Just started getting this problem today. I had to prime the diesel pump to get the diesel through and when I started it it fired up and took me a few yards then cut out, I pumped the pump again and got a few more yards and had to drive home like this having to keep priming the pump every 150 yards or so. Luckily not very far but any ideas as to what might be wrong. Is there another pump that has failed? I have not had this problem before. Any help would be appreciated. Oh and the tank has diesel in it and I can't see any leaks.