So, I have my 1997 F3.* It sat at my buddy's house in California for about 9 months with old gas in the carbs.* I finally was able to have it shipped out here to me in Louisiana because I wanted to start using it as a track bike.
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Ive had nothing but problems ever since I got it down here.* As soon as I rolled it off the truck getting it here, it would crank but not fire.* I took it to my local shop and they said they couldnt do anything with it, so the same day I take it home, put a new battery, new 93 oct gas with some seafoam in it.* After cranking it for a while, and messing with the idle adjust, I finally got it to fire up.* I took it for a ride, prob about 20-30 minutes of stop and go and highway riding.* As soon as I get it a block from my house it starts to sputter and die.* Now it wont fire up again, so I let it sit for a couple days and finally decide to take it back to the shop for another go.* The day I take it back to the shop, I get it to fire up, but it starts spewing fuel out of the overflow line.* So, take it to the shop and it sits for a few days before they get to it and when they do...it fires right up for them and no leaking fuel.* So they call me and I tell them to go ahead and do whatever they need to do, money is no option, I just want it to run right.* They call me a week later after changing out the spark plugs, telling me its good to go.
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Ride it home from the shop, no problems.* A week later, go take it for a short 5 minute ride, and it sputters and dies as soon as I get it in the driveway.

So far, the guys at my local shop said the carbs were clean and filter was fine.

Any input please.

 

Look into the fuel pump. Seems like it's given everyone with an F3 hell at some point. Can be intermittent. Set up a gravity feed direct to the carbs from the tank and see if the bike fires. Make sure you are getting fuel, spark, and air.