Ok so i have a Gs-12 pocket bike which i believe is a 49cc 2 stroke engine. it has lights,horn,blinker,and a electric start. Now the problem i have is i get great spark and gas is going to carb but its not starting. so i took the whole thing out and did a compression test and got 75psi after 5 pulls. is this good or bad, should i tear into engine or buy a new one? i dont know help!