Honda CBR 250 Forum banner
Cancel

Noise from engine head when accelarating past 6k rpm

985 Views 18 Replies 5 Participants Last post by  Big Cahuna, 
S
So i got a 2013 CBR250r with 52000kms. Recently changed both camshafts and rocker arms, also adjusted the valve clearance. But soon after, this problem arises. Whenever i go past 6k rpm, a metal ticking noise comes which is pretty loud and it goes like Trrrrrrrr. This noise feels like its coming from right under the fuel tank( Where the head is located). It stays there as long as i am above 6k and vanishes as soon as i go below 6k rpm. It happens only when the bike is moving and so i cant really make a video of it. I have searched everywhere on internet but cant find a similar thread. Can anyone help?
Reply
Save
Like
1 - 1 of 19 Posts
Big Cahuna
Probably just cam-chain tensioner not as tight as before.

Worst case, It sounds like the timing is off one tooth. Maybe the valve is lightly tapping the piston because the spring doesn't have enough time to return the valve to the closed position.
Reply
Save
Like
1 - 1 of 19 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Honda CBR 250 Forum
A forum community dedicated to Honda CBR 250 owners and enthusiasts. Come join the discussion about performance, racing, modifications, troubleshooting, maintenance, classifieds, and more!
Full Forum Listing
Explore Our Forums
Honda CBR250 General Discussion CBR250 Problems and Issues New Member Introductions CBR250 Performance CBR250 Parts and Accessories
Top