98 900rr sounds like its running on 3 cylinders. put in new sparkplugs with no change. when it gets higher up in the rpms it runs fine but if i'm not on the throttle its back to 3 cylinders. Any ideas?

 

My ZX7R did that for awhile until i put new gas in it. THen it was fine. But that sounds ghetto and is annoying as hell to ride on. Oh well it might be something as simple as bad gas or something like the timing is off so 1 might be misfiring but im not sure man.

 

tried the new gas thing; no good

 

Mine was doing that there for awhile, it's bogs at a lower RPM? I changed the plugs and **** too but didnt help. Actually it was doing it due to the fuel filter, my 98 doesnt have an intank fuel filter like it should so due to a dirty fuel filter and to long of hose I had the same problem you had....

 

That makes sense man. Thats what i was trying to get at make sure nothing is clogged and your feul filter is ok.

 

Carbs could already be plugged/gummed up. Try some gas treatment that you just add when you fill up. If that doesn't work I'd say pull the carbs and check your jets

 

Had a similar problem with my VTR last year... tried everything from gas, pump, filter, carbs, to plugs... no luck. After a few weeks of , found out that it was one of the coils... got a new one and she ran fine after that.

Just my experience..

 

That's the wonderful thing about bikes........it could be one thing, or another. Just gotta trouble-shoot until you find it. My guess is since it runs when he has it on a higher throttle setting is the low-speed jets are clogged. This can happen obviously with the gummed up old gas or just dirt in the system. Good Luck

 

clogged jets might make sence considering that i found a squirll nest sitting on top of my air filter. some of the filter was eatin away maybe some **** got through.

 

HAHAHA!! ****in rodents man!! well that might have something to do with it. You might have a Acorn in it huh??

 

get ta pullin the carbs and traps for the squirrels.....

Its amazing the saquorrel tolerated the smell from the filter oil and other fumes....

 

cleaned the carbs; no good. coil sounds about right cause when it first started happinin it would run fine when it was cool but once the coils started to heat up it would go to ****, had the same problem on my 250R thanks for the help

 

on behalf of everyone,

no problem...