problem with bike, loss of power

[mike93hatch]

Originally Posted by earz

i think i have one if you ever need to borrow it - if I can find it



like what?? details...

theyre both making noises throughout the revs..i didnt hear my friends bike but he said its blown.. i listened to my brothers and i cant tell what the noise is..kinda like the noise a bad CCT makes but does it all the time.. the bike runs fine though. a quick google search and it seems like this noise is a common f4i issue. but still no clue what it is. it doesnt sound good i know that. its not bearings or anything like that..

[earz]

I'd start with a manual CCT then check valve clearances, but without hearing it, it's hard to say.