Engine test quiz 1

Cylinder leakage is measured when the piston is at __________.

• TDC

• BDC

• In the middle of the cylinder

• 3/4 to the top of the cylinder

A coolant leak would emit _____________ smoke from the exhaust.

• blue

• white

• black

• green

An engine has a fast cranking sound, what could possibly be the issue?

• bad starter motor

• high compression

• bad spark plug

• broken timing belt or timing chain

During a vacuum test on an engine, a technician gets a low, but steady reading. What could be a potential issue?

• failed catalytic converter

• late ignition timing

• failed piston rings

• burned valve

During a cylinder leakage test, air can be heard escaping from the tailpipe. What could cause this?

• This is normal for most engines

• Intake valve is bent

• Exhaust valve seat failure

• intake valve seat failure

What kind of issue could be found in a WET compression test?

• Worn piston ring

• hole in the piston

• worn valve

• worn camshaft

The Unit of measure for a compression tester or cylinder leakage tester is:

• psi

• kPa

• both psi and kPa

• none of the above

How many degrees does the crankshaft turn in one complete engine cycle? (4 stroke)

• 180
• 360
• 540
• 720

What is the correct technical name for the 4 stroke cycle?

• Rudolph cycle
• Otto cycle
• Benedict cycle
• Auxiliary cycle

Name the item in the picture:

• Gas Cap

• Radiator Pressure Cap

• Water Pump

• Thermostat