Maybe. One thing mentioned was you had new pedals... did the click happen prior to new pedals? if no, go back a step and see. Also, from time to time a loose BB fixed cup will do it, best to remove then hand tighten and feel for play, you did not say what threading you are using, but sometimes British threading, 1.370 x 24 tpi (LH threading on fixed cup) will be loose but by the nature of the reverse threading won't back out. That nasty gunk in the BB is not helping the problem, while the bb is out remove the seat post and sight down the tube for debris, If the bb is a non cartridge type which we assume it is... be sure you have a bearing sleeve in the middle of it all.