Im pretty new to the cbr clan being that i just bought mine about 2 weeks ago. I have a simple question for my f4i 2004. The little red f1 light wont go off. What is the f1 light? Is it bad if it wont go off? What should I do?

 

the FI light is the fuel injection light it should turn off after you turn the key on and it primes the system, you might want to get it looked at if it wont go off

 

Do a search on how to retrieve the error codes. The light is on cause something ain't right. Could be as simple as a sensor being unhooked.

 

alright thanks man. do you know where i can find the sensor? i want to check to see if thats it. The bike runs fine and everything so I dont think it will be a big problem

 

D/L the manual. There's a couple of em. One is on the airbox on the bottom side. Not sure about any others.

 

thanks alot for all the help. Now since im new I dont know if this is normal but alot of the time my bike doesnt really wnt to accelerate until i hit like 4 rpms. it will accerlerate but not like it does after 4 rpms. Is this normal? Or would that be one of the reasons the fi light is on?

 

My FI light will come on every once in a while and stay on for a hour or so. sometimes it will go away if i shut off and restart. I think things like pinched hoses can screw with it. Did you recently work on it at all?

 

theres definitely something wrong with your bike if it won't go until 4k rpms.

 

like it will go but the reall power kicks in at about 3 or 4 rpms. specially if i dont let it warm up. is that normal?

 

You always want to let your bike warm up at least to 100˚F. Even then, be easy on the throttle until it reaches operating temp. A lot of people fowl their plugs by improper warm up. Just start your bike up and let it run while you put your gear on. I won't ride mine until it reaches 175˚F.
Another thing with the F4i is that the power band doesn't really kick in until about 6K rpm. On the older Yamaha R6 it wouldn't come in until about 8K. Nonetheless, it's my understanding that the F4i has good bottom end torque. Try giving it a little more juice on take off, and don't ride the clutch.
As far as the Fi light, as stated above, download the manual, you'll need it anyways (very useful).