Loader MF44B Loader will not stay running

[Laserlee123]

It's cold here in Minnesota, and the MF44B I just bought won't stay running, I have the block heater plugged in, fuel in the tank, fresh batteries, ether, which allows it to kick over, but there doesn't seem to have fuel pressure, I just ordered a Lift pump, I'm hoping that does it, I might have to replace all the olives in the fuel system. What do you think?

 

[Masseywrench]

Is that the model that has the lift pump mounted directly to the injection pump, and the primer is a handle that you pump up and down?

 

[Laserlee123]

Is that the model that has the lift pump mounted directly to the injection pump, and the primer is a handle that you pump up and down?

No, the injection pump, I believe separate, the fuel pump is mounted on the passengers side, <sic> the injection pump is on the drivers side.
here is a picture of the lift pump,
I've bleed all the injectors and the return line (to the fuel tank) and I keep getting air. I suspect there is some air induction to the system some where, maybe a leaky grommet or "olive" on one of the fuel line connections, but there is no sign of leakage. Or hopefully and most probable, a bad lift pump diaphragm, I bought one on ebay on Monday and it arrived here, in the northwestern woods of Wisconsin, the next day, unbelievably fast.

 

[Masseywrench]

I just realized your post says 44B which is a loader. I was thinking you had an old 44 tractor.

I have have seen this same type of problem before on an Ingersoll twin steer loader. Ended up being trash in the line but it was just as it was leaving the fuel tank going through a shut off valve before it traveled on to the lift pump. It would run for a period of 5 to 10 minutes and choke out and die. The fuel filter was always half full when it died. This model had the glass bowl on the fuel filter with the water drain on it and as it was running, I could hold a flashlight up to the bowl and see air bubbles going through the system. I redid every connection and it would still fail. I ended up finding the petcock shutoff inside the frame rail underneath the loader. Pulled it apart and it had a piece of plastic in it along with hair and bugs and just about everything else. I dont know how the tank mounts in yours but you might check for blockage.
If you have a 12v electric pump you can attach it to the tank line and pump it into a bucket to eliminate the tank.

Only other place that is prone to causing this is the o-ring on the fuel filter moving when you install it and blocking the fuel delivery there.