I was pushing up Education Road the other day (I underestimated the hill, but that's irrelevant), and noticed a small clicking noise on the downstroke of the right-hand crank.

IT doesn't occur when I pedal seated, or even when I pedal on the flat, out of the saddle. It only occurs when I'm putting some load on up a hill.

Any thoughts in what it might be. I am thinking bottom bracket or pedals

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Loose nuts, on the chain rings that is.

If you have cleats which lock into your pedals trying dropping some oil on your pedals pivot points.

Really, could be coming from anywhere,especially if a carbon frame as noise from the back can sound like its coming from front and vice versa etc. As you put torque through the frame, especially when standing, creaks can often come from lots of different places.

Noise while pedalling, possibly cleats or bottom bracket, if you do oil your cleat, don't go walking inside the house on them! (previously when I had the old Look Delta style cleats that were notoriously noisy, I used to rub candle wax on the pedal surface that kept them quiet, and not as messy as oil.

If I ride in the rain a bit, my BB30 bottom bracket can get noisy, a bit at first like a tick, then a creak, need to pull it apart and lube it.

I've also had the fork dropouts front and rear causing creaking noises, add some grease to the axle and drop out. I was chasing a creaking stem once, turned out to be the rear dérailleur hanger that need a lube job, go figure!.

Also, make sure your shoe isn't flicking anything like the rear chainstay on its way around.

Luckily it isn't a carbon frame, so that rules out that one!

Yep, as Jilden suggested, sounds like a symptom of chainring bolts not tightened enough. Hopefully that's it because finding creaks on carbon frames can be tedious process.

Ah, odd noises from your bike - hard to find? Yep, they can be hard to find all right...

I had a loose cassette that sounded like noise in the pedals, took a while to find. Apparently the wrong spacer was used.

i had a click/crack on my carbon bike that started on hills and eventually was on every pedal stroke -- and much louder.  I tried everything until I concluded it must be bottom bracket, so I took it to the lbs.

They said they just greased it and put it back in, sound gone ... for 2 weeks.  It returned, I pulled the cranks and BB out myself and greased the hell out of it.  Sound gone ... for weeks and counting.

Is a bb hard to pull apart?

not really - what kind is it (bike/cranks/bb?)

I've pulled apart a few, happy to help you out if you want. Specially seeing as I can't be going any rides for another week or so till I can get the bike fixed up. 

Might have to borrow your tools!

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