I am basically an amateur in regards to bike mechanics and repair, and have come across a slight issue. I recently started winter commuting on a 2013 Trek 820. I feel comfortable in terms of overall preventative maintenance due to the salt, but while going over my bike, I noticed that the chain rubs for a short duration at the same point, every revolution of the crank.
I have some ideas in mind, but given my lack of experience with the mechanical repair, I feel more comfortable asking those who have significant more experience than me. What could the issue be, and how could I go about fixing it?
If you need anymore information in order to help, please ask and I will do my best to provide the necessary details, including pictures.
Your assistance is graciously appreciated!