hissing carbs?

[paXhcXnc]

Ok check it out. I rejetted my carbs with the cobra kit, did the bean box mod, everything was gravy. Now there is a hissing sound coming from my carbs. Everythings seems like it's in order but I got some backfiring going on. I really don't wanna take out the carbs again, but i will if I know the problem. I hate paying people to shit for me if I can do it myself. I have been riding kinda hard. Help me shadow gods!
Thanks

[M@Man]

Sounds to me like you just have a hose that's not connected, which would cause the backfire and your hissing sound. Just double check things under the tank, you shouldn't have to pull the carbs out again to fix that.

M@

[navillustoo]

That hissing sound is most likely a large vacuum leak, not just a small vacuum line not reconnected. Check to be sure you have the intake boots properly seated. If they are not fully seated, they won't seal off no matter how tight you get the clamps. This is the cause of your backfiring, a very lean A/F mixture.

Brian