Need urgent assistance!!

[newbie1993]

I am at a loss. I just reassembled my bike after a much needed carb cleaning. So after that I started her up and immediately the rpms go insane. I turned choke off, adjusted the idle screw and nothing. It actually got louder. Then it calmed down to normal idle for literally a second and went insane again. I shut her off and then fuel starts pouring from the airbox drain hose. I have no idea what's going on and it's extremely frustrating

[NYNJ8]

If adjusting the choke lever did nothing, it's possible you did not correctly re-install the choke cable.  Fuel from the drain hose is a symptom of the float needle not fully closing.  Best thing is to take down the carbs again and check the choke cable, float needle seat.  Did you do a full cleaning or just clean the float bowls?  Lots of small o-rings that could be lost if you were not careful during re-assembly.

[newbie1993]

Could the needle seat o-ring be causing this?  And what do I need to do to get the float needle to close fully?  I reinstalled the choke cable the same way I always do. I didnt do nothing completely. Closing the choke only lowered the rpm slightly. But its like they had a mind of their own

[Dr.McNinja]

I am at a loss. I just reassembled my bike after a much needed carb cleaning. So after that I started her up and immediately the rpms go insane. I turned choke off, adjusted the idle screw and nothing. It actually got louder. Then it calmed down to normal idle for literally a second and went insane again. I shut her off and then fuel starts pouring from the airbox drain hose. I have no idea what's going on and it's extremely frustrating

Fuel pouring from the airbox is almost universally a screwed up float needle. Replace that first. Especially if you cleaned the carbs and forgot some o-rings.

Next, double check your float height.

Next, check your boots and vacuum lines.

Next, check choke and throttle cable operation and insure nothing is getting stuck.

After that, make sure you rebalance your carbs after cleaning them. Surging idles is something I notice every time I clean my carbs.

[newbie1993]

Float needle is brand new, I don't know how to adjust float height properly, boots are alright, no vacuum leak, choke cable will be checked tomorrow. And I don't know what you mean by balance my carbs, do you mean sync them?
And I used the clear tube method and my floats were too high on both sides.
I screwed the air/fuel mixture screw out 2.5 times, was that wrong?

[Dr.McNinja]

Float needle is brand new, I don't know how to adjust float height properly, boots are alright, no vacuum leak, choke cable will be checked tomorrow. And I don't know what you mean by balance my carbs, do you mean sync them?
And I used the clear tube method and my floats were too high on both sides.
I screwed the air/fuel mixture screw out 2.5 times, was that wrong?

Do yourself a favor and spend $30 on a harbor freight synchronizer. The tube method is a joke. I doubt you synced them totally right.

Float need being brand new doesn't mean its not seated, or the o-ring isn't screwed up.

Adjusting float height is as simple as bending the tab on the float according to the height in your shop manual. You bought one right? If you didn't, buy the Hayne's manual before you tear into your bike again.

I'm not sure why you would have to adjust your AFR if you just cleaned the carbs. That's generally reserved for rejetting and adding higher flow filters. Turn it back to stock. If your AFR is too high the bike will surge as well.

[newbie1993]

Do you possibly know the size of the needle seat o ring and if it is something I could pick up at an auto parts store?

[newbie1993]

I need to know why when I start my bike rpms are out of control

[bombsquad83]

If you measured the gas level in the bowls and it was coming up past the float bowl gasket, then your float needle valves are not sealing.  Did you buy new K&L float needle valves, or OEM.  I never had good luck with the K&L float needle valves.  Could never get them to seal like they should.  New OEM float needle valve sets solved the issue, with some float height adjustment since I had been screwing around with that too.

Solve this problem first, then we can figure out if there is something else going on.  The carb sync shouldn't cause what you are seeing unless it's way out.  Verifying the gas level in the bowls with the clear tube is by far the best method for verifying if your floats are sealing properly at the right gas level.

[newbie1993]

Yes gas was coming out of the hose connected to the top vent on the carbs and out of the drain tube on the air box. I got the float needle o rings when I bought a jet kit from The Buddha

[bombsquad83]

Just new O-rings, or new float needles and seats as well?  Maybe he'll be around to weigh in, but are you sure that's what the O-rings he sent you were for?  To be clear, the only o-ring associated with the needle valve sets is the one that goes on the base of the valve seat.  You should be able to tell if that o-ring is fitting snugly into the carb and sealing.  If the valve seat falls out easily when turned upside down after being put in, then it's not the right o-ring.

[newbie1993]

New jets ( pilot and main). I cant remember if he also sent needles and seats but if not I bought them from bikebandit. That's where I get all oem parts, crap I probably put the wrong rings in.  They didn't give me any issues until now though so I figured they were the right ones but upon further inspection they are worn out and were not fitting snug. Time for replacement. Don't really have time to wait for the shipping of a couple o rings. Any suggestions on where to buy some locally?

[Dr.McNinja]

New jets ( pilot and main). I cant remember if he also sent needles and seats but if not I bought them from bikebandit. That's where I get all oem parts, crap I probably put the wrong rings in.  They didn't give me any issues until now though so I figured they were the right ones but upon further inspection they are worn out and were not fitting snug. Time for replacement. Don't really have time to wait for the shipping of a couple o rings. Any suggestions on where to buy some locally?

Harbor freight has an O-ring set for something like $8.00. Buy one. Even if you don't use it for this you will need it inevitably. I replaced all my stuff with K&L from ebay for about $17/carb and it works fine. Make sure to replace everything with what comes in the rebuild kit, otherwise you could get problems (ask me how I know).

I need to know why when I start my bike rpms are out of control

If your carbs weren't synced right and you have no vacuum issues it's likely syncing. Follow my advice.

[newbie1993]

The only thing on my carbs not good are the needle seat o rings.   Apparently I used the wrong ones. Everything else is new from a recent rebuild. Sadly it didn't come with instructions and that's how I got in this mess