In between torturing myself trying to get the tank pump back in, I decided to change my radiator that I had been putting off. That was pretty easy, and I was staring at the engine, trying to get it to tell me what was wrong with it, when I noticed this thing on the fuel rail. It's about 2 1/2 inches round, 3/4 inch thick, with two unions. Looked in my documentation and don't see it anywhere, and of course I have a B234 engine so I really don't know. I could bypass it, and I'm going to tomorrow, but anyone know what it is? Did get the pump back in, but have to go get new clamps. I quit for the day- back at it tomorrow. Thanks again for the help.