Replaced head gasket due to coolant in the oil. Now it won't start and shoots a puff of smoke out of what i believe to be the a/c idle up valve. Has anyone had this problem before or have any ideas of how to go about fixing it. Thank you in advance. Below is a link to a youtube video of what its doing when i try and start it.

 

Check your timing.... sounds like you might have stabbed your distributor wrong