Join Date: May 2010
Location: Eastern Washington, USA
Old post, but here goes....
Has it run in the past, since you've owned it, or did you buy it non-running? A little history would help us help you.
If it starts and idles, the problem is most likely not electrical. The PW's do have a throttle limiter (stopper) on the twist throttle to keep the little tikes from blasting uncontrolled into trouble. Have you looked in to that?
Otherwise, sounds like carb jetting might be off, or the carb is plugging up with our wonderful fuel we have nowadays. Also check the air cleaner and make sure the choke is working properly. A dirty air filter will make the bike run rich, which could cause it to blubber out while twisting the throttle or accelerating.
What model year is it? (Not that there were a lot of changes).