carberator need to be check for dirt and cleaned,the fuel line for open  crack.also the end of the fuel to be tight fitted, not  loose. the breather  hole is there for  a purpus,if it want to release fuel thru the breather hole , let all the air out from the gas  tank ,i had the simler  problem.the gas is not getting to the carbertor. also check gas tank for  dirt and clogged fuel line.
                 shadow_08
                
 January 2011