I have a brand new King motors 34cc and yes I know it's junk but at the very least I would like to get it started.I have adjusted the carb to factory spec so that is all good to go the kill switch is working and I am getting spark.Here is the problem.Every once and a while if I pull the plug to pull on the pull start to un flood the engine it is almost like the engine locks up and I can't pull on the pull start and turn the engine over.I haven't been able to start the engine so I am lost as to what it could be.The primer bulb is showing fuel and it is pulling fuel into the carb.Could the return line being submerged in fuel cause this?Any ideas would be great?