i litterally just rebuilt this engine, got it all back together went to start it for the first time and it started perfectly, i let it go through its first heat cycle waited for it to cool down then went to do the second heat cycle and it started up first kick again and after about 45 seconds i eased on the gas and it back fired and shut off, i then assumed reeds but i check them out and they were fine so i was thinking reed gaskets so i got some new ones put it all back together and then when i went to start it, it didnt fire at, went to check spark and im not getting any spark, any ideas on what happened?
