I have a 1990 cadillac brougham 5.7l 350 engine. Crank but no start. I have changed fuel pump, fuel filter. Car will start if starter fluid is sprayed in but then dies. Car sat up for 3yrs but ran fine when parked....do u think i need new injectors?

they could be clogged up, try pressure cleaning them first.

Ok thank you so much. I will look up how to do this...is this something i can do at home?

try pressure cleaning its right and next time add some addictive before parking

I will add the additive next time for sure...is there a video on how how pressure clean these? Do i need to remove them or can i clean while they are connected to the car?

These are the 2 injectors on the throttle body