1982 gs550l Carb tuning

[Thelen82gs550l]

So as usual bike was old bought it for 300 bucks not expection much have gone though everything on the intake new gaskets o-rings everyting. I have cleaned and sync'd the carbs. It runs good on three cylinders then four when I get to about 2 grand or a little higher. And then when I come off of it to a stop she sits at 2 grand for a moment then goes back down to three cylinders and back to 1000 she will pop every once in a while. If I use the choke she fires on all four gets up to about 3500 but the moment it take it off it loses the cylinder again and it will pop on and off again. Its starting to get cold in wisconsin and I want to get my summer project done so i can ride in spring. Any help would be greatly apprecated.
I guess I am just wondering if this might be a idle skrew problem? If I need to try and reset them I think the spec is like 1 and a half out but dont quote me on that.

[gearhead13]

I dont know. The 'spec' on my idle screws is 3 turns but it runs and atarts a lot better at 1 1/2, so don't take those specs as set in stone.

[GSJim69]

Sounds like you are not getting fuel at low RPM. I would suspect pilot jet or idle circuit.
I would pull the carb and make sure that all the passages are clear. If I didn't find any thing obvious I would re-dip the carb.

[Thelen82gs550l]

I found out that 3 1/2 was the spec solved some problems but she doesnt hit on that one cylinder tell i hit 2 grand or so.

[Thelen82gs550l]

Holy cow if you have a question about how a bs32ss Carb this page will help you for sure thanks to bassclif couldnt even believe it this will for sure help me in my diagnosis!!

http://members.dslextreme.com/users/bikecliff/images/BS32SS_Carbs.pdf

[Nessism]

As jweb said, sounds like a pilot jet is pluged. Did you take them out and hold the jet up to a light to make sure the orifice was open? Also, if your tank is full of crud, it will plug the pilots pretty quickly - make sure the tank is clean.

Good luck.

[Thelen82gs550l]

I will get on that next weekend. would now but its getting pretty cold out