New Holland L783 Fuel Prime Troubleshooting

Now that we have the New Holland L783 skid steer running when we feed it diesel, we need to figure out why the fuel system will not prime itself. Queue the troubleshooting! Join me and see what I find. As always I welcome feedback and recommendations.
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[@user-od6ke8on8z]

My skid steer is doing the exact same thing it only runs when I fill up the filter full of gas did you figure out what the problem was I've been trying for a couple days and can't get it

[@dieselpackgarage8796]

I ended up replacing the manual primer pump due to the broken seal inside and it works fine now