Fuel injectors not firing because they have no power

Just because injector has fuel doesn't mean its firing engine requires air and fuel squit some start assist spray into air intake pipe if it starts it means injectors not firing then check electrics

make Model? Year?

year/make/model/engine size??? Do a fuel pressure test to see what the pressure is. Low/no pressure= poor spray

the fuses ,,,then call a local mechanic as could be a immobilisor fault ,again anything from a damaged wiring loom to a crank sensor with a dodgy connection or just failed

have you checked for codes. you should have power and ground at the coil plug. note the computer is what grounds the circuit to fire the ignition coil. if you don`t have a ground then it could be a bad coil driver in the computer, which means you will have to have the computer replaced a possibly programed to the car.

What test told you it is not firing?

You may have valve damage &
little compression

If it has fuel pressure and the injectors are pulsing, then it has to be getting fuel. was it running ok before the fire?how long has the car sat? the injector should have 12v and hot when key is on, the ecm provides ground for the injectors. you said it has pulse, so its working. fuel should have approx 35-40psi

CHECK FUEL PUMP AND FUEL INJECTOR FUSE.IF FUSE IS GOOD.YOU NEED A NOID LIGHT TO CHECK TO SEE IF INJECTORS FIRING.YOU CAN BUY A NOID LIGHT AT ANY AUTO PARTS PLACES.WHAT YOU DO DISCONNECT FUEL INJECTOR CONNECTOR.HOOK NOID LIGHT TO CONNECTOR.CRANK ENGINE TO SEE IF NOID LIGHT BLINKS.IF YES INJECTORS FIRING.IF YOU GET STEADY LIGHT.PCM NOT WORKING NOT FIRING INJECTORS.IF YOU GET NO POWER OR LIGHT DONT WORK.YOU HAVE A WIRING PROBLEM.YOU NEED A HAYNES REPAIR MANUAL LOOK AT THE ELECTRICAL WIRE DIAGRAM.TO TRACE FAULTY WIRE.

First, never use starting fluid on a gasoline engine. Check for dirty air filter, then check for Mass air flow sensor (Fault code) . This sensor controls fuel mapping, bad signal here will cause over fueling (black smoke) also called loading up (rich). Stopped up Air filter will affect Mass air flow. Perform OBD II test to prevent buying unneeded parts. Also delete stored codes.

Look you are looking at a number of things when a Cylinder, it can be electrical,1 like the spark plug can be not working, 2 the distributor cap if the car has one, 3 The spark plug wire that runs from the distributor to the spark plug that spouse not to work, 4 The fuel distributor if the car has mechanical fuel injection,5 The injector it self, is a way to diagnose it by first identify which Cylinder is not firing, also can be a burn intake or exhaust valve, to find out that you need a compression test at that not working cylinder. 2A
NOW if Your car is electronic fuel injection it can be a defective injector or the computer, You can try by taping on that injector wile motor idles, good luck