Carb problem or petcock

[odin1]

Instead of high jacking someone else's post I'll just start my own.

I recently experienced a spike in gas flow while riding my 85' Katana one day last week. I had the bike up around 170km @ about 9500 rpm. When I came to a stop the idle stayed at 4000rpm. To continue my ride I had to lower the idle screw. Since then the bike doesn't ride right. It still feels like its sucking in too much gas. Earlier this year I had a new petcock installed as well as valve adjustment due to new gaskets install. Could this be related to the problem? Guys at work tell me it could be a stuck float or dirty carbs. I don't really believe in mechanic in a can so I'll probably take it to the shop this week. I just wanted to see if anyone else experienced something like this. Help me ease my mind.

Any help would be appreciated.

[bccap]

I don't think the petcock is the problem from the way you describe the symptoms. However it is easy enough to check. With the bike not running and the petcock in the center position or reserve. Pull off the fuel line. If fuel is leaking out you have a problem. Also check your oil sight glass and smell the oil. If you smell gas or the tank is overfilled you probably have gas in the oil and your petcock has failed. Do NOT run the bike if this is the case.
Your problem is probably with the carbs and there are loads of experts on this site who will be along shortly to help you with that.

[koolaid_kid]

I would also check for an intake leak. Pretty easy to do.