My '84 came with a really loud fuel pump, the PO mentioned it and
said he'd even changed the pump & it was still loud. During the 'get
to know it phase' the van ran out of gas at the 3/4 mark on the
gauge, I limped back to my house and added 2 gal and it ran great
into town, stopping at the gas station showed it should have had more
gas. I tried that experiment one more time and it needed gas when 12
gals had been used.
I put a new tank in and that fixed both the fuel pump noise and I can
use the full tank now. I cut the old tank open (
http://s197.photobucket.com/albums/aa190/becida/84%20Fuel%20tank/ )
but I did not see the problem. I took the cover off the sump but no
picture, there was nothing there to see either.

Now when I start to hear the pump I change the plastic filter (before
the pump) and the pump is quiet again.

Rob
becida@comcast.net