I think my BB is quite noisy and was wondering about cleaning and greasing or would just buy a new one if that is better. Its a felt F95 that I have only had a month or so and is in very good condition. The number on the bottom of frame is FT40. I really don't know where to start but am keen to have a go, seeing as I have a friend round the corner who can help me if I get stuck, who also has all the correct tools.
thanks in advance.
You say you think the BB is noisy. Why not first find out if that is the case, before dealing with it? There's no use for all the speculation until you've actually diagnosed the problem (or not).
To isolate all other drivetrain noises from BB noise you have to remove the chain or, shift and maneuver it so that the chain is off the chainrings and lies on the BB shell, without touching any crank parts. In other words, if you now spin the crank, the chain is not involved and not even touching.
Now spin the crank and hold your ear against the frame somewhere where the pedals won't remove your teeth.
A good BB says "shhhhhhhhhh leave me alone".
A bad BB says "rrrrrrrrrreplace me".
Do that and report back.