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misfiring on hot starts

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I'm having a weird problem with my idle when I start the bike after being off for a short time (i.e. fuel stops). It starts great first thing in the morning, and idles just fine after warming up, but if I stop for a couple of minutes, it misses on one cylinder for about 30 seconds at idle. The missing cylinder seems to pick up if the engine is revved, but drops out again at idle. Then it settles down and everything is fine. It seems to do it reguardless of engine temp. Plugs look good and have about 2000 miles on them. Any thoughts?
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Discussion Starter · #4 ·
Thanks for the tips, I've been leaning toward a vacuum or fuel problem, and I know I'm due for a balance and tps adjustment. It occurred to me last night though, that it could very well be my battery. Is it possible that my battery is getting weak enough (as far as I know it's seven years old) that it starts the bike okay on the first try, but if stopped before it gets a chance to charge fully it draws down enough on the second start to cause the alternator to sag, thereby freaking out the ecu or preventing the coils from saturating properly?
 

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Discussion Starter · #6 ·
I installed a new battery a couple of day ago (decided it was time reguardless of whether it was the source of the problem), and it made it much better but didn't cure it completely. This evening I stopped for gas after about a half hour of riding, so the bike was good and warm. I started it back up and it stumbled for a few seconds then settled out. And with the new battery I can reliably restart it if it dies. So the problem isn't fixed, but it has been reduced to a manageable level. I've begun compiling notes from previous posts on tps and tb adjustments (gotta love those archives) and will give that a try when I get a chance.
 
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