The 91 is a Mustang, not a Ranger. I have good spark and good fuel pressure at the injector rail, but engine will not fire or run. When I pull a plug after cranking on it a bit the plugs are dry. How do I check to see if the injectors are getting a signal to spray? If they are not then where do I look first? I bought the car from a guy who knows nothing about cars. He says it got hard to start but would run good once started. He drove it until it quit starting all together. I checked the AIC and the EGR and neither were stuck open. It has the DIS ignition.