Fuel Injectors Operating Check
WARNING: This page is about a different car, the 1989 Mitsubishi Van, 1989 Mitsubishi Sigma, 1989 Mitsubishi Montero, 1989 Mitsubishi Mirage, and 1989 Mitsubishi Galant. However, it is still accessible from the selected car via links, so may be relevant.
Using a stethoscope, check the operating sound of injectors during engine cranking or idling. Ensure operational sound increases when engine RPM is increased.