Or you can get about 5 or 6 see-through fuel filters,install one(use the others for spares)in-line close to the fuel-tank and keep some hose pinch pliers and a screw-driver(you will need 2)in your coffee can(also used for draining/replacing the clogged fuel-filter).
Drive it with about 3/4 tank of fuel so it will slosh around good when driving on curvy roads.
.
What is going on is there is surface rust inside the tank.With the newer fuels,it more redily dissolves the rust.
After about a month or two of driving it this way, it should be mostly free of rust sediment.