I am looking for someone that knows why i lost injector pulse on #3 and 4 cyl. I have changed cam sensor and ecm and other stuff but still cant get pulse on those 2 cylinders

 

This is a longshot, but have you checked the fuel relay? Also, have you put a noid light on the two injectors in question and checked to see if you are getting an electrical pulse, but just no response from injector itself? Have you checked for continuity on the wires leading to the injector connections?

 

there is just no pulse from the ecm i used a test light at the injector and the ecm. it has the constant 12+ to all injectors just no signal out of the ecm to 3 and 4