so after my girlfriend had her car for a week it did a head gasket. i have since replaced the head gasket and re-assembled the motor but I'm having problems getting it running again. when i go to start it, it will go under its own steam for only a second then make this killer screaming noise and misfire and rev to something crazy. i've checked all the vacuum lines as i first though it was a vacuum leak and still do but don't know where else it would leak from.
please help
p.s. i used all new gaskets and all the surfaces were clean so i just don't know