Hi all, I have just bought my first bike a 1993 honda cbr 600 f. the bike is spot on though it seems when I have run it for about half hour or so it develops a rumbling noise from 2000rpm to 3000 rpm. anywere out of this range and its quiet again, any help is appreciated. thanks.

 

Do a search on "engine noise" here...Sounds like it could be tha cam chain tensioner..
RB

 

Hi, thanks very much, I didn't realise so many people had this problem. I now have another one also, it seems my battery is not charging came back today, when I went to restart it it wouldn,t start. it bumped ok though. i will have to check it out tommorow. thanks for your help. I will probably need loads of it as I'm new to biking just passed my test last week.