Oil & Fuel Out of fuel DK45s

[buyerjohn]

Next step would be to remove your fuel shutoff solenoid and see if it's pulling in.

(#2 in this pic.)

we pulled the solenoid (#2 as labeled above)...it works properly...except no fuel came out ....just oil was on the end of the solenoid rod and the solenoid fitting...are you sure this is the fuel shut off???? I'm thinking that it's the engine shutoff solenoid but can't be sure from the shop manual drawings....also, can anybody tell me what fuses would control fuel flow on this engine? Again, I can't tell from the manual as they are not very clearly labeled. What is the safety start relay? What is the FFT controller?

 

[JASTN70D]

"are you sure this is the fuel shut off????I'm thinking that it's the engine shutoff solenoid but can't be sure from the shop manual drawings...."
They are one and the same as far as I know

"also, can anybody tell me what fuses would control fuel flow on this engine?"
The Fuel shutoff is the only item in the Fuel path that would be fused I would think. In my experince they only way to stop a Deisel is to stop the fuel... Not like a Gas engine with electronic spark required. Desel just needs fuel heat and presure so the conditions still exist with no electrical power.. Therfore the shutoff solenoid is needed

If you look at this as just a fuel path issue it should help.. In the picture the bolt in center behind the wire, I take its a banjo fitting? Fuel comes out at this point when pumped.

If the Solenoid is removed and you pump fuel is there still no fuel coming out at the solenoid hole? If not it seems there would be a block in the path between the banjo fiting and the solenoid.. Unlikly I would think... But as you only cracked the fitting maybe you need to look further at that point for a blockage

 

[buyerjohn]

"are you sure this is the fuel shut off????I'm thinking that it's the engine shutoff solenoid but can't be sure from the shop manual drawings...."
They are one and the same as far as I know

"also, can anybody tell me what fuses would control fuel flow on this engine?"
The Fuel shutoff is the only item in the Fuel path that would be fused I would think. In my experince they only way to stop a Deisel is to stop the fuel... Not like a Gas engine with electronic spark required. Desel just needs fuel heat and presure so the conditions still exist with no electrical power.. Therfore the shutoff solenoid is needed

If you look at this as just a fuel path issue it should help.. In the picture the bolt in center behind the wire, I take its a banjo fitting? Fuel comes out at this point when pumped.

good points about the electrical issue with diesel. I need somebody to confirm if this is indeed the fuel shutoff and if so then I'm at a loss....

yes, there is fuel coming out of the banjo fitting both when the ignition is used and when hand pumped via the fuel filter. So what the heck is stopping the fuel coming out of the injector pump? The solenoid clicks when installed and moves in and out when operated uninstalled. So those who said I'd see fuel come out of the solenoid location were incorrect (unless I have a majorly broken engine!)...it seems to make sense that the solenoid would push on some sort of mechanical diaphragm that's protected on the solenoid side from fuel....what else can I do to isolate the injector pump as the real culprit here?

If the Solenoid is removed and you pump fuel is there still no fuel coming out at the solenoid hole? If not it seems there would be a block in the path between the banjo fiting and the solenoid.. Unlikly I would think... But as you only cracked the fitting maybe you need to look further at that point for a blockage

There wasn't any fuel in the solenoid..there was black oil on the end of the solenoid...so I can try starting it with the solenoid removed, but I doubt I'll see any fuel come out that openning as there isn't a trace of fuel just now. We did remove the banjo fitting...there was no blockage and the holes are aligned correctly.

thanks, John.

 

[Willl]

it works properly

Would of thought for sure this solenoid was going to be the problem.

except no fuel came out

I wouldn't expect any, at least not out of the hole the solenoid was in.

This is too weird.

Unless this pump isn't spinning, it should be pumping fuel.

 

[buyerjohn]

Would of thought for sure this solenoid was going to be the problem.

I wouldn't expect any, at least not out of the hole the solenoid was in.

This is too weird.

Unless this pump isn't spinning, it should be pumping fuel.

how can I test the injection pump without pulling it? which is a nightmare because of a 1/4" design mistake by the engine manufacturer...

 

[JoelD]

Would be great if someone could post a picture of the internals of the injection pump and selenoid assembly. My parts manual seems to have everything but.

Joel

 

[JASTN70D]

I need somebody to confirm if this is indeed the fuel shutoff and if so then I'm at a loss....
I have no doubt it is the Fuel shutoff

"I wouldn't expect any, at least not out of the hole the solenoid was in"

I see I was assuming the Solenoid plunger was itself blocking the fuel path... By this statement I guess it actuates something that blocks the fuel path then?....

No matter how you look at this it must be an issue with the Pump.. I remember a post awhile back were someone was having the same type problem and found the pump was not spinning because the key on the shaft was missing and or out of place..This was after a reinstall of the pump.. Just something to consider.

Even without the pump spinning I would think fuel would make its way inside the pump up to the Solenoid.. It seems with the solenoid removed you should be able to get a very week stream of fuel at the injector side of the pump with just the pressure from the fuel pump.. If you could that would eliminate a blockage as the issue.. Although a blockage seems very unlikely it just seems strange the injector side is completely dry.

Yea a pump diagram would be very useful. If the solenoid actuates something, whatever it is could be stuck?

Is lever 1 spring loaded? Does it move when the solenoid actuates? It looks like if you removed the cap below lever 1 you would see the shutoff mechanism.. Although opening even this part of the pump may be something that should be considered carefully,
Hopefully the others with much more experience will chime in

 

[Willl]

How close does your solenoid match the one I posted ?

 

[JASTN70D]

By the way if this is a Pump issue you should know there is a seperate Federal
Emissions warranty on the pump for 5 years or 3000 hours for all Tractors produced after 1996

 

[buyerjohn]

How close does your solenoid match the one I posted ?

pretty close...I think it was black instead of gold color ... the plunger moved in and out about an inch or so to fully retract...it needed to be grounded when removed.