Technician A says that a 3x5 card should be held against the oil fill opening if the positive crankcase ventilation system is working correctly. Technician B says that if a PCV valve rattles then it’s working properly. Who is correct?

Respuesta :

Answer:

Both Tech A&B are correct

Explanation:

Answer: Technician A

Explanation: Both technicians is wrong for sure. And took penn foster.