If you have debris in the tank bigger than the pump flange hole throw the tank away... Get brave and do it properly. Then there is no doubt, no being stranded on the freway, no unhappy pleasure trips. Also if you miss a gathering of her family - no more sex - ever.
Good - Fast - Cheap: Pick any two.
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i