Which of the following are symptoms of a fault in the EGR system? A) Detonation during acceleration or cruise B) Rough idle and stalling C) Excessive NO_x emissions D) All of these

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All of these symptoms could indicate a fault in the EGR (Exhaust Gas Recirculation) system. Detonation during acceleration or cruise can be caused by an overly lean air/fuel mixture, which may occur if the EGR valve is stuck open or the EGR system is not functioning properly. Rough idle and stalling can also be caused by a malfunctioning EGR valve or clogged EGR passages, as this can affect the engine's air/fuel ratio and cause irregular combustion. Excessive NOx emissions are also a sign of a problem with the EGR system, as the EGR system is designed to reduce NOx emissions by recirculating exhaust gas back into the engine.

Which of the Following Are Symptoms of a Fault in the EGR