Idling problem after rebuild

[mjpauckert]

Yesterday I cleaned my carbs and replaced the worn out orings on the needle jets and the air screws. While I had them apart I checked the float height. Now I read that the float height on my carbs should be +/- 23mm. Before I adjusted them they were at 20mm. I did this because my oil smelled like gas and I heard that was due to the floats not being adjusted correctly.
I put em back together and adjusted the air screws to 2.5 out (rookie mistake; didn't check to see where they were set to before I tore apart my carbs, but i think thats what your supposed to set em at).
When I fired up my bike It Idled fine at first then climbed to 37-4,000rpm. Turned It off adjusted the Idle screw. Same thing.. oh yeah and it won't start unless the choke is all the way on.

[tom203]

Beware, you will get many replies. There are alot more things that need replacing than just the o-rings on needle jets and air screws! You have intake air leaks. Search these forums and you will quickly discover the stuff you overlooked in your carb teardown.

[gearhead13]

Have you seen these?

http://www.mtsac.edu/~cliff/storage/gs/mc_maint/GS_CV_Carb_Cleaning_Series.pdf

http://members.dslextreme.com/users/bikecliff/

There is a downloadable manual for you bike there i think

[gearhead13]

Did you do a proper cleaning of the carbs including dipping them? Did you bench sync them? Where you measure on the floats for height matters a lot, the manual should tell you where to measure. I should be on the carb with no gasket and on the lower part of the float IIRC.

[joseleary]

Did you do a proper cleaning of the carbs including dipping them? Did you bench sync them? Where you measure on the floats for height matters a lot, the manual should tell you where to measure. I should be on the carb with no gasket and on the lower part of the float IIRC.

i keep reading about people doing a "bench sync" and I'd love to know what that means and how to do it since I'm a few steps away from putting my newly rebuilt carbs back on my 82 850gl.