Alright ... so my El Camino will not start! It’s an 85 4.3 v6. Never had any issues and on the way home it just died out. I thought it ran out of gas... nope. I changed the distributor cap, plug , and wires. Nope! I changed the ignition coil. Nope! I dropped the tank and changed the fuel pump, NOPE! New fuel filter too, NOPE! I was told it might be the ECM... I need some help. Also I don’t really know much about cars so it would help to explain a lil if anyone can help. Thank you!