Nissan Repair: nissan maxima will not start, nissan maxima, crank sensor

Question
nissan maxima 99 will not start and fuel pump was changed and crank sensor is good. fuel gets to fuel filter but not into fuel rail. mecanic could not find problem. He said injectors are not firing and does not know why. what do i do

Answer
Matthew,

I would check the fuel injector relay and fuses to make sure they are getting power.  You can check an injector to see if it gets power.  The way the system works is the injectors are powered, key on, and then they are grounded individually when they squirt fuel.  Also, check the cam position sensor.