Yesterday here in Northern CA we had a nice day, so a buddy and I headed off to some local twisties for some spirited riding.  Firstly, this is the first time I've had the GS out for this type of ride, and I was quite impressed with the way these bikes handle!  
Now here's the problem.  After zipping around, our route took us onto the Interstate.  I was running in 6th gear about 7500 RPM or so when all the sudden I lost power.  The bike died and on it's way down was acting like it had no fuel.  I did the obvious...switched it to reserve as I was slowing down on the shoulder, once stopped checked the tank and there was plenty of fuel, scratched my head in disbelief   :dunno: ...after putting the tank back to "ON" I attpempted to re-fire and after a couple of a attempts it fired right up and ran like nothing was wrong...for about 1/2 mile.    Again I pulled to the shoulder and this time let the bike sit for a minute or two.  I refired it and it again ran like there was nothing wrong.  After all of that I could not get the bike to replicate the issue the entire ride home.  I even rode into work at my second job (I manage a nightclub for those who just asked themselves) last night and it ran fine.
So I'm pretty sure its a fuel delivery issue...I'm guessing something in the carbs or fuel line???
Any ideas, suggestions are always welcome.  Thanks!

Lane    

I had a similar problem last summer. First check the fuel lines. Mine where cracked. Also check to see if there is any rust in the tank. I had rust in my tank and it was clogging up my carbs. I took care of the lines and tank and have had no problems. Good luck.  

A lot of people have reported problems with the stock petcock flowing enough fuel in the "on" position for extended high RPM use.  Sounds like this could be your problem.  One solution is to run the bike on "prime" and see if that cures it.  On my race bike I went with a Pingle petcock and have had no probles with fuel starvation.  Hope this helps.

Rich

You should buy Kevin C's Pingel petcock (see for sale section) and then just run one line from the carbs to the tank.  Much simpler and no more fuel starvation problems.  


Adam