> The fuel pump on my 85 1.9 WBX has been making this noise as if a giant
bumble bee

Those are the bearings in the fuel pump letting you know they are becoming
worn.  I would be especially concerned if the buzzing noise starts changing.
My '85 started buzzing this summer and I had to replace the original fuel
pump on my '88 Audi about six months ago.  I would recommend replacing the
fuel filter at the same time.  Fuel pumps are $150 at Bus Depot and $160
minus list discount at Vanagain.com .

Keep in mind that an excessively loud fuel pump could stop with no other
notice.

Good luck,

Chris,
'85 Westy.