click click from where ?
 

so on my commute couple days ago, I would get a click click on one revolution of the crank. It sounded down near my bottom bracket. And only when pedaling, not coasting
got to my destination, turned bike over, pedal, no click click.
Rode home, click click
put bike on my repair stand, pedal, no click click, go through all the gears, no click click, spin the front wheel, no click click, spin the pedals, no noise
so I thought, ok, only under load, to try to duplicate the load, I gently squeezed the rear brake to give resistance ( load?) no click click
no slop in the crankset, and cant duplicate the sound
clean and oil everything, adjust everything while its on the stand
next morning riding into town
about a mile in......click click returns

so it seems to me, its only gonna sound out when under load.
Im thinking BB.
Don't know if related, about 3 weeks ago ( 200+miles) I installed a new scram chain and new pulleys in my rear derailier, but sound did not start until just recent
load ? I weigh in at 190+- and carry panniers that are rearely empty
oh and it makes no difference if im on level ground or going up a hill

Probably a pedal bearing. Check chainring bolts, crank bolts and ride it to make sure your crank isn't just hitting your front derailleur cage first. Then either overhaul or replace your pedals or just live with it if you can.

yep I did watch the chainring going through the derailuer while the click click noise, and it is not hitting
Ill pull and lube the pedal bearings tonight,

Once per turn of the cranks clicks are just about the hardest thing to track down.

Normally in diagnostics, I say go with the most likely first, but rather than check BBs or parts that are either dificult or expensive to service, I suggest going with the easiest first.

Start by removing both pedals. If you have a good (quiet) pair of pedals on another bike, switch them and see if it helps. While there, clean the threads and mating faces and regrease. If the new pedals are quiet, put the old ones back on because sometimes simply removing and replacing does the trick (IME almost half the time).

Once you've eliminated the pedals, it gets tougher, and the probabilities depend on the type of cranks and BB.

So give the pedals a shot, and come back with more info if that doesn't help.

BTW- often a so-called BB or pedal click, turns out to be saddle rails, or in one case a headset problem, so be open to ALL possibilities.

In my experience, this is a good first place to start. The 'I have a click' posts are rather common, and I post the same in each, but FBinNY has it. Remove the pedal, clean and regrease the thread and reinstall. Its important to get the right torque when reinstalling. Even a tad too loose will have an occasional click especially if the threads are dry.

*EDIT* Putting the bike on a trainer then turn up the resistance is a good way to get load and FEEL where the click is coming from with you hand.

Don't forget shoelaces as a possible source.

Or the seat assembly. Post clamp, rails, seat body can all make click sounds when pedalling. If the noise only happens when sitting and pedaling then I would look there first.

not the pedals, switched em out and went for a ride, did not fix it. and Ive gone through everything again making sure nothing is loose, dry, or out of adjustment
I then thought , well its a new chain and maybe the masterlink is not right and hitting on every revolution, nope
lifted my butt off the seat and pedaled, noise still there
no slop in the headset
whatever the noise, I am not concerned that the bike will just brake on a commute, if anything the noise will get worse and become obvious where its coming from.
It is a 7 year old bike, Ive only owned since august, who knows how many miles

Mine was the crank set..Changed it and all is good.


Don't believe it will cause a crash.

My click was a cable end cover hitting the crank.

There are some simple tests you can do.
Try pedaling standing, if it doesn't click then its something in the seat. Try pedaling in quarter turn increments to see if you can isolate if the crank is hitting something.