Sosacj21 wrote on 08/26/17 at 12:08:29:not for nothing but that slight bucking your getting at lower cruising speeds was a issue that i had and drove me nuts. as was suggested on another forum post i found a gas station that sold non-ethanol gas and tried a full tank of that. low speed bucking is gone and the after fire/popping in the muffler was lessened.
i had to do a google search for non ethanol fuel stations, the one i buy at now has it marked as "recreational fuel" at about 50cents/gallon more. it runs so much better its worth it.
Cool thanks for that info. I never knew bikes can use Anything other than 91 because that's what I've always been told but I'll definitely start using something different and see how it runs 👍
I've had the same experience here in Australia. Our fuel is not blended by default, but 10% ethanol (E10) is available in some places. I spent ages tuning my carb after re-jetting and the spacer mod. Finally had it running beautifully. Then I stopped at a gas station that sells E10. I filled up with (supposedly) straight fuel. As soon as I left that place the bike felt like all the carb tuning had been undone, I had that surge back. I've been there a couple of times with the same result.
That gas station is really convenient because it's on the way out of town, but I never use it. I now keep a fuel can at home, with fuel I know is good, and I just fill up before I go.