Prime issue at secondary filter housing dd13

Hello, I had an issue last night with the engine just stalling on me on the highway. I pulled over to the side and tried cranking it again and it turned on for about 40 seconds. I was able to get back to the yard but again the truck shut off and wouldn't start back up. I attempted to put starting fluid in the air flow and it turned on but again shut off after 40 seconds.

I saw that the filter housing was empty and it's been a while since we replaced it so I figured that it would be filling up as time went on but it just always looks empty.

I tried priming it again and it finally turned on but it shut off again after a few seconds and all the primed fuel that I used just got eaten up again.

Any idea of what it could be? Check valve on the housing? Or dirty filters?