Re: Slow filling of fuel tank?
Heck, I pump my own diesel all the time and only have to deal with the trickle or shut off for the last 8 gallons- I love going to Oregon because that's the one time I don't have to mess with it (although I keep my cap locked to prevent quick draw gasolining!)
One, has it always done this, is it a new issue, or new-to-you van?
Second, you've tried different service stations, right? The sensor on a pump is in a little hole at the front of the bottom of the nozzle and the hole gets crap in it over time causing it to shut off constantly. Got a little schooling in this pre-SMB when I was having problems at a pump. The clerk came out, whipped out a paper clip and dug junk out of the sensor hole... yeesh, when I stopped cowering from the expected explosion I realized what he'd done totally fixed the pump.
If you're getting it at the same place you might have a pump problem. If not, I'd second the air vent.