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WorksheetsFuel Systems
Total questions: 10
Worksheet time: 5mins
In order for the engine to run properly, the fuel must be:
mixed with air at 15 pounds per square inch to one part of gasoline
15 parts of gasoline to one part air
one pound of gasoline to 15 pounds of air by weight
none of these are correct
An air cleaner is essential to engine operation because:
it keeps out the dirt
it controls top speed
the engine cannot run without an air cleaner
all of these are correct
In the gravity feed system:
the tank is below the carburetor
fuel is drawn up by suction
the tank and the carburetor must be very close
the tank must be above the carburetor
The float chamber, float and needle valve do the following in a carburetor:
control the level of fuel
atomize the fuel
cause the engine to accelerate
all of these are correct
The fuel pump in a small engine is a very simple one consisting of:
intake valve and camshaft
float and needle valve
suction pipe and shutoff valve
none of these are correct
In its simplest form, a carburetor is:
a tube with a venturi
a main jet near the venturi
a float and needle valve
all of these are correct
The simple carburetor:
cannot be used to run the engine
will allow the engine to run fast
will allow the engine to run at various speeds
all of these are correct
A throttle in the carburetor:
is used to control the speed of the engine
allows the engine to start easy when cold
controls the idle mixture
all of these are correct
The idle jet allows the engine to:
start easily when cold
reach top speed quickly
keep running when the throttle is closed
run economically
The choke valve:
is used to control engine speed
should be opened as soon as possible after the engine starts
is used to reduce the size of the venturi
all of these are correct
