i was riding home for work yesterday and my bike felt really under powered i could still get up to a normal top speed but getting there felt a lot more slower and the bike just was not as responsive as usual and when you listen to the engine there is a funny like rattling nose (like theres a bolt lose) when you get in to high rpm even when it's just revving not in gear i have had a quick look over the bike to see if there was any lose nuts or any thing that could be making the nose has any one had the same problem and know how to sort it out please ??? thanks
It could be fuel, is it engine pinning? Maybe some bad fuel or you accidently went for too low an octane fuel. Might also be a bit of fuel starvation as well.
pull your spark plug out and check....should be light brown at the center if its whitish..your way too lean if there is any metallic or silver residue on the plug then its gotten way too hot.....air leak...or other trouble
thanks for all the reply i shall have a good look at all them possibilities asap my dad suspected it might be an air leak but as of yet we do not know. thanks
