I have a TBI conversion with in-line pump. I bought the kit from CutomEFIs and they included a Master E2000 pump. Things seemed to be working fine, but I had to replace the fuel tank (and sender) and now I can't get it to start again. The pump is incapable of sucking any air at all it seems. So I used the shop-vac and primed right up to the fuel filter prior to the pump. But it still won't start. I opened the return line, and sure enough, it's still not pumping gas through. I have no idea how this ever worked in the first place. Any ideas what might be going on? I've already ordered a Carter P5001 pump since I hear those are self priming, but it bugs me that I can't make this work. One things that's always seemed strange to me is the fuel filter. It's a big plastic thing and it always has some air in it. Won't that cause trouble for the pump? Somehow it's worked before, but I don't really get it.