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High-pitched ticking noise from crank/bottom bracket

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High-pitched ticking noise from crank/bottom bracket

Old 07-04-16, 08:59 PM
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DPDISXR4Ti
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High-pitched ticking noise from crank/bottom bracket

My semi-recently rebuilt 1993 Barracuda MTB has recently developed a ticking noise that's coming from the crank area. The BB is new - maybe 300 miles on it. The noise occurs once every revolution on the top of the left-side pedal down-stroke. If I'm coasting, no noise. As soon as I put the slightest pressure on the left pedal, the creaking/ticking noise occurs.

I tightened up the crank bolt, but it was already tight and didn't make a difference. Time to pull the arms and tighten the BB? Or is there a tool to do that without removing the arms? Any other ideas?
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Old 07-05-16, 05:12 AM
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Try switching to a known-quiet pair of pedals, with the crank and pedal threads cleaned and greased, before trying more extreme measures.
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Old 07-05-16, 06:17 AM
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Check the chainring bolts too but if that or lubing and/or changing the pedals doesn't cure it, I expect it's in the bottom bracket threads and you will have to remove the cartridge or cups, lube the threads and torque it down properly. There is no way I know of to do this properly without removing the crank arms.
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Old 07-05-16, 08:01 AM
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I recently had a creak in my BB as well on my IGH bike. Instead of speculating as to what it was, I took the entire drivetrain around the BB apart and cleaned/relubed/retorqued everything. Took me all of a half hour and it doesn't creak anymore.
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Old 07-05-16, 09:33 AM
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Thanks for the ideas. I'll report back once I have a resolution.
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Old 07-06-16, 09:03 AM
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Originally Posted by dsbrantjr View Post
Try switching to a known-quiet pair of pedals, with the crank and pedal threads cleaned and greased, before trying more extreme measures.
You win! I've had a noisy pedal before on a different bike, but I really didn't think that's what I had here. Although ~20+ years old, they're high-quality pedals and spin smoothly. But your post reminded me that was the easiest thing to try first, so I just swapped out the left pedal... Bam! Noise gone!

Thanks!
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Old 07-06-16, 10:00 AM
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Originally Posted by corrado33 View Post
Instead of speculating as to what it was, I took the entire drivetrain around the BB apart and cleaned/relubed/retorqued everything. Took me all of a half hour and it doesn't creak anymore.
I had a similar issue, and noticed the BB flange didn't sit quite flush to the shell in front, so I finally broke down and bought a BB tool.

Pulled the BB (after a little confusion, since the sides seemed to turn the wrong ways) and looked; sure enough, it had been installed backwards. Even had the little "<-L R->" markings to confirm it. Presumably the previous owner had the bike upside down at the time.

Thankfully, with a good cleaning of the threads, some fresh grease all around and just a little fuss at the start, it threaded back in the right way and snugged up nice and flush.

Unfortunately now instead of a slight creak as the left crank starts down I've got a slight kaerc as the right crank starts down. Think I'll just turn my music up.
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