Technician A says that a heavy engine load results in high intake manifold vacuum and a high MAP sensor signal voltage. Technician B says that a MAP sensor uses a perfect vacuum (zero absolute pressure) in the sensor to determine the pressure. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician


C

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The valve body bores are being discussed: Technician A says the bores should be measured with small bore (hole) gauges. Technician B says the bores only need to be cleaned if the damage to the valves can be corrected by polishing. Who is correct?

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