Answer :
Final answer:
Technician A and Technician B are both correct. Paccar MX engines from MY 2013 use a pair of EUPs to supply the common rail with high-pressure fuel, while Paccar PX engines use a Bosch CR fuel system.
Explanation:
Both Technician A and Technician B are correct. For MY 2013 and later Paccar MX engines, they indeed use a pair of EUPs (Electronically Controlled Unit Pump) to supply the common rail with high-pressure fuel. This is a precision method of delivering fuel to the engine's cylinders.
On the other hand, Technician B's statement is also accurate. Paccar PX engines utilize a Bosch CR fuel system. CR stands for Common rail. Bosch is a renowned provider of vehicle and industrial technology, hence their CR fuel system is broadly used in various engine applications including Paccar PX engines.
Learn more about Engine Fuel Systems here:
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