L3000DT Starts, Idles but w/n Accelerate

[tmwfreeman]

I have a L3OOODT (4 WD) that will start and idle for 15 min and seems to accelerate to higher rpm but then it shuts down like it's not getting enough fuel. The Fuel filter was changed as it was excessively dirty. Replaced the lift pump and that seemed to help somewhat. Injector lines were sprayed out with carb cleaner and re-installed but no improvement. Thinking about removing the fuel tank, cleaning and re-installing along with changing the fuel filter again. Is there anyway to measure the fuel pressure coming off the connections from the injection pump? Not sure how many PSI is should be and what brand of pressure tester I should rent/buy. I know the injection pump and injectors aren't cheap. Thanks in advance

 

[Roadworthy]

If it was my tractor I'd want to know whether fuel was exiting tank at a sufficient rate. Sometimes a blockage will build up right where the fuel exits. Break the fuel line close to where it exits the tank to see what kind of flow you get there. I'd let it flow for fifteen seconds or so into a container just to see what you're getting. It's possible for fuel to seep slowly bast a blockage and allow you to run for awhile but not have enough flow to keep running.