1996 CB750Carb issues

[picordaro]

I have a customized cb750 nighthawk and just rebuilt the carbs because of a stuck float issue. The carbs preformed perfectly for a couple weeks, and today I ran out of gas and pushed the bike 3 miles to get gas. Once I got it started the same issue with fuel pouring out of the overflow at the bottom of the float bowls happened. I really don't get it. After the rebuild they were fine. I run out of gas and it's overflowing again.

Please - any ideas? It has new floats, clean jets, everything. Why when it runs out of gas the problem comes back? I can't figure it out...

 

[brettp]

Sometimes you can simply rap against the bowls to get the float needle to seat. I've had the same issue when a
draining the bowls and refilling them. I've had pretty good luck filling them slowly. Let in some fuel, stop the fuel, let in some, stop. It shouldn't help, but I've had luck with that process.

 

[picordaro]

will give that a try. thanks