valves

valves

100

valve springs must be replaced if they 

are bent, not square, do not meet tension specifications 

200

the camshaft opens and closes the 

intake and exhaust valves

300

the difference in the angle between the valve seat and the valve face is called  

interference fit 

400

valves that are used in a 4-stroke cycle engine to open and close the port openings are called 

poppet valves 

500

briggs and stratton recommends that valves be replaced when the margin measures less than 

1/64

valves

100

what causes valves to stick 

gum accumulation

200

which is not a part of a valve system 

ring 

300

what are the 3 main types of valve train configurations used in small gasoline engines 

L-head, overhead valve, reed valve 

400

the valve _________ consists of all of the components that work together to transform the rotation of the crankshaft into the opening and closing of the valves 

train 

500

the thickness of the margin on a new brings and stratton valve is 

1/32

valves

100

a _______ must be used on each valve to hold it firmly against the seat 

valve spring 

200

a machined hole in the block through which the valve stem passes in order to align the valve and ensure accurate raising and lowering in relation to the seat is called the 

valve guide 

300

What is used in an engine to control the flow of fluids

valves 

400

which of the following is not a type of valve failure 

swollen 

500

_________ is a process where the valve face is rubbed against the valve seat using an abrasive compound in order to produce a particular type surface  

lapping 

valves

100

valve overlap is when both valves are 

open 

200

what is another name for a valve tappet 

valve lifter 

300

in the _______ arrangement, the camshaft is located in the crankcase and the valves are located in the cylinder block directly above the camshaft lobes 

L-head 

400

valves should be cleaned with a power wire brush and then 

inspected for defects 

500

why are the valves more important in a one-cylinder engine than in a multi-cylinder engine 

if the valves fail in a multi-cylinder engine you only lose a portion of the power but if they fail in a one-cylinder you lose all power 

valves

100

what pushes against the valve tappets to make them move 

cam lobes 

200

when referring to a type of engine OHV stands for

overhead valve 

300

the L-head engine is also known as the _________ arrangement 

valve-in-block 

400

in the ______ arrangement both the camshaft and the valve assemblies are installed in the cylinder  

overhead cam 

500

in the ___________ arrangement, the camshaft is installed in the crankcase and the valves are installed in the cylinder head 

overhead valve