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Q9: Two technicians are discussing variable valve timing.

Q10: Hydraulic valve lifters can make a ticking

Q11: On an engine with variable cam timing,

Q12: The valves could be bent if the

Q13: Technician A says that the pushrods should

Q15: If the exhaust valve opens at 57°

Q16: Which term is used to describe the

Q17: Flat-bottom valve lifters rotate during operation because

Q18: A cylinder deactivation system uses _ _

Q19: The PCM controls cam timing by use