jack tire off ground about 2 inches
use a pry bar and stick it under the tire and lift/bounce it up and down to see if there is slop in the BJ
helps to have a spoter to help
grab the tire at 12 and 6 o clock see if you can rock it back and forth to check top BJ
might as well check the tie rod ends also
grab tire at 9 and 3 o clock push pull looking for slop in any of the tie rods,idler arm,center link,pitman arm/steer box
do a visual on the rubber bushing on the upper control arms...you want the thru bolt centered in the bushing and not to one side of the bushing...
that will get you started anyways
good luck