?Technician A says that MY 2013 and later Paccar MX engines use a pair of EUPs to supply the common rail with high pressure fuel. Technician B says that Paccar PX engines use a Bosch CR fuel system. Who is correct?
A) ?Technician A only
B) ?Technician B only
C) ?Both A and B
D) ?Neither A nor B

Question

Quizplus · Accepted Answer

Paccar MX engines from model year 2013 and later indeed use a high-pressure common rail fuel system, but they utilize a high-pressure fuel pump rather than EUPs (Electronic Unit Pumps) to supply this system. Technician B is correct because Paccar PX engines use a Bosch Common Rail (CR) fuel system, which is a well-known fact in the diesel engine industry. Both technicians provide information that is accurate in the context of Paccar engines and their fuel systems, albeit with a slight misunderstanding from Technician A regarding the specific mechanism (EUPs vs. high-pressure pump for the MX engines).

?Technician a Says That MY 2013 and Later Paccar MX