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I completely agree with you Lou. However, manufacturers don't always give detailed information. And sometimes its proprietary. Same with troubleshooting. It will tell you what to check, but not why.

That makes sense. Now I am curious to know why heavy duty diesel engines don't use lambda sensors. I assumed that their fuel mapping inputs would give enough data for them to identify unfavorable conditions, and adjust fueling accordingly. Or at least trigger a fault code if the ECM determines...

Hi all, Can someone please explain the science behind increased particulate matter formation resulting from restricted EGR flow in a diesel engine? I often see DPF failures associated with EGR cooler fouling(without coolant leaks). I know that any disruption to airflow can upset AFR's, and I see...