Cylinder heads and valvetrain
The term used to describe a new engine that only contains a block and rotating assembly
What is a short block?
After finding and identifying the location of a misfire, this is the test that should be initially performed.
What is a compression test?
Technician A says that it is important to use a spark plug socket when removing spark plugs. Technician B says that you can use any socket of the correct size to remove spark plugs. Who is correct?
Tech A
Modern intake manifolds typically have gaskets made of this material.
What is Rubber?
The word used to describe how far the valve opens
The style of engine where coolant directly contacts cylinder walls.
What is a wet sleeve engine?
The lowest compression reading should be within this percentage of the highest compression reading.
What is 75%?
Technician A states that the thermostat controls coolant flow through the radiator. Technician B states that the Thermostat allows for a controlled engine warm up, who is correct?
Both A and B
what is Steel and Cast iron?
The tool used to measure valve clearance
What is a feeler gauge?
please list the steps in the 4 stroke cycle in order.
What is Intake, compression, power, and exhaust?
0psi
Technician A states that a turbocharger is a way of forcing more air into the engine. Technician B states that more air in the cylinder means more fuel can be injected into the cylinder without messing up air-fuel ratio. Who is correct
Both A and B
This component limits boost pressure by venting exhaust gas prior to reaching the turbine
What is the Wastegate?
the Term used to describe the change in timing when the valves open later than normal
What is vacuum fill/bleed?
What is a combustion leakage test?
Technician A states that the height of the camshaft lobe determines valve duration, while Technician B states that the height of the camshaft lobe determines valve lift. Who is correct?
Tech B
What is an intercooler?
What is
*CEL
*Backfiring
*Engine Knocking
*No start/hard start
*rough idle
*loss of compression
?
The primary condition that would lead to replacing the main bearings in an engine block.
Please list the steps to perform a compression test in order.
*check battery for a full charge
*disable fuel and ignition
*remove spark plugs
*install compression tester
*crank engine at WOT for at least 5 compression strokes
*record value and move on to next cylinder
Two technicians are performing a compression test on a vehicle. Technician A states that a compression reading of 120psi on cylinder two likely indicates a bad piston rings. Technician B states that you must record the compression readings of the other cylinders before you can make a proper judgment on what may be causing low compression. Who is correct
Tech B
These two components are an optional valve that can bleed boost pressure after it has been produced
What is compressor bypass valve/blow off valve