Ford 1955 User Manual

Section
1
Trouble
Shooting
(4)
ENGINE
CONTINUALLY
MISSES
AT
IDLE.
When
the
engine
continually
misses
on
the same
cylinders,
the
fault
generally
lies
in
the
ignition
system.
(a)
Isolate the
miss
by
pulling
one
spark
plug
cable
at
a time
from
the plugs.
Remove the
plugs,
then
clean,
inspect,
and
adjust
them.
Replace those
that are
badly
fouled.
(b)
Check
the
spark
plug
wires
for
signs
of
deteriora
tion
and
corrosion.
Replace
as
necessary.
(c)
Remove the
distributor
cap
and
rotor,
then
clean
and
inspect
them. Replace if necessary.
(d)
If
none of
the
above
corrects the
condition,
check
the
compression
to determine if compression and
intake
manifold
passages
are
satisfactory.
(5)
ENGINE
MISSES ERRATICALLY
AT
IDLE.
This
may
be
caused
by
a
combination of things.
Check
the
following
in sequence
:
(a)
Carburetor,
including
choke
operation,
idle
mix
ture
setting,
and float
level.
(b)
The
ignition
system,
starting
with
the
spark
plugs,
if
the
carburetor
adjustment
does
not
eliminate
the
trouble.
Make
necessary
repairs.
(c)
The vacuum lines for leaks
at
all
lines and
fittings
if
the
miss is still
present.
Make
any
necessary
repairs.
(d)
Valve operation
and make
a
compression test
if
miss
persists.
(6)
ENGINE
MISFIRES
OR HESITATES
ON AC
CELERATION.
This
malfunction is
usually
a
combina
tion
of
faults
in the
ignition
and
fuel
system,
but
also
can
be caused
by
the
exhaust
system. Perform
the
following
checks
in
the
sequence
given:
(a)
Check
the
operation of the
accelerator
pump.
(b)
Check
the
operation
of the
exhaust
thermostat
valve.
If
sticking,
free
up
or replace
as
necessary.
(c)
Check the
paint
on the
intake
manifold
heat
riser
passage. If
the paint
is
not
burned
off,
the
passage
may
be
obstructed and
the carburetor
may
not be
vaporizing
the
gasoline
properly.
(d
)
Remove
the
spark
plugs, inspect,
clean
and
re-gap.
Replace
any
plugs
that are
defective or
lead
fouled.
(e)
Remove
the
distributor
cap
and
check
the
point
gap,
distributor
shaft
clearance,
condition of
cam
lobes,
and
points.
Make
necessary
repairs
or
replacements.
Check the
high
tension
wiring
for
signs
of
deterioration,
and
replace
if
necessary.
(f)
Make
a
coil and
condenser
check.
Replace
faulty
units.
(g)
Check fuel
pump
pressure
and adjust
carburetor
float
level.
(h)
If
the
problem still
persists,
take
compression
readings
and
check
the
valve
action.
Check
the
valve
spring
rates
and
assembled
height.
Repair
or replace
as
necessary.
(7)
ENGINE
DOES
NOT
DEVELOP
FULL
POWER.
Lack
of
power
is
usually
caused
by
poor
compression.
However,
some
preliminary
checks
should
be
made.
Make
certain
that
the
throttle
opens
all the
way
and
that the choke
remains
open.
(
a
)
After
preliminary
checks
are
made,
check the
com
pression.
This
should
quickly
indicate
whether
the
in
ternal
components
are
operating
properly.
(b)
If the
compression
checks
within
limits,
check the
ignition
system,
including
initial
timing
and
distributor
operation.
(c)
If
the
compression
and
the
ignition
system are
satisfactory,
check
the
fuel
system, including
carburetion
and
fuel
pump
pressure.
(d)
If
the
problem
still
exists,
a
check
of
mechanical
components must be
made.
Check
the
valve
lash,
lift,
and
timing.
Repair
or replace as
necessary.
b.
Fuel
System.
The fuel
system consists
of
the
fuel
tank,
fuel
pump,
carburetor,
and
connecting
lines.
Dirt and
other
foreign
material
are a
major source
of fuel system
problems,
and
all
components
should be
kept
as
clean
as
possible.
(1)
EXCESSIVE
FUEL
CONSUMPTION.
Faulty
carburetion
is
usually
responsible
for
excessive
fuel
con
sumption.
However,
the
following
preliminary
checks
should be
made.
Check
for fuel leaks
in
the
system,
check
choke operation
and
adjustment,
and
make
certain
the
accelerator linkage
is
free.
Check
to
see
if the brakes
are
dragging.
Then adjust
the
carburetor.
(a)
Verify
the complaint with test
equipment
installed
in the
vehicle.
Show the
customer
how
improper opera
tion
of the
vehicle
will affect
fuel
consumption.
(b)
If
test
shows
fuel consumption
to
be
excessive,
remove
the
carburetor
and
rebuild.
Since poor
carburetion
is
usually
a combination
of
internal
malfunctions,
it is
usually
not advisable
to
try
to
repair
only
one system
in
the
carburetor.
Time
will
be saved
by
a complete
car
buretor overhaul.
(2)
CARBURETOR
FLOODS.
Make
a
visual in
spection
of
the
carburetor
for
leaking
gaskets
or
casting
defects.
Tap
the
carburetor
bowl. If
the
flooding
stops,
the needle was
held
open
by
foreign
material. If
the
flooding
persists,
follow
the
steps
below:
(
a
)
Remove the air
cleaner and
check choke
operation.
(b)
Check
the float
level
and
the
condition of
the
carburetor float. Check
the
condition
of
the
needle
and
seat.
Replace
if
necessary.
(c)
Check fuel
pump
pressure. If
the
pressure
is ex
cessive,
the
pump
was
forcing
fuel
past
the
float
needle
and should
be rebuilt
or
replaced.
c.
Cooling
System.
The
cooling
system
is
thermostatically
controlled
to
regulate
engine
operating
temperature
and
provide
for
a
short
engine
warm-up
period.

Ford 1955 Specifications

General

Brand	Ford
Model	1955
Category	Automobile
Language	English