Originally Posted by
Hondo6
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IF (and that's a big if) the bottom bracket is indeed an FSA Power Drive bottom bracket, you may find the info at this link useful. (The procedure is generally applicable to other types of cartridge-type bottom brackets as well.)
I read all of this three times. These are great leads, thank you. I was planning to buy myself a few bike tools (chain removal etc). But after looking at the BB assembly I know I'll reach a hard stop trying to do a full cleaning myself. If the tool is similar to the Shimano line then my local bike shop should be able to do a replacement.
Kudos also to the people that pointed out that the noise might be coming from a different source. It isn't however. And the loudness of it is proportionate to the amount of force I apply to the left pedal.