Originally Posted by Bikeguy Joe
Does it die when you stop? Turn your idle up some, the screw can vibrate loose.
When you take the plug out, look at it and see how it's running.
Going from 16:1 (ridiculously oily mixture) to 32:1 will make your engine run richer, fuel to air wise.
In fact, running two gallons of 16:1 will ruin your plug...
what? i ran my engine on 16:1 for half A year before switching to 20:1. then engine ran fine for over 4000k i had the same plug the whole time