Technician A says that a low-restriction exhaust system could prevent a back pressure-type vacuum-controlled EGR valve from opening correctly. Technician B says restricted exhaust can cause the EGR valve position sensor to fail. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Question 2
In typical engine lubrication systems, what components are the last to receive oil?
A) Rod bearings B) Main bearings
C) Oil filters D) Valve train components
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The oil pressure switch is connected to a warning lamp that alerts the driver of low oil pressure.
Pressure drop after 10 minutes on a normal port fuel-injection system.
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