Technician A says if you remove the PCV valve from the valve cover and plug the end with your finger, the idle will increase if the valve is good. Technician B says that when you block the flow to the PCV valve, it will richen the air-fuel mixture. Which technician is correct?

A. Technician A
B. Technician B
C. Both technicians
D. Neither technician


Answer: B

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