Yellow
line
Spark
delay
valve
to
distributor
Spark
delay
valve
to
vacuum
tube
Distributor
to
vacuum
tube
Vacuum
tube
to
carburetor
Vacuum
tube
to
canister
Green
line
Anti
backfire
valve
to
intake
mani
fold
Air
control
valve
to
emergency
air
relief
valve
Intake
manifold
to
vacuum
hose
connector
Intake
manifold
to
canister
CHECKING
ENGINE
COMPRESSION
COMPRESSION
PRESSURE
TEST
I
Warm
up
engine
sufficiently
2
Disconnect
all
spark
plugs
3
Disconnect
anti
dieseling
solenoid
valve
connector
4
Properly
attach
a
compression
tester
to
spark
plug
hole
in
cylinder
being
tested
Engine
Tune
up
I
ET010
Different
compression
in
two
or
more
cylinders
usually
indicates
an
improperly
seated
valve
or
broken
piston
ring
9
Low
compression
in
cylinders
can
result
from
worn
piston
rings
This
condition
may
usually
be
accompanied
by
excessive
fuel
consumption
TEST
RESULT
If
compression
in
one
or
more
cylinders
is
low
pour
a
small
quantity
of
engine
oil
into
cylinders
through
the
spark
plug
holes
and
retest
com
pression
I
If
adding
oil
increases
the
com
pression
pressure
the
chances
are
that
rings
are
faulty
2
If
pressure
stays
low
probable
cause
is
that
valve
is
sticking
or
seating
improperly
3
If
cylinder
compression
in
any
two
adjacent
cylinders
is
low
and
if
adding
oil
does
not
help
the
compres
sian
there
is
leakage
past
the
gasket
surface
Oil
and
water
in
combustion
cham
bers
can
result
from
leakage
IGNITION
AND
FUEL
SYSTEM
Fig
ET
10
Teding
compression
pressure
5
Depress
accelerator
pedal
to
open
throttle
and
choke
valves
Note
Do
not
pump
pedal
6
Start
engine
as
quickly
as
pos
sible
7
Compression
pressure
kg
cm2
psi
at
rpm
Standard
12
0
171
350
Minimum
9
0
128
350
8
Cylinder
compression
in
cylinders
Should
not
be
less
than
80
of
highest
reading
CONTENTS
CHECKING
BATTERY
ET
9
CHECKING
DISTRIBUTOR
CAP
ROTOR
CHECKING
AND
ADJUSTING
IGNITION
AND
CONDENSER
ET
11
TIMING
ET
10
CONDENSER
ET
11
ADJUSTING
IGNITION
TIMING
ET10
ADJUSTING
CARBURETOR
IDLE
RPM
CHECKING
AND
REPLACING
SPARK
PLUG
ETlO
AND
MIXTURE
RATIO
ET
11
CHECKING
DISTRIBUTOR
OPERATING
IDLE
LIMITER
CAP
ET
12
PARTS
AND
IGNITION
WIRING
ETlO
CHECKING
CARBURETOR
RETURN
SPRING
ET
12
BREAKER
POINTS
lNon
California
models
ET
10
CHECKING
CHOKE
MECHANISM
AI
R
GAP
lCalifornia
models
ET11
Choke
plate
and
linkage
ET13
DISTRIBUTOR
ET
11
CHECKING
FUEL
LINES
IGNITION
WIRING
ET
11
Hoses
pipings
connections
etc
ET
13
REPLACING
FUEL
FILTER
ET
13
CHECKING
BATTERY
Check
electrolyte
level
in
each
bat
tery
cell
I
Unscrew
each
filler
cap
and
inspect
fluid
level
If
the
fluid
is
low
add
distilled
water
to
bring
the
level
up
approximately
10
to
20
mm
0
39
H
9
to
0
79
in
above
the
plates
Do
not
overfill
2
Measure
the
specific
gravity
of
battery
electrolyte
No
load
test
Connect
starting
motor
in
series
with
specified
12
volts
battery
and
an
ammeter
capable
of
indicating
1
000
amperes
Starter
motor
Diagnoses
of
test
1
Low
speed
with
no
load
and
high
current
draw
may
result
from
the
following
1
Tight
dirty
or
worn
bearings
2
Bent
armature
shaft
or
loosened
field
probe
3
Shorted
armature
Check
armature
further
4
A
grounded
armature
or
field
a
Remove
input
tenninal
b
Raise
two
negative
side
brushes
from
commutator
c
Using
a
circuit
tester
place
one
probe
onto
input
tenninal
and
the
other
onto
yoke
d
I
f
tester
indicates
continuity
raise
the
other
two
brushes
and
check
field
and
armature
separately
to
determine
whether
field
or
armature
is
grounded
2
F
allure
to
operate
with
high
current
draw
may
be
caused
by
the
Engine
Electrical
System
Specified
current
draw
and
revolu
tion
in
these
test
are
shown
in
Specifications
Switch
6
Battery
Et
Voltmeter
Ammeter
Ee026
Fig
EE
20
No
load
l
ting
following
I
A
grounded
or
open
field
coil
Inspect
the
connection
and
trace
circuit
with
a
circuit
tester
2
Armature
coil
does
not
operate
Inspect
commutator
for
excessive
burning
In
this
case
arc
may
occur
on
damaged
commutator
when
motor
is
operated
with
no
load
3
Burned
out
commutator
bar
Weak
brush
spring
tension
broken
brush
spring
rubber
bush
thrust
out
of
mica
in
commu
tat
or
or
a
loose
contact
between
biush
and
com
mutator
would
cause
commutator
bar
to
burn
3
Low
current
draw
and
low
no
load
speed
would
cause
high
internal
resistance
due
to
loose
con
nections
damaged
leads
dirty
corn
mutator
and
causes
listed
on
item
2
3
EE10
MAGNETIC
SWITCH
ASSEMBLY
TEST
Switch
o
Fv
IB
I
I
D
Battery
Starter
motor
EE351
FiN
EE
21
Circuit
ofmagndic
awitch
assembly
ted
If
the
starting
motor
check
is
OK
check
magnetic
switch
as
sembly
Connect
cables
between
negative
battery
tenninal
and
start
ing
motor
M
terminal
positive
battery
terminal
and
starting
motor
S
terminal
connecting
a
switch
in
series
as
shown
in
Figure
EE
21
With
the
switch
on
push
pinion
back
to
remove
all
slack
and
measure
the
clearance
l
between
pinion
front
edge
and
pinion
stopper
The
clearance
should
be
held
within
0
3
to
1
5
mm
0
012
to
0
059
in
If
neces
sary
adjust
it
by
changing
or
adding
adjusting
washer
s
Adjusting
washers
are
available
in
to
two
different
sizes
0
5
mm
0
020
in
and
O
S
mm
0
031
in
0
3
to
I
S
rom
0
012
to
0
059
in
l
EE029
Fig
EE
22
MeO
uring
clearance
t
