Ok, so I built this bike up from a kit and an old yard sale 10-speed. It's an "80cc" 2-stroke kit (as I've seen up here, it's pretty much standard). Right out of the box it ran pretty well but I wanted to make some motor-mount adjustments to take away some of the vibration. So I moved the motor around and did a few things with rubber bumpers and whatnot -- nothing extreme. Well, the motor mount experiments all went bust and I decided to just clamp it back on in its stock configuration and I figured I could just deal with the vibration another way.
So I got it all bolted back up and now I have another problem. At low RPMs it runs very well (that's about 15-20mph or so). However, when I open up the throttle, it starts to speed up and then hesitates and sputters. This last problem is KILLING me! I can't seem to figure it out. I've replaced and re-gapped the spark plug: I've replaced the fuel filter: I've replaced the air filter: I've replaced the intake manifold gasket: I've completely taken appart the carburator and put it back together: and I've remixed the gas to a better less-oil ratio (because I was still running on the burn-in ratio).
Could the angle of the motor make a difference? Right before I put it back to stock, I had the motor tilted pretty far forward in order to take the slack out of the chain. The vibration in the seat was extreme and downright painful, but man that thing would MOVE! I'm tempted to put it back to that again just to see if it has an effect on the hesitation.
In any case, if anybody has any thoughts on this I would really appreciate it.
So I got it all bolted back up and now I have another problem. At low RPMs it runs very well (that's about 15-20mph or so). However, when I open up the throttle, it starts to speed up and then hesitates and sputters. This last problem is KILLING me! I can't seem to figure it out. I've replaced and re-gapped the spark plug: I've replaced the fuel filter: I've replaced the air filter: I've replaced the intake manifold gasket: I've completely taken appart the carburator and put it back together: and I've remixed the gas to a better less-oil ratio (because I was still running on the burn-in ratio).
Could the angle of the motor make a difference? Right before I put it back to stock, I had the motor tilted pretty far forward in order to take the slack out of the chain. The vibration in the seat was extreme and downright painful, but man that thing would MOVE! I'm tempted to put it back to that again just to see if it has an effect on the hesitation.
In any case, if anybody has any thoughts on this I would really appreciate it.