Bought a used 2005 eton viper 150r. wasn't running. replaced fuel petcock, fuel lines, spark plug. took carb apart and cleaned it. Put everything back together and it started right up. I let it run for about 15 mins, then shut it off. Tried to start it a couple hours later and wouldn't start. noticed that there was fuel dripping on the ground, which is coming from the air filter case. Fuel appears to keep flowing into the carb, then into air case. pulled spark plug, and it is wet also.
Any Ideas or suggestions?

 

i think your float is stuck. i store my atvs with the valve in the off position. you may check your oil also.

 

Yes, a "fuel by the petcock" issue.
Jaster is correct, better check the oil to make sure it hasn't filled the bottom end w/gas.

 

Fuel is going by the float needle.
Try cleaning the carb.