have a 1998 honda cbr f3. Allways ran kinda crappy and today it got really bad. it was running on 3 cylinders so i put all new spark plugs in and checked my spark. Still the left cylinder while sitting on it was doing nothing.Pulled the plug and wasnt a drop of fuel on it. cleaned the carbs the best i could and made sure the fuel pump was pumping and still nothing. Any help before i bring it in tomorrow?

 

check that plug for spark sounds like maybe one of the coils have a bad side\

 

Might have a stuck float. Even with no spark you should have wet plug. I would take airfilter off too look into carbs while cranking to see if I'm get gas down cyl. Might help..

 

I will give that a try. Seems like it isn't getting any fuel to that cylinder.I switched the plug wire around and still no luck on the cylinder.Any other thing I can check are do?

 

Have you confirmed you have spark on that cyl. ? If yes then you are not getting fuel to it . When you start , run it then stop and unscrew float bowl drain screw on bad cyl and see if fuel comes out. That way you can see if you're getting fuel go it.

 

I do have spark on that piston.so if there's no fuel going to that carb what do I do next?

 

If you get no fuel from drain, try tapping float bowl with plastic handle of screwdriver. This may work, may be temp fix . May have to clean carbs.

 

Has the bike been sitting?

 

Sat all winter.I drained the old gas and ran new gas with some seafoam.it ran good untill last week.

 

any updates on this?