I just did the head gaskets on a g35 this past week I have it all put back together but the car will not start. I have confirmed that there is no spark but there is fuel. The car has a clifford intelliguard 770 after market alarm system on it. I have temporarily bypassed the ignition away from the alarm and it still is not firing.The factory alarm still works and I have tried many keys non will fire it. I have read that the NATS system will keep the alarm light solid red if the key has lost its programming? It does not do this and remains off once the key is turned forward.My code reader will not work on the car it never connects for some reason,so Im fishing in the dark atm. I have went threw all fuse boxes and checked every single fuse and all check out.I have been through the entire engine re-plugging all connectors.
What is the next step?
