CH 1 test

How many degrees of camshaft rotation are need for a piston to travel from TDC to BDC and return to TDC?

180

How many degrees of a camshaft rotation are needed to complete for a four stroke combustion chamber

360

How many degrees of crankshaft rotation are required for a piston to travel from TDC to BDC and return to TDC?

360

How many degrees of a crankshaft rotation are needed to complete the four stroke combustion cycle?

720

Tech A always inspects or replace the drain plug gasket when performing an oil change. Tech B says that warm oil holds contaminants and flows faster then cold oil. Who is correct?

Both techs

Tech A says that the lubricating system forms a seal between the piston rings and cylinder walls. Tech B says the lubricating system helps cool engine parts. who is right?

Both techs

Tech a says that oil pressure is normally higher when the engine is cold. Tech B says that normal engine oil pump pressure ranges from 20 to 80 psi (200 to 400 pka) or 20 psi every 1000 engine RPM. Who is correct?

Both techs

Tech a says to use lineman's gloves when servicing the high voltage system on a hybrid electric vehicles. Tech B says that hybrid vehicles have a plug to disable the high voltage system before service. who is right?

Both techs

Two techs are discussing oil pumps. Tech A say that many oil pumps are driven directly off the front of the crankshaft. Tech B says that some are driven from the distributor if the engine uses a distributor type ignition system. Who is correct?

Both techs

The oil drains back oil pan through______.

Drainback holes

A major advantage of using synthetic engine oil its ability to remain _____ at very low temperatures

Fluids

Some of them wiring under the hood of late model vehicle is encased in bright orange covering. This indicates a ___.

High voltage electrical system

A tech is preparing to do an oil change on a hybrid vehicle. What special precaution is needs to be taken BEFORE performing this service?

Make sure the ignition is OFF and the key is removed from the ignition switch.

The oil pressure relief valves control _____ oil pressure in the lubrication system.

Maximum

Technician A uses a steel gasket scraper on aluminum engine part. Technician B uses a plastic or wool scraper on aluminum engine parts. Which technician is correct?

Technician B only

Oil viscosity refers to which of these?

Tendency of oil to resist flowing

on some engines equipped with a timing belt, the belt also may drive the _______.

Water pump

Oil with a high viscosity has a ______ resistance to flow than oil with lower viscosity?

higher

A hybrid vehicle has a feature that could allow the engine to start and run without warning. This feature is called____.

self start

The engine oil life monitor may be based on

vehicle mileage or a PCM programmed algorithm