Xjs been stored for a couple of years

Hi try to make this short vehicle not used for a while ...replaced fuel with fresh checked oil water etc...when i turn the ignition on both fuel pump relay and main relay make a clicking noise...the pump (its external on theses cars) just makes a single thud noise and thats it car turns over does not fire...if i grab the pump when ignition is turned on you can feel the thud...Is the my pump gone...Thanks