Bad Engine Noise After Wheelies

Panda Jazz · 07-14-2008, 5:26 AM

Hey Guys,

Desperately need some help. Went out last night and took my medicine (20 minutes of wheelies on my 1998 CBR 600 F3). After the last one (didnt come down to hard), I am now getting a hollow metallic sound from the tank/air box area when I get into the 6-10k RPM range. It almost like there is a hole in the exhaust pipe, but there is not. I took the fuel tank off and the fuel breather tube was missing....replaced it and still the same problem. I cant find any disconnected hoses. I did not open up the airbox. I had a similar issue on my 1998 GSXR 750 and found a disconnected hose under the fuel tank (super easy fix), but this is not as easy. Any help would make you an awesome person. Thanks guys and ride on.

Drew

kiai · 07-14-2008, 5:45 AM

you sure you haven't lost oneof the rubber pieces put between the tank and frame ?

Panda Jazz · 07-14-2008, 5:55 AM

its not a rubber grommet issue...I checked that. Thanks for the suggestion though.

.OrgOwner · 07-14-2008, 6:04 AM

Have a read of the site rules.

johnyquest · 07-14-2008, 7:15 PM

It's probably your cam chain tensioner. They rattle on these f3's. Especially if you think it's coming from the motor itself. Listen to the cam chain side at idle and rev it gently... If you hear that rattle and it's similar, that's your answer.

DUX · 07-14-2008, 8:24 PM

Check the throttle actuator.

If that's bad, you're screwed and there's no hope. Might as well sell the bike.

Panda Jazz · 07-18-2008, 5:54 AM

thank you guys so much for the help. I found my front sprocket chain guard had a loose bolt and my exhaust is not connected to the frame (and looks like it needs to be bent in order to do be - so i think this is not the issue). I will have everything back together for a test tomorrow. I will feel like a jackass if it was a loose plastic sprocket guard but I will let you all know either way....thanks again and if you have any other suggestions, please send. Ive got all the plastic off of my baby so its a good time for whatever. Thanks again to all of you.

Drew

Red Rider · 07-18-2008, 9:15 AM

Quote:

Originally Posted by Panda Jazz

....thanks again and if you have any other suggestions, please send.

Drew

Just one...quit doing wheelies.

Panda Jazz · 07-18-2008, 9:34 AM

tried...didnt work

slickwill · 07-18-2008, 9:48 AM

Quote:

Originally Posted by Panda Jazz

tried...didnt work

Make sure you keep it off the street then. Here are the rules you agreed to when you registered that .Org referred you to above.

Quote:

We have no tolerance for street stunters, street racers, or anyone else who gives motorcyclists a bad image. There are proper places for that type of thing, and a public street isn't one of them. Posting material which could reasonably be construed as celebrating or defending these types of activities will cause you to be flamed, and will probably cause you to be banned. Further, even if done in a controlled environment, FireBlades.org is not the place to discuss stunting tips, tricks, or techniques. There are plenty of other sites that cater to stunting, so please take those types of discussions elsewhere.
And most importantly, we reserve the right to refuse service to any person, at any time, for any reason.

DukeCBR2008 · 07-18-2008, 10:31 AM

wheelies belong on closed roads or tracks, guys.

Twincam · 07-18-2008, 10:36 AM

And defiantly not on here...