So I'm riding in the rain this morning and all of a sudden I feel that sputtering like when you run out of fuel. Quickly switched to reserve automatically and looked at my odo - only 30-and-change miles... WTF? Sputtering doesn't quit, in fact starts to die quicker every time I give it throttle - pull off to the side of the highway real quick as it dies. Let it sit a second and hit the ignition - thinking water made a short somewhere but it cranked right up - still sounding horribly fuel-starved. Open the gas cap and peek in just in case...yup sure enough it's full, but here's the weird part. As soon as I take off the gas cap, the sputtering quits and the engine revs back up to purring normally.
WTF???