I have a 2011 700 that has a very noisy fuel pump. Like a loud whine noise to it. Went riding on the wknd and on the way home it started sputtering and backfiring. Checked for codes and nothing comes up. Wondering if the pump finally gave up. I have searched and found lots of noisy pump issues but none that said the bike wasn't running right because of it. Anybody had this issue before?