Blaster wont rev..sounds like ebrake is on.

Sometimes your ebrake even tho its off the cord will be stuck so move it around and see if that helps. Or One or more of your reeds is broke on your reed valve. When i broke a reed my blaster would idle but would die when i reved it up. i hope this helps
 
Unplug the e brake, a lot of times, water will get in there and make the bike think that the thing is really on.
 
Mine did that, I had to cut and short out the wires on the e-brake to make it work. I don't know, seems to work 100% now.