twozeronine
Senior Member
- Location
- Middlesex
Over the past week or so my bike has developed a clicking sound that's driving me insane trying to work out where it's coming from. I'm sure it's coming from around the pedals/cranks/BB as it only happens at the same place in the pedal stroke (about 9 - 10 o'clock on the drive side), even when I'm out of the saddle, and it stops if I just freewheel. There's usually two clicks, close together.
I've tried:
- Installing new pedals (greased up the threads and tightened them as much as I can)
- Regreasing the threads on the BB and tightening that as much as I can
- Tightening the bolts that secure the left crank
- Tightening the bolts on the crank spider
- Tightening the bolts on the headset
- Tightening the bolt on the seat post clamp
- Tightening the quick release on the wheels
- Tightening the bolt on the saddle rails
- Tightening the bolts on the water bottle holder
- Put new cleats on my shoes, nice and tight
And no, it's nothing simple like the crank hitting the front derailleur cable.
It seems to be better when I only pedal with my left foot; when I only use my right foot there's still noticeable clicking. As soon as I put both feet on the pedals it becomes very noticeable again.
Could it be the BB bearings? I've only done about 600 miles on this bike, so they shouldn't be worn. I haven't ruled it out yet though, as I don't know how to go about doing that.
I did realise today that I overtightened the cap that fits on the left crank (so much so that I stripped the bolt) . Could that have damaged the bearings, as Park Tools website says that this cap is used as a bearing adjustment.
Sorry for the longish post, just hoping someone more knowledgeable can offer some ideas.
I've tried:
- Installing new pedals (greased up the threads and tightened them as much as I can)
- Regreasing the threads on the BB and tightening that as much as I can
- Tightening the bolts that secure the left crank
- Tightening the bolts on the crank spider
- Tightening the bolts on the headset
- Tightening the bolt on the seat post clamp
- Tightening the quick release on the wheels
- Tightening the bolt on the saddle rails
- Tightening the bolts on the water bottle holder
- Put new cleats on my shoes, nice and tight
And no, it's nothing simple like the crank hitting the front derailleur cable.

It seems to be better when I only pedal with my left foot; when I only use my right foot there's still noticeable clicking. As soon as I put both feet on the pedals it becomes very noticeable again.
Could it be the BB bearings? I've only done about 600 miles on this bike, so they shouldn't be worn. I haven't ruled it out yet though, as I don't know how to go about doing that.

Sorry for the longish post, just hoping someone more knowledgeable can offer some ideas.