I have changed the fuel pump on a s10 chevy blazer 4.3 2wd and the sensor pressure. and it still will not turn on, I have good spark on the spark plugs. I would really like some advise.

Help any one

any ideas on why wouldn't my blazer turn on after changing the fuel pump and pressure sensor.

 

You changed the pump and "Sending unit"? Thats the part that the pump mounted into with the arm that moves up and down. Its the thing that measure the level of fuel and holds the pump at the bottom.

What is your fuel pressure now, what year of vehicle and engine model are we dealing with now? You need to do a pressure test and report to us your findings with Key on - cranking - and key off....

 

i beleive the pressure should be around 60 -63psi but can you hear the fuel pump kicking on?