My bike has had an ongoing issue for a couple of months. Most of the time I pedal there is a constant squeaking noise (which I can't pinpoint but seems to be from the chain). This noise only occurs when I'm cycling on the big chainring and completely disappears when I cycle on the small chainring. The noise came back even after I got my bike serviced and changed chain (for general maintenance). The only solution I've found is to wet the chain with a hose before cycling but even then the noise will come back after an hour or so and it's obviously very bad for the chain anyway.
If anyone has any solutions they would be very appreciated.