Soil in the fuel tank

I think i may have done something very silly

I filled the van up with some spare diesel we had but i think there may have been soil deposits in the tub

Today i got about 5 miles before the engine cut out. It now drives but cuts out when off the throttle

It's a Citroen Dispatch 110 HDI

Obviously drain the tank and refill but is an engine/injector rebuild necessary?

Thanks