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I don't know how long you've had your truck or what familiarity you have with Super Duties, but since 2005 the exhaust/ cat cooling makes a hell of a racket. Its so loud that you can even hear it at stop lights. Point is, if its a "pinging" and not "vibrating" or "rattling", its completely normal!
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
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.
