Over time and countless miles you may run into a failed injector in your 7.3L Ford Powerstroke. This can lead to hard and no start situations, rough idle, white smoke, poor fuel economy, and poor performance. Replace your failed injector or injectors with the XDP Remanufactured Fuel Injector. Each injector is precision remanufactured to ensure they exceed the most current design specifications and tested for injection timing measurments, poppet seat leakage, and shot to shot flow meters for best in class testing. Other tests include leakage and opening operation as well as nozzle flow and needle lift. Sold individually.