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As ever, and totally guessing here, but if it’s threaded it’s probably not your bb.
Tighten up your quick release/wheel bolts, check stem bolts, grease seat post, swap pedals out.
fredtc-
This is a long running saga where I have isolated the problem to the crank area - definitely not wheels since it happens when I alternate from back to front (and vice versa) pressure on the pedals; probably not stem for that reason too, particularly as no pings when out of saddle and pulling on bars in all directions, happens if standing so not seatpost, have swapped out pedals.
The problem also gets worse over time, i.e. if I pull everything apart and put it back together again, I get blissful silence for about 2 weeks, then one ping every so often for another 2, then slowly over another month or so it gets to the point where pedalling out of the saddle has the bike in much protest.
Problem did only arise after I swapped out cranks but I replaced BB apart not long before, so if someone can help me with diagnosing loose cranks that would be helpful.. Have already done up the crank bolts as far as they can go with a 6in 8mm allen key though.
My uneducated diagnosis of the situation is that the suspected cross threading etc may have worn down the frame threads enough to knock the BB ever so slightly out of alignment (I can feel the clicks through the left side crank/pedal) each time it gets pulled in a different direction, although the threading is definitely firm enough to hold everything very, very in place and removing the BB takes a fair amount of effort.
youClown
Bloody BB refuses to leave me alone; pinging sound has returned after a complete stripdown and running a toothbrush over the frame threads with degreaser. Now my biggest worry is that I may already have cross threaded or stripped part of the BB shell (when I removed the BB there was definitely some thread that had been stripped), since the BB threads themselves seem fine (though I have no idea if it's the cranks being loose on the BB) - is it worth buying a tool to clean/tap my frame BB threads (toothbrush wasn't good enough) or should I just pay the 30 quid for my LBS to do it?