Author Question: If the engine oil is not changed regularly, what is the most likely fault that can occur to an ... (Read 112 times)

kodithompson · **on:** Jun 23, 2018

If the engine oil is not changed regularly, what is the most likely fault that can occur to an engine equipped with variable valve timing (VVT)?

A) Low oil pressure diagnostic trouble code (DTC)
B) The filter screens on the actuator control valve become clogged
C) A no-start condition because the camshaft cannot rotate
D) Any of the above

Question 2

To reduce oxides of nitrogen (NOx) exhaust emissions, which camshaft is varied?

A) Intake camshaft only
B) Exhaust camshaft only
C) Both the intake and exhaust camshaft
D) The exhaust camshaft is advanced and the intake camshaft is advanced