Engine replaced,now won't start, does not display any codes,solution? on 2005 Infiniti G35

engine replaced with an 06 engine with 19,000 miles,when started ran for about a minute and then shut down. Would not start again, it did not throw any codes. Looking for a solution. Could it be a security code?

Asked by for the 2005 Infiniti G35
A car needs fuel, spark and compression to run. Its most likely fuel or spark, either could be lost due to security/antitheft.
Crank the engine see if you have spark, Check for fuel pressure. Remove the fuel hose that goes to the fuel rail and get a friend to crank over the engine to see you have adequate fuel pressure and volume. Listen to the fuel injector, use a long screw driver place the handle end up to your ear and the metal tip end up to the fuel injector, get a friend to crank over the engine while you "listen" to the fuel injector. You should hear click, click, click as the injector is opened and closed by the computer, if the injector is not being triggered you will not have fuel getting into the engines cylinders.
Thank you for your response, there is no spark, all connections have been double and tripled checked,still no spark.