When my motor is running kinda sounds like a sewing machine from the back right hand side of motor has proper oil level now odometer shows 9,127 miles on it it's a 93 1100st I just got it plastic is kinda rough has a new back tire I did see the old one pro had taken off burned down to the cords I am sure they were doing a lot of burn outs could sound be valve out of adjustment or timing chain maybe ? I'm also on the hunt for the mirror for both sides with blinker as both mine are broke off