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View Full Version : Bike wont rev high and it has a rattle sound



Sutage
26th February 2006, 13:33
Hm bike fell over in carpark, only handle bars hit as far as im aware of but it wont rev past 10 easily so i dont take it past it
wondering whats causing this?
when the bikes idling there is a rattling sound, more of a rattle than a tick
anyone have any idea whats up?
bike is 88 fizzer250

MSTRS
26th February 2006, 13:40
Is your bike the Exup model & could the valve be broken?

Sutage
26th February 2006, 14:00
nah man, its not exup so def not that
i been reading on fzr250.com it says maybe cam belt?

Coyote
26th February 2006, 14:11
Sure FZR250s have cam belts? Most 250 sportbikes don't, which is why they can rev so hard from what I know

MSTRS
26th February 2006, 14:13
Falling over shouldn't affect that. Perhaps you are only now noticing it as part of concern after it's topple??

chickenfunkstar
26th February 2006, 14:24
Could you have banged the airbox out of place?

Sutage
26th February 2006, 14:46
nah man i usually take it way past 10 and now it just wont go there
thats prob the problem.. ;)
i checked the airbox seems alright, gonna take it apart soon
any other things i can check?

mini_me
26th February 2006, 15:15
does it run on all four cylinders all the time
if not then maybe you could have bumped a lead or maybe damaged a coil
do a spark test on each cylinder and see what happens
m/m

FlyingDutchMan
26th February 2006, 16:40
A vacuum slider may have become stuck - if you take the airbox off you should be able to see them. Check that they all move in and out freely.

marty
26th February 2006, 16:42
sounds like something has come loose in the exhaust/muffler, dropped across the main pipe, and is not allowing a free exhaust flow at higher rpm.

Bonez
26th February 2006, 18:56
How long did it spend "resting" in the carpark?

Sutage
28th February 2006, 18:05
i picked it up immideately(sp)
hm i live out west auckland new lynn/green bay area if anyone could come have a look
losing speed drastically ! dont want it to get major :( poor bike

Sutage
1st March 2006, 20:19
hm just taken off airbox seems fine as far as i can see
how does exhaust come off:/

FlyingDutchMan
2nd March 2006, 17:42
hm just taken off airbox seems fine as far as i can see
how does exhaust come off:/

Have you push the vacuum sliders up? Do they drop back down by them selves?

marty
2nd March 2006, 18:39
might be 1 piece fom the headers. try banging the side of it with your hand - is there a rattle?

Sutage
2nd March 2006, 22:22
Have you push the vacuum sliders up? Do they drop back down by them selves?

If you mean the rubber things yea, when bikes running it makes mean sucking noise so i think carb shit is all good