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Like Rick said, you will need some type of scan tool or hand held tuner with scanning and onboard testing capabilities. You are listening to the differences in the sound of each injector. If the injector fails electrically, a code for that injector will set. You will also notice the tach needle sweeping as each injector buzzes in succession.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
