trailblazer 2002. trailported. rcr stageone kit. 34 mm. carb. headmilled . running 1 gallon 111 octane to 4 gallons pump gas runs great. for the last four years. no problems. sold it to my brother he rode it once or twice no problems . then sold it to a good freind for his daughter. took it to the dunes . when it runs for a while it will bog way down to the point it will die until it cools down. i know it is jetted right had it myself at the dunes twice... looking at the fuel filter it looks like it is slow to get fuel back in to it.... any input would be great... p.s. it also has a weisco piston next size up from stock...

 

ttt

 

Sounds like it may be time for a topend redo.Check the compression.