ok guys im new to cbr's ,600s and this site so here i go i just bought me a 93 cbr f2 and the person i bought it from said it sat for a year so i rode it the second day i had it and it wouldnt go over like 50 felt like it was runnin out of gas or something. So i took it to my uncle and had him check somethings for me he said he checked the plugs ,wires, oil and took the carbs off cleaned and sinked them.so i took it out again ran fine for a day. took it out the next day for a few ran good most of the day until i went home it started acting up again kinda feels like it not having power i was in 4th gear and goin like 65 something felt weird so i gave it full throttle and it didnt want to go i kept thinkin i might be runnin out of gas so i put on the reserve and it didnt seem to help i pulled off and stoped at a gas station opened tank still had a half tank so i turned the gas back to on started it up and left seem to run ok again what should i do i dont want it to die on me or something should i put a fual filter on it or what like i said before im new to the bike dont have much feel for problems yet please help me out. Thanks


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The carbs could be out of sink, although ide think it would act up non stop (not off and on). Did u change thhe plugs/wires? If not do so along with the airfilter, oil and oil filter.

lmk what happens

 

its gotta be some sort of fuel problem. It seems like possibly you have sediment in your gas tank and blocking up the petcock. that would be my guess. I would maybe take off the petcock and zap it with some carb cleaner and give the inside of the tank a good once over.

 

CBR13F2 ... could he just use some seafoam??

 

check under your gas tank you will have a litte hose hanging that is the breathing line of your tank chek that hose for obstructions should be clear, sound like you dont get gas bike would die and a few second would run fine for other few miles chect that

 

I had the same problem last summer. I found out that no air could get into the tank and the motor can only suck a certain vacum in the tank before it can not suck more juice. It needs air into the tank.
I had sucess by opening the tank lid several times and then it was ok. But the real problem was a little rubber kind of vent, in the tank lid. It was hard as a rock due to age, so I removed it. From then I did not have any problems. Please check this out, and I hope it will help you.

 

in your story you said you turned on the reserve and it worked fine...SO leave the researve on!i have the same problem with my bike it feels like it;s goin got die eevn with a full tank of gas,,,,,,,,,,,, weird i know

 

well i have the bike up at my uncles friends shop and they are tellin me it might be the coils or the cdi box im not sure this is pissing me off im just want to ride the damn thing because its finally nice out but check this i rode it up to the shop to day and i ran it at high rpm's to run it hot to see if it would do it again and it did i ran up to about 12000 rpm in 3rd as soon as it hit 12000 rpm's it wouldnt go over it and lost all of its power and it droped down to about 55 mph i really need to figure this out i dont want to buy a bunch of stuff and find out it isnt that ya know i found the parts on ebay for decent prices but i would like to know if it is really it i think im gonna have to just start rippin stuff off and start some where but i wont know if it is fixed or not untill i ride it for awhile which sucks because i could change things out ride it and it still do so i would have to drive around for a few this sucks

o and if any body has upper left faring and left tail fairing in the stock color of my bike with decals for sale cheap hit me up im lookin to try and restore it

Thanks guys

 

i have the cdi box and the coils if interested. i can take paypal
i will check the voltage regulator first before change cdi box

pm