Ford 801 wont stay running

rcvanness

New User
I'm hoping someone can help. I have a 1958 Ford 851 Diesel. This past winter I forgot to mix the diesel fuel with kerosene and it gelled up. Once everything thawed. I drained the diesel fuel out, put in new and a new fuel filter. Now the tractor will start but wont stay running more than a couple minutes at a time, if that. Is it possible the fuel gelling messed up something in the injection pump? Any help will be greatly appreciated.
 

I believe I did so correctly but I am unsure. I loosened the little screw on top of the filter and left it a couple min till fuel begin to flow out and while trying to start the first time i took the "out" plug out of the front of the injection pump till fuel begin to pour out of it while cranking.
How do I verify good flow to the pump?
 
To give an update, After checking the fuel flow and everything else possible I narrowed my issue down to the Roosa master pump itself. I have the reseal kit and have disassembled the pump now just gotta put it back together. Any advise or tips will be greatly appreciated
 
Ok. I have rebuilt the injection pump, the governor flex ring had disintegrated. I replaced it with the 1 piece from Stanadyne. Put the pump back on. filled up with new fuel and filled the pump as well. Has the same problem. it will run but will die just like it run out of fuel. Found the possibility it's out of time. Gonna look at that tomorrow. any other suggestions would be greatly appreciated. thanks
 
probably not timing since it only goes on one way and if its off in the pump it wouldn't crank at all or it will just smoke a lot. did you try removing the bypass line from pump could be plugged, just a thought
 
yes, I had one clogged and it would run a minute or so then slowly choke down and die . you can take it off at the pump and crank it ,its kind of messy but that will rule that out. Question does it crank after it sits a minute
 
(quoted from post at 13:48:01 04/19/15) yes, I had one clogged and it would run a minute or so then slowly choke down and die . you can take it off at the pump and crank it ,its kind of messy but that will rule that out.

I tried blowing air thru both lines this morning. It bubbled in the tank. But I'll try running with out it and see. That's what mine is doing it'll start, run, die and depending on how long you let it set depends on how long it'll run each time.
 
mine was clogged in the fitting at the pump, may not be it but worth a try.did you check fuel flow at pump kind of sounds like its running out of fuel also.
 
(quoted from post at 15:13:05 04/19/15) mine was clogged in the fitting at the pump, may not be it but worth a try.did you check fuel flow at pump kind of sounds like its running out of fuel also.

I didn't think about the fitting. I'll check that. Hasa steady stream thru the filter to the pump.
 
I took that fittin off the pump blew air thru it made sure it was good and clean. put it back together it ran for about 5 min and died doing the same thing as before. I have roughly 10 gallon in the tank so I know that aint the problem.
 
(quoted from post at 22:19:36 04/19/15) I took that fittin off the pump blew air thru it made sure it was good and clean. put it back together it ran for about 5 min and died doing the same thing as before. I have roughly 10 gallon in the tank so I know that aint the problem.
till sounds like fuel supply. I don't know.
 
I've been searching the forum here about this roosamaster pump and apparently the metering valve in the pump can cause this issue too. But I'm not sure. I've got a call in to a local tractor mechanic. Cause at this point I just want my tractor running again. I've been 4months now without it
 
I'm betting that you've got something floating around inside the fuel tank if blowing air back through the line lets it start and run for a few minutes. Whatever it is will float around until fuel starts to flow and it will get sucked toward the outlet and clog it when it gets there. Blowing air back through the line will push it away from the outlet so fuel will flow again for a while until it does it again. likewise if you just let the tractor sit for a while after it happens, whatever it is will float away on its own eventually with the engine not running because there's no flow and therefore no suction at the outlet.
 
Thank you everyone for all your help. I took what rusbuket had said about the return line being clogged and went from there. Took about that side of the pump played with the check valve and the tractor ran for about 35 min before it started doing the same thing again. run for a few second and stop. So I removed the check valve completely and the tractor has been doing hard labor grading a roadway for about 6 hours today non-stop since removal. The only question is can anyone tell me why I need this check valve, for now tho I'm gonna run without it until it causes problems.
 

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