Cylinder #3 on my d15b7 isnt firing. It has spark and the distributor is good, the fuel injectors are getting power but I noticed that Injector #1 and #3 are cracked where the spray nozzle is.

Im ordering new ones but Im wondering if the crack could have caused this altogether

 

If you know that you have spark at the plug in cylinder #3, you need fuel and compression to make it work. Move the #3 fuel injector to another position on the fuel rail: IF the problem moves with it to the new position, then you know that the fuel injector is the problem. If the mis-fire stays in cylinder #3 after moving the fuel injector, then do a compression test on the #3 cylinder.

 

not to argue, but I would do the compression test before swapping injectors. Pulling a plug is a lot easier than pulling the fuel rail. Dumb question, you said you had spark on 3. Did you see the spark at the plug? or did you use a sparkplug tester between the plug and the wire. Ive seen spark at the end of the wire and still no spark at the plug due to a bad spark plug