My blaster is not running rite

[Blaze]

Maybe someone can help me I have a 2006 yamaha blaster ...when I hit the gas it doesn't raise the ideal sounds like thumping and muffle no power but 2hen I ride it and go through the gears it moves but still has no power cleaned the crab changed the plug changed the gas still the same I'm lost don't no what else to try

 

[dirtysquared]

Did you try unplugging the parking brake sensor and deleting TORS?

http://www.blasterforum.com/threads/03-06-tors-removal-diy.41973/

The parking break sensor is easy...follow the wire down from the clutch perch, and unplug it from that harness. Done