I was out riding with a friend yesterday. I was chasing his 2016 BMW with my 2016 SESG. It was all fun and games until we stopped for lunch after filling up in Marlington, WV. I guess we were stopped for an hour when I started up my SESG and it sounded awful. Spitting and sputtering. I shut it off and started again. Same thing. Hardly enough power to even get the bike moving forward without stalling out. I went a couple miles down the road to see if it cleared-up. If I rolled the throttle past 1/3 way, it would sound loud but loose all power. Spit and sputter. Under 2K RPM and it would spit and sputter. Turned it around and went back to the gas station. Looked it over and couldn't see anything obvious, like a wire disconnected. I re-seated the spark plug wires. Pulled the main fuse for a few seconds. No improvement. I thought it was possible I had some bad gas, do I purchased some fuel additive to remove water and boost the octane. No improvement. Decided to try and run it a few miles down the road, to see if it cleared-up. It would run horrible up to about 3K rpm, then clear up and give me a giant kick in the rear as it took off, and then when I shifted and the RPM fell below 3K again, I couldn't make it up the smallest of hills and it would spit and sputter. The lurching action made it difficult to ride through curves in rural west virginia. I had no phone service and the bike was barely rideable. I wound up limping it home. Stopped several times, hoping it would clear up. I don't know if something clogged the injector or what. I'll be taking it to the dealer, as it's only six weeks off the dealer floor and under warranty. Has about 4K miles on it. Thinking back, there was one other time I had a rough idle issue at starting. I was somewhere in the midwest and it did the rough idle pop and lurch thing at starting up after a food/fuel stop. It cleared up fairly quick, so I didn't think much of it. No engine light, so I'm thinking no codes were thrown. Really odd. It runs like the old school carb cars did when it had a big vacuum leak in the intake.
I'm wondering if anyone else has had a similar issue happen to them, and what was discovered as the issue? I'm thinking of draining the remaining gas (about 1/3 tank left of that last fill-up in Marlington) and filling with pure gas, to see if it helps. The dealer I purchased the bike from is closed on Monday's, so I thought I might futz around with it tonight. Any suggestions or thoughts are welcome, as I'm stumped.