1992 Cadillac EL Dorado stalls and now wont start

Thanks for all the info. Helping you find a fix is going to rely on determining what you do not have. You say you had pressure when it was running, it needs to be checked again now that it is not starting. Just because you can hear the pump, does not necessarily mean it is producing adequate pressure. One way to determine if it is fuel aside from a pressure check, is to try some starter fluid(or carb cleaner) down the barrels. If it starts(tries), you still have a couple possibilities, one could be fuel pressure, the other could be injector pulse, check pressure first. If it don't try, you need to now check spark at one or more plugs. Did you put an engine control module, or ignition control module in? Was it in the distributor? It could be the cap/rotor, you will know after removal, if it is burned through at the coil contact. You can check the coil with an ohmeter, it should have relatively low resistance at the two wires with the metal tabs(say 1500 or so), much higher when measured from one tab(or the other) to the center contact. Try these tests and post your results. If it has no spark, and you don't get any obvious signs of cap/rotor, it is most likely the coil or ignition control module, with the module being most probable.

There is no standard for the way it should come out of the test port when pressed with a screwdriver. It really needs a pressure gauge attached, your looking for approx 40 psi. How did you check spark, place a screwdriver in the plug end and hold it close to a ground(exhaust manifold, master cylinder, engine block, something metal). When you open the throttle, and the two plates open, spray it like your cleaning it. You will get enough in there to know if fuel is your problem.