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or
every
10,000 miles; and finally a complete test and diagnosis
to
tell you the condition
of
the
entire
ignition,
compression,
and carbu-
retion
systems.
This service may be
obtained
at a nominal cost. While
it
is not
intended as
a
"cure-all",
it will help eliminate guesswork in locating
potential causes of engine trouble and
prevent
future trouble.
WHEN TO HAVE A TUNE-UP DIAGNOSIS JOB-
Due
to the
..
differences in driving habits and driving conditions, it is rather hard
to
set
a definite schedule for this service. Generally speaking, it is
good practice for the average d river
to
have a Tune-Up Diagnosis
in the Spring and again in the
Fall.
If you use your
car
in
your work
and put on a
lot
of miles,
you
may want to have this job performed
every 10,000. miles.
On
the other hand, some
owners
may prefer to get a tune-up
only
when
some
irregularity
such
as hard
starting or
missing at low
speeds indicates
that
some service
is needed. This is not a bad rule
when a
car
is
fairly
new,
but
as mileage
increases
the
possibility
of
failures in the ignition,
compression,
and
carburetion systems
increases.
Furthermore, failures
experienced on
the road might
prove costly, porticularly if they happen at night or on a
Sunday
drive
when service stations
a
re closed. Your Pontiac
dealer's
Tune-Up
Dia
gnosis service will help find deficiencies in the
ignition:
compression, and carburetion systems
before
they
occur,
thus
saving you inconvenience and
expense:
SERVICES INCLUDED IN THE TUNE-UP
DIAGNOSIS-The
services of the
-
Tune-Up DiagnOSIs
can
be
segregated
into three
groups of operations. The first group includes the adjustments which
are recommended as necessary every Spring and Fall
or
every
10,000 miles.
The
second
group
ha
s the lubrication of those
engine
units which do not
require
attention every 2,000 miles. The last port
of the Tune- Up
Diagnosis
covers checking and
testing
the ignition,
compression, and carburetion systems for
indications
of trouble.
TUNE-UP ADJUSTMENT GROUP-
1.
Clean and space spark plugs,
(spa
rk
plug
gap
.025·
).
2. Clean and space distributor points
(breaker
contact gap
.022"'
on
six cylinder and
.016'
on eight.)
3
.
Set
timing.
4.
Adjust carburetor
idle.
MINOR
M~INTENANCE
AND LUBRICATION GROUP
1. Add
water to
battery.
2. Wipe
exte
rnal parts
of
spark plugs distributor
cap,
coil terminal
.
and ignition wires.
39
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