I have a 2004 Nissan Altima 2.5 I done a head gasket on it then I lost key I got a new one and got it programmed and now it won't start

Hello, your story sheds a little bit of light on your vehicle and concern, but doesn't give us information needed that hands on testing with the aid of diagnostic tools and a workshop manual can give. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops