DK 35 Won't Stay Running

[Damifino]

Hello Pack, just had my first ever issue with my DK35, I was hooking up a trailer on 3 point, left motor running, then I heard it sputtering ran over to turn key off.


The fuel gauge showed ｽ tank and when I removed fuel cap and put flashlight in tank, it was bone dry. To date here is what I done, refilled tank with fresh diesel, removed filter bowl and replaced filter.

Filled bowl to top and reinstalled. Then I loosened injectors one at a time turned over until fuel ran out re tightened and hit key, started ran for about 20 seconds then quit, I have done this several times.


It sat overnight and this morning I went out turned key and it started and ran for 1 minute trying to rev and idle and repeated till it shut off. I don稚 know how much fuel the pump is supposed to put out but it sounds as if it痴 starving for fuel.


Also when I loosened injector nuts it looks like the pressure was not there but don稚 know if that痴 normal.

I am open to any and all suggestions.

Thank You
Dami

 

[DieselBound]

Hi, Dami,

Check for obstructions in your fuel line. Disconnect from the filter inlet side and blow back in to the tank. You may be getting debris clogging the outlet nipple.

Another thing to check for is a pinched fuel line. I had this happen not too long ago. I was out in the field and committed myself to disconnecting the fuel line at the bottom of the tank (I knew I was running low on fuel) and as I was looking up from underneath I saw that a stick had pinched the fuel line, had collapsed it. Pulled the stick and then fired up and stayed running.

I don't believe that there are any tank-level sensors that would keep the tractor from running. Might have one flaking out, but that shouldn't result in the tractor not running.

 

[Damifino]

Hi, Dami,

Check for obstructions in your fuel line. Disconnect from the filter inlet side and blow back in to the tank. You may be getting debris clogging the outlet nipple.

Another thing to check for is a pinched fuel line. I had this happen not too long ago. I was out in the field and committed myself to disconnecting the fuel line at the bottom of the tank (I knew I was running low on fuel) and as I was looking up from underneath I saw that a stick had pinched the fuel line, had collapsed it. Pulled the stick and then fired up and stayed running.

I don't believe that there are any tank-level sensors that would keep the tractor from running. Might have one flaking out, but that shouldn't result in the tractor not running.

DieselBound, thanks for your reply, just came back in all lines are clear, It started and ran for 50 seconds, tried to rev and then went to idle and shut down.

 

[DieselBound]

Just "seems" like a fueling issue.

Do these engines have a fuel primer on them? If so, when it shuts off see if the primer works: on mine the primer was pulled down- vacuum (fuel being pulled but wasn't available- blockage).

Loosen up your fuel cap. There's venting in fuel caps and if there's a problem venting they'll create a vacuum situation.

 

[ritcheyvs]

Check for possible air leaking into the fuel lines. That would cause similar symptoms.

 

[DieselBound]

Check for possible air leaking into the fuel lines. That would cause similar symptoms.

Air intrusion tends to have a greater, negative, affect when starting (cold): having a section of clear fuel line coming in to or just out the filter would be helpful in monitoring for such things. Running for 50 seconds would tend to suggest that there's a good solid chunk of fuel there to go with (but then it seems to wane).

 

[Damifino]

Air intrusion tends to have a greater, negative, affect when starting (cold): having a section of clear fuel line coming in to or just out the filter would be helpful in monitoring for such things. Running for 50 seconds would tend to suggest that there's a good solid chunk of fuel there to go with (but then it seems to wane).

Thanks to all who have replied this far, will tackle again in the am and report back

 

[DieselBound]

Another thing to try and chop the problem down in size would be to pull fuel from a separate container of diesel. If your engine has a mechanical fuel pump (IP) then you'd be OK/good to try running from a can of Diesel Purge: I do this with my older VW TDIs when I change fuel filters. Maybe OK for other types of diesel injection systems (Pump Duse or Common Rail), but I cannot speak to those with any authority. Doing this would rule in/out the lines to the tank and of the tank itself.

 

[powerscol]

Not sure how your fuel bowl is set up, but on mine there is an off, bleed, an run position. When changing my filter I can turn the lever to bleed and fuel will run into the fuel bowl and bleed the air out. However I once left it on bleed and the tractor would die as you mentioned. Take another look at the fuel bowl when it dies and see if the bole has air in it.

Just a guess

Otherwise does your tank have an internal screen? if so try blowing the tank line backwards

 

[Damifino]

Another thing to try and chop the problem down in size would be to pull fuel from a separate container of diesel. If your engine has a mechanical fuel pump (IP) then you'd be OK/good to try running from a can of Diesel Purge: I do this with my older VW TDIs when I change fuel filters. Maybe OK for other types of diesel injection systems (Pump Duse or Common Rail), but I cannot speak to those with any authority. Doing this would rule in/out the lines to the tank and of the tank itself.

"Success" :thumbsup::dance1:DieselBound, I do beleive you had pegged from beginning, I went out got air hose put a blow gun with long tube, I then removed the tank to fuel pump hose and lightly

shot air into tank, when the flow of fuel was twice the volume it was last time I checked That felt good.
Hit key and she purred like she has for last 8 years.

Again TBN members came through and I thank all who replied, it is very much appreciated:thumbsup:

Dami