topend breakup

[400killer]

04 warrior wb exhaust powerbomb header 150 jet k n filter rev box alum airbox ran great til i sucked in water. new sleeve wisco std high compresion piston,port polish head kibble white race valve springs,valves. 175 compression breaks up three quarter to full throtle,pulled out 150 jet put in 142.5 still breaks up go back to stock and try any suggestion would help

 

[beastlywarrior228]

sounds like you carb needs a good go through

 

[tyler]

A 142?? Thats way to small. Try cleaning the carb out.