Technician A says that excessive black or gray smoke emissions from DPF (Diesel Particulate Filter) equipped engines may be caused by restricted air inlet systems or inadequate airflow into the engine. Technician B says that intake temperatures from the intake air sensor are used to modify fuel-injection timing and fuel rates to minimize emissions. Who is right?

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The Answer of Technician A says that excessive black or gray smoke emissions from DPF (Diesel Particulate Filter) equipped engines may be caused by restricted air inlet systems or inadequate airflow into the engine. Technician B says that intake temperatures from the intake air sensor are used to modify fuel-injection timing and fuel rates to minimize emissions. Who is right?

Technician a Says That Excessive Black or Gray Smoke Emissions