I had a 1996 cavalier that failed emissions. 2.2l engine ran rich above idle. Ohms tested all 4 injectors, 3@12.8 and 1@ 30.0. Amp pattern on lab scope showed 1 amp on 3 injectors and 3/4 amp on injector with 30 ohms. Customer didn't want car fixed, but if low... Login to read more.