[Oops2low]

Hey guys,
i got a few problems with my 900RR. First off, the bike makes a tapping noise which i've heard is either the valves or chain? any ideas how much that costs to adjust?
also the front brakes are pulsating under semi hard braking sort of like it loses grip and then grips and loses grip etc im thinking warped discs?
bike has around 15k miles, checked the oil level and the window was full.
any help is appreciated :crying:

 

[bladeracer]

also the front brakes are pulsating under semi hard braking sort of like it loses grip and then grips and loses grip etc im thinking warped discs?

Lift the front and spin the wheel.
You should hear if either disc is warped or bent.
If bent you can straighten them.
If they're warped you probably need to replace them.

 

[cbr900racer77]

Is the tapping noise consistent with engine rpm? (gets faster as rpm's rise). Is there any point where the tapping stops? (ie...pull clutch in, certain rpm range, etc.)

 

[Oops2low]

well for example i can hear it clearly when just blipping the throttle quickly and not very high like maybe 2000 rpms,sounds like the chain making loud noise. when riding i can hear it only when at low rpms.
it also feels like it sort of needs more throttle to get going also.