03-13-2017, 01:52 PM
The sound of my fuel pump varies also (2014 Dlx). Sometimes it is just louder. The first time it got really loud was when I had around 1,500 miles on the bike, so I took it to my dealer to see what they thought. They ensured me that the sound was "normal", and they demonstrated that a used, 2013 CB1100 on the floor sounded nearly identical. I have found that it sounds louder when the fuel tank is nearly empty, compared to a full tank, and this might be because the empty tank resonates the sound louder. I have 13,000+ miles on the bike now and the pump is still working.