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DaBlue1 · January 30th, 2013, 07:06 PM

91 octane will not make a big difference in your bike, it will just burn slower than 87. The Ninja performs well on 87 octane, however I understand your concern about ethanol laden gas. I run ethanol free 87 octane in my bike as much as possible and it runs great. When I can't get e-free gas, I make sure I put Star Tron in it. As long as the bike does not sit for more than a month or so, your fuel and carbs should be OK.

I would also check to make sure that there is nothing blocking the snorkel and have a look inside of the airbox. Lastly make sure that your gas cap makes noise. If it is not whining or whistling, it's probably not venting properly and that can cause a fuel flow problem.

January 30th, 2013, 07:06 PM	#8
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	91 octane will not make a big difference in your bike, it will just burn slower than 87. The Ninja performs well on 87 octane, however I understand your concern about ethanol laden gas. I run ethanol free 87 octane in my bike as much as possible and it runs great. When I can't get e-free gas, I make sure I put Star Tron in it. As long as the bike does not sit for more than a month or so, your fuel and carbs should be OK. I would also check to make sure that there is nothing blocking the snorkel and have a look inside of the airbox. Lastly make sure that your gas cap makes noise. If it is not whining or whistling, it's probably not venting properly and that can cause a fuel flow problem.