what do you think?

[mudlover]

i just got a used 2003 blaster , ran great for a day or so , now it smokes and pings under slightest throttle, then boggs if you go past 1/4th throttle , its supposedly bored but i havent taken the head off to see. i have good compression , carbs clean , good spark ... i just dont kno what it could be
(o and im an engine noob, but i got a few mechanics helping me out)

 

[89custom]

what colour is the smoke? 2 strokes smoke but if it smokes alot, what colour.

 

[mudlover]

alot of slightly blue smoke under throttle

 

[codykeon18]

What do you have your air/fuel mixture screw set at?? Turn it all the way in and then back it out 1 - 2 1/2 turns out.