have been diagnosing and changing fuel filters.
Now, the frustration becomes fear of serious problem.
Let me review the current situation:
1. All fuel filters I know of are brand new. 1 in-tank screen, 2 can filters
2. Fuel flows through all the way through the lines from tank to last banjo bolt on top of injection pump. The stream is steady. Every fuel checkpoint and banjo bolt sprays fuel when I break it open and hand pump.
3. Engine starts, runs fine, accelerate to PTO 540 rpm. Brush hog for 10 minutes and then sputtering and gray smoke. Once I continued until engine died. I opened hand pump. Resistance was on the upstroke, not the down. Continued pumping. Heard gurgling from fuel tank.
4. To test fuel cap venting, I left cap open and tried again. Finally, started. Ran 10 minutes brush hogging, then sputtering and smoke again. Must not be fuel cap.
Now what?
Does it sound like a vapor lock? What can cause a vapor lock?
Eager to hear any diagnostic theory and idea.

 

[EMB5530]

First off I feel I should get this said and out of the way. I am not a diesel mechanic! Therefore hopefully others that have much more experience on the issue itsself will weigh in. Now to start with what is the thread you started to which you explained the issues/symptoms. Also give the most info you can so everyone that may have the ability to help you can get a good idea of what is going on.
But lastly to answer the original question.
If you are of the ability to change the timing on your tractor then it would be a start. I would keep in mind the following:
1. Mark the original spot where the pump is set
2. Be sure to adjust in small amounts
3. Get as much info on/from tractor as possible (ie. checking fuel lines, filter, flow through fuel lines ect. and also a service manual never hurts)

I hate to tell you to go ahead and advance it as I have not messed with enough diesels to know if this is just a issue of too retarded timing or if it can be an issue with it being to advanced. All I can say is advancing the timing on my machine fixed the problem.

Good luck and keep on posting and hopfully someone will have some good info for you too.

 

[SSdoxie]

I'm not at all familiar with this engine or fuel pump system, but you mentioned that the one time you let it dy and tried to prime with the lift pump handle there was resistance in up stroke not down. This indicates pressure on the back side of the diaphragm pump. Several years ago I ran into a number of Duetz engines that would run out of power for lack of fuel after running 1/2 hour or so. We finally figured out the supplier of the lift pump had assembled the base housing of the pump 180 degrees out. The oil weep hole in back side of the pump was at the top of the pump instead of on the bottom side, this allowed the engine oil to splash in and lubricate as intended but oil could not drain out and caused a pressure on the diaphragm so it could not stoke completely and had lower fuel supply. Just a thought you might want to check out.