Fuel pump issues dt 466!!2005

next issue. Truck was running ok for 80km. This morning zero fuel pressure and oil pressure stayed at zero too. I got it running yesterday by blowing air thru the little ball valve inside the fuel pump. What helped. Today I replaced that hex key valve. And can’t get it to prime. What can it be. Please advise

 

I can understand why I lost fuel pressure. But not the loss of oil pressure. Can it be that the ipr valve gave up ? I am lost, and the area I live in. It’s hard to find a good mechanic. Unless I spend 3000 bucks in labour at the dealer. They might figure it out. But I don’t have the money for that