Ok quick background, I just put my yd100 on a new frame. Yesterday I rode it to work and no problem, no noise fluctuation, nothing. But when I left it started making this fluctuating noise, that's more noticable at mid range and up. The best analogy to use when describing the noise would be this: imagine a taught wire, guitar string makes more sense, and you pluck it and it starts vibrating but as the energy fades the tone from the string makes almost a warble, rising and falling. It's that. I'm not real familiar with sound wave terms, but if you could see the sound wave they would be short in height but long in length. Im sure someone out here will understand that. Also worth mentioning is I run my mix at 50 to 1, but on this "gas can issue" I'm running seafoam through the system to clean out the cobwebs, I noticed there's still some carbon buildup on top of the piston from when I was running it too rich when I first built it. But this is my second tank of seafoam added gas.
Any help or ideas would be appreciated.
Any help or ideas would be appreciated.