A commercial compression tester
will indicate compression pressure
and what else?
The percentage of air loss in a
The air temperature in a
The amount of carbon built up
on a piston
IN ANSWERING QUESTIONS 349 THROUGH 3-52,
SELECT FROM COLUMN B THE POSSIBLE CAUSE OF
THE TROUBLE IN COLUMN A.
COLUMN B MAY BE USED ONCE, MORE THAN ONCE,
OR NOT AT ALL.
Which of the following conditions
may be directly caused by a valve
that is adjusted too tightly?
Cocked valve spring
Loose adjustment locks
Loss of compression
When you adjust the valves, the
piston should be in what position
and on what stroke?
TDC of the compression stroke
TDC of the intake stroke
BDC of the intake stroke
BDC of the compression stroke
Why do valve lifters of the type
shown in figure 3-14 of your
textbook provide ideal valve
They operate at zero clearance
2. They compensate for engine
They adapt automatically for
minor wear at various points
All of the above
A mechanic should measure the
eccentricity of a valve before
deciding whether to reuse or
Valves and their seats are refaced
at exactly the same angle to help
the valves cut through carbon
deposits for improved sealing.
During the process of grinding
valve seats, a valve seat grinder
is kept concentric with the valve
guide by what means?
Upper and lower grinding stones
Centered grinding stones in the
A self-centering pilot in the
One method of checking the valve
seating is to coat the valve face
lightly with prussian blue and
twist the valve one-quarter turn in
How can you tell whether
the valve seat is concentric with
the valve guide?
Prussian blue will transfer
evenly to the valve seat
There will be no trace of
prussian blue on either the
valve or its seat
The shade of prussian blue will
Prussian blue will collect in a
pile on the valve seat