Originally Posted by trickster
Yep, mine's the same. I could hear it before my airbox came off though. It started doing it when I was out west last year and happened after my bike was running terribly. The bike quit running rough after I changed a very dirty air filter, except for intermittently, and given the condition of my fuel pump filters as I saw in my recent fixes to the bike, I can see why it ran rough sometimes. But the high pitched rattle is still there.