My 1989 corvette has stopped running. It has 50 psi fuel pressure at the fuel rail and has good spark. The injectors have good pulse. Previously the injectors quit due to water in the fuel. After much tapping on them got them to work and car ran fine. Now the car quit out the blue. Won't start unless you spray gas in tpi unit and then will run for a couple of seconds. Other than that the spark plugs are dry. I have the injectors out now. My question is how to test them and can they be tested.
Frank