AURT304666A Repair and replace emission control systems

38. Clean diesel engines that use low fuel are also fit with EGR & PCV systems. 39. filters (traps) & catalytic converters are types of diesel “after treatment” systems. 40. Diesel engines cleaned up their exhaust through OBD-II engine controls and common . electronic fuel injection with high pressure piezoelectric direct injectors. 41. ................
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