?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
Answer: C
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A vehicle comes into the shop and the technician retrieves the diagnostic code P0401 "EGR flow insufficient." Which of these could be the cause?
A) Electrical wiring shorted B) EGR valve stuck open C) Clogged EGR ports or passages D) All of these are correct.
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Which sensor is generally considered to be the electronic accelerator pump of a fuel-injected engine?
A) TP sensor B) O2S C) ECT sensor D) Engine MAP sensor
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Displacement level sensors are especially appropriate for measuring __________- liquid interfaces.
A. solid B. liquid
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