When I had to install a new pistona nd bore my blazer out, I got .20 over.I had allways run 89 octane gas, and once I got my Wiseco installed I run 89 for a few tanks, then 89 octane jumped to $1.89 a gallon.So I went to 87.It was the first time I had run 87 since I had it, except for a few times when I ahd to fill up at a friends.Well I'm babbling, so let me get to the point.Since I started runing 87 octane, my 4-wheeler wont start for anything sometimes.Then sometimes it will start the first try.I dont know if the octane has anything to do with this, just kind of asking if this could be the problem...