i got my .42 tt engine going to day i just bought it because iam a begginer .i could not get it starthed for a little bit but i cept ajusting the engine than it would start that it would run good but it would stall. why would it stall all i did was bring it out side when i got it started but then i guess the tempiture was -10 .c does the cold air stall it?. or wat is happening