Fuel issue

[Bdawg22]

I have a JD 4310 that doesn’t seem to be getting enough fuel to start. It will start if I use starter fluid. After running a while if it gets below 2000 rpms it will die. So I cannot idle it down very much am if I put too much load on it then it goes below 2000 and dies. I have to use starter fluid to get it restarted.
I have disconnected lines and checked flow and have changed the filter. Any ideas would be greatly appreciated

 

[gengine]

I'd start by blowing compressed air through the fuel lines, somewhat gently, to clear any obstructions. I've also seen where the fuel return lines being plugged will do that as well. That being said, if the injector pump is being fed fuel well, and with the injectors able to return the excess fuel back to the fuel tank, then your injector pump isn't pressuring up the fuel for the injectors until it get some RPM's. May need a rebuild, but that's my gut instinct.

 

[Harry in Ky]

I have a JD 4310 that doesn’t seem to be getting enough fuel to start. It will start if I use starter fluid. After running a while if it gets below 2000 rpms it will die. So I cannot idle it down very much am if I put too much load on it then it goes below 2000 and dies. I have to use starter fluid to get it restarted.
I have disconnected lines and checked flow and have changed the filter. Any ideas would be greatly appreciated

Once you've covered all the bases, filters, screens, lines, ETC and it still seems starved for fuel, it could be the lift pump. Often if I suspect that I will substitute an electric pump in its place. Just hang it on the hoses, hook up a couple jumper wires and try it out. See if it makes a difference or not. Sometimes even try a jug of CLEAN fuel hung on the side and the electric pump pulling fuel from it to eliminate the tank, filter(s) and lines if suspect.

 

[ruffdog]

Once you've covered all the bases, filters, screens, lines, ETC and it still seems starved for fuel, it could be the lift pump. Often if I suspect that I will substitute an electric pump in its place. Just hang it on the hoses, hook up a couple jumper wires and try it out. See if it makes a difference or not. Sometimes even try a jug of CLEAN fuel hung on the side and the electric pump pulling fuel from it to eliminate the tank, filter(s) and lines if suspect.

Yep^^^see if the injector pump is getting fuel to it.