Hey guys. I have a 94 cbr f2. Recently took apart and cleaned carbs and put back exactly how they were. Started the bike today and it will idle fine but when i try to give it some throttle it stalls. Any reccomendations? Idle rpms are fine and by the looks of the exhaust smoke its not running rich or lean. But maybe im wrong.

 

double check all your vacuum lines.

im not a carb expert but im thinking your idle jet is good and the main jet is prob not flowing enough fuel. i really dont know anything about the F2 but this is what im thinking with my basic carb knowledge. With the air box off, reach into each carb and make sure the needles are able to move up and down freely. Start the bike, look into each carb. while looking at the needles, see if you can very slightly rev the engine (do your best to not kill the engine). You should see the needles move up when you do this.

what about the choke? does this appear to be working ok? the choke (i believe) has a different fuel source than the main jet so if the reving thing doesn't work, try using 1/4 or 1/2 choke and try the rev thing again. keep in mind, when i say "rev" all i mean is 2 or 3K rpms.

 

Well thanks for the input. I appreciate it. I worked on the bike all last week and got fed up with it so I sent it to the shop haha ill let you know what the problem was when i get it back

 

you can not tell is a motor is running rich or lean by looking at the exhaust smoke( I mean you can if it's grossly rich). You need to do a plug check.

If the bike was running fine prior to dissemble, you could only have put it together incorrectly or damaged something in that process. Carburetors are fairly basic... tuning them correctly is not.

we need a bit more information, the motor could be dying from fuel dump or from leaning out because of fuel starvation.

 

Sounds like a vac leak, check the boots on the carbs, people overtighten and undertighten them all the time with the same result which is similar to what you're describing.