Technician A says that when draining the engine oil, the engine should be fully cold for best results. Technician B says that the engine should be running when checking the engine oil level. Who is correct? Select one: a. Technician A b. Technician B c. Both A and B d. Neither A nor B

What checks can be performed to know if the lubricating oil of an engine has been contaminated?

When performing an engine oil level check, if additional oil is needed, estimate the amount by checking the emissions standards guide to the dipstick markings. Select one: True False

what are the two tune up methods used for a variety of big bore cummins engines

What component is responsible for circulating coolant through the engine

Technician A uses sandpaper to remove carbon deposits from turbocharger wastegate parts. Technician B scrapes off heavy deposits before attempting to clean the unit. Who is correct?

How many degrees the crankshaft will rotate with both the intake and exhaust valves seated when the intake opens 20 deg. BTDC, the exhaust opens 55 deg. BBDC, intake closes 25 deg. ABDC, and exhaust closes 45 deg. ATDC.

If oil pressure is higher than specifications: Select one: a. there may be excessive clearance in the engine bearings. b. the oil pump may be worn. c. the engine is noisy. d. the oil pressure regulator might be sticking

While discussing the compression ratios used with engines equipped with a GDI system: Technician A says that higher ratios can be used because ignition timing is normally very advanced. Technician B says that higher ratios are possible because the small droplets of fuel injected directly into the cylinder tend to cool the mixture in the cylinder. Who is correct?a.tech a b.tech b c. Both a and b d. Neither a nor b

Technician A says that liquid cooling an engine helps to maintain a consistent operating temperature. Technician B says that oil is circulated through the cooling system to remove heat from the engine's parts. Who is correct?   a. Technician A     b. Technician B     c. Both A and B     d. Neither A nor B