fuel injectors

Why did you change the injectors? Were they leaking gasoline into the cylinders? If so, the cylinders could be full of fuel and you could damage the engine or have a fire if you continue to crank the motor. Also, if there's a cylinder full of fuel, it'll seep past the piston and into the crankcase oil, possibly causing an explosion or fire. At the very least it could dilute the oil and damage the engine if it's run with contaminated oil. You need to be extremely careful releaving the engine of excess fuel to avoid a fire or explosion, if that's the problem. Here's a directory link for you. You may need to tow the car to a shop for this. http://repairpal.com/nissan-repair-in-brigham-city-utah

man i did the same thing for one bad injector and car smoking (running super rich) after i put it back together i had the same problem and it is the combustion chamber filling with gas and gives that banging noise and wont turn over. i think it is a crankshaft position sensor or camshaft posotion sensor? dont know yet.