I put a new head on my car an when I did that I must of knocked it out somehow well now it won't start I can't get it in time. I did TDC an the marks. So I did a conpression test an I'm not getting nun in all my cylders?? Get spark an gas just no conpression. Someone told me that the valves are opening when its susposed to be closing... so how do I fix this? Help... thanks.