I recently changed the motor on my 05 zx4 and now I'm having a starting issue. The car wont start! I've been over it with a fine toothed comb and still nothing. Compression is between 150 and 160 on all cylinders. Fuel pressure is 42 psi. All plugs are firing. All injectors are pulsating, but still the car wont start. It almost shudders and comes close to starting, but just wont complete ignition. I think it might be leaning towards a bad pcm but ???. What makes me think this is because, when I try to link a code reader diagnostic device to it it says, "cannot connect to vehicle". I've also thought maybe it's the security and I've tried all the steps I can find online to turn it off but as of yet nothing's worked. I welcome any thoughts on what may be the issue I'm experiencing. Thanks.