i had this problem on my 87 22r. i had to take the top part of the carb off and take a piece of 14 ga. wire cut it open and use one strand to poke out the accelerator pump jet. after that i had no more problems starting. its the jet that squirts the fuel in when you pump the pedal. it squirts into the passenger side barrel. also i dont think the fuel is draining out, because if it draind into the engine it would make it start and if it drained onto the ground you would notice.
