Please help regarding Bike Noises
First of all I'm not an expert and I pretty much only know the basics of bikes.
Anyways, I've just bought a new bike (a normal gear-changing bike). I rode it for a week and it was fine, but all of a sudden I'm starting the hear a dull clicking noise everytime I pedal. The dull clicking noise happens about twice every pedal revolution, but it does not synchronize with the pedaling position. The harder/faster I pedal, the more noise I get. If I don't pedal (going downhill), the noise is nonexistent and everything is fine.
I usually stay in gear 4 (Total of 1-6 gears). If I increase my gear to 5 or 6, the dull clicking noise becomes a little louder and less frequent. But if I lower my gear to 3 or 2, the noise changes from a dull clicking noise to a longer chain-related noise.
I've tried to find out the reason for this noise by doing backpedals while stationary, but backpedaling seems to have no problem.
Thanks for any help.