Ok I just retorqued the head and changed the cam seals after I just replaced the hg on my 7m. I forgot to re-align the cps so I pulled that out and did that and still no start, it cranks and sometimes gives me a small backfire. I have a code 51 and that's it. That is the tps or ac circuit, I'm not sure if that has anything to do with the no start or not. The spark plug valley had oil in it also, so I pulled the plugs and soaked all the oil up and cleaned the plugs and wires, no start. I'm wondering if its the plugs or wires that aren't firing now I have changed them twice with in 3 months I have owned the car... I made sure its not 180 off and its all on time. Need help any suggestions please, I have searched as much as I could before I posted also so I don't get flamed for that. Thanks, sorry so long just want to give you guys all the details.