Carb help, 81' 250t

[seabee]

I notice when i pull the plugs, one cylinder is carboned up and rich, the other cylinder is lean, no carbon what so ever. My 81' 32mm Mikuni carbs. Would this be a needle jet problem? If so, how would i go about adjusting it? Carbs have been thoroughly cleaned, but ive never touched the needle jets. As far as performance, i am running K&N filters, but completely stock exhaust. Any help would be greatly appreciated!

Thanks

[tom203]

You might have a petcock problem- which carb/cylinder has the petcock vacuum line attached to it? the richer one?

.... or just dirty carbs- unfortunately, the carbs need to be completely disassembled to do the job properly and that means you have to touch the needle jets.


have you see this link?

http://members.dslextreme.com/users/bikecliff/images/GSR_Greeting.html

[seabee]

petcock

The vac line is drawing off the right carb, its also the right cyl. thats running
rich.
The petcock would flood the left carb. so i wound up putting an on-off valve
between the petcock and carbs
I did open the petcock and nothing seems to be wrong with it.
I will check out the rest of the carbs asap

[Nessism]

Did you rejet the carbs when switching to the pod air filters? If not, you should as the jetting is drastically different now.

[BassCliff]

Hi,

The vac line is drawing off the right carb, its also the right cyl. thats running
rich.

It is common for a failing petcock to leak gas back down the vacuum hose into the cylinder. Are there gas droplets/vapor in the vacuum line? If you suck on the vacuum line like a straw do you taste gas?


Thank you for your indulgence,

BassCliff

[Woodsy]

my 250 was running bs30ss carbs on it, didnt think the 32's came in till you hit 450cc?