when i start my bike it runs but when i put revs on it dies out ?

Have a look at the main jet it may be blocked,if it is a dirt bike I would suspect dirty jet,muck or water in fuel bowl,either way your carb sounds like it needs a clean.

Rich
March 2013

Not enough fuel/air mixture will cause this. Does it have an air filter? A fuel filter? When the motor on my garden tiller died like this last week it was the air filter - I washed it in spirit and we were back in action.

Good luck...

Peccavi
March 2013