I was wondering if somebody could help me? I will try to keep this as brief as possible for everyones sake. I own a 2002 Honda CBR600F which has a noticeable rattle between 3,000 and 5,000rpm. I have only noticed it since I changed my helmet from a Shoei to a Index helmet. I am guessing it has always been there, well for the time I own it anyway. It sounds a bit like a loose washer rattle around, so I removed all the fairing and took it for a ride, to no avail, the rattle is still there. It sounds like it is coming from right hand side of the engine.
I did some digging around to the camchain tensioner as CBR's are apparently prone to this problem. I bought a new genuine Honda tensioner from an online part seller, fitted this by the book, but the rattle is still there. You can't hear it on tick over, or if you rev the nuts off it on the sidestand. You only hear it while you're riding and the engine is under load. Shut the throttle and it goes, wind it on gently and its back. Please help me. Is this something I need to worry about or should I just wear earplugs?