Ford 1956 - Chapter I General Engine Overhaul, Inspection, and Repair; 1. TROUBLE SHOOTING

Part
ONE
POWER
PLANT
Chapter
i
Genera/
Engine
Overhaul,
Inspection,
and
Repair
Section
Page
1
Trouble
Shooting
5
2
Tune-Up
8
3
Engine
Removal
and
Installation
10
4
Intake
and
Exhaust
Manifolds
14
5
Rocker
Mechanism,
Cylinder
Head,
Valves,
Valve
Lash
Adjustment,
and
Valve
Timing
15
6
Timing
Chain,
Sprockets,
and
Camshaft
20
7
Flywheel,
Crankshaft,
and Main
Bearings
22
8
Cylinder
Block,
Pistons,
Piston
Rings,
and
Connecting
Rods and
Bearings
25
9
Oil
Pan
and
Oil
Pump
29
10
Exhaust System
30
Trouble
shooting;
tune-up;
the
cleaning,
inspection,
after
the
engine
has been disassembled.
and
repair of
component
parts;
and
overhaul
instruc-
To
completely
disassemble
or assemble
an
engine,
tions
are
covered
in
this chapter. follow all the
removal or
installation instructions
con-
The
cleaning,
inspection,
repair,
and
overhaul
instruc-
tained
in
the applicable
engine
chapter.
If
it
is
only
tions
apply
only
after
the
parts have
been
removed desired
to
remove
or
install
an individual
part,
refer
to
from
the
engine,
or in
the
case
of
a
complete
overhaul
the
applicable
section.
1. TROUBLE
SHOOTING
Trouble
shooting
is the
application of a
definite
pro
cedure,
in a
logical
sequence,
to
locate
and eliminate
the
cause
of trouble
in
a particular system or unit.
When
trouble
shooting,
first
look for
the
obvious causes
of
trouble,
such
as;
an
empty
gas
tank,
a wet or cold
en
gine,
loose or
disconnected
wiring,
or
any
other
item
that
may
cause
a
temporary
defect.
The
various factors that affect power
plant operation
are
outlined
in
this
section.
a.
Engine.
Poor
engine performance
can
be attributed to
the
engine
or
to
forces
on
the
car that tend to
retard its
motion.
For
example,
dragging
brakes
can
cause
the
engine
to
work
harder
which
will
result
in poor performance.
Engine
performance
depends
on proper
fuel
distribu
tion,
correctly
timed
ignition,
normal
and
uniform com
pression,
and
an
unobstructed
flow
of
exhaust
gases.
Engine
troubles,
their
causes,
and remedies
are
dis
cussed
under
appropriate
headings.
(1)
ENGINE
WILL
NOT
CRAISK. If
the
starter
does
not
turn
the
engine
over,
or
turns
it
over
too
slowly
to
start,
the
most
probable
causes are a defective
bat
tery
or
starter.
Perform the
following
checks
in
the
order
listed,
until
the
trouble
is located.
(a)
Check the Battery.
Try
the
horn
or
lights.
If
they
do
not operate
properly,
test
the
battery. Recharge
or
replace the
battery
as necessary.
(b)
Check the
Battery
Cables.
Check for
loose
or
corroded
connections at
the
starter, relay, battery,
and
ground.
Clean,
tighten or replace
them
as
necessary.
(c)
Check
the
Starter Relay
Circuit. The
relay
contact
surfaces
seldom
become so
badly
burned that
they
will
prevent the
starter
from
cranking
the engine.
However,
other
wiring may
be at
fault.
Repair as nec
essary.
Refer
to
Part
THREE,
"Electrical and Ac
cessories."
(d)
Check the
Starter
or
Starter
Drive.
If
the
above
components
are
not
at
fault,
the
trouble
is prob
ably
in the starter or starter
drive.
If
the
starter
is
run
ning,
but
not
engaging
the
flywheel,
remove
the
starter
and
make
the
necessary
repairs
to the
starter
drive.
In
rare
cases,
the
starter
drive
may
lock
up
with
the
fly
wheel.
This
can
be corrected
by
loosening
the
starter
and
releasing
the starter
drive.
If
the
starter
does
not
operate,
remove
it
and
make
the
necessary
repairs.
(2)
ENGINE
CRANKS.
BUT
WILL NOT
START.
The
trouble
probably
lies
in
either
the
ignition
system
or the fuel
system. The
following
test
will
determine
which
system
is
at fault:
Remove the ignition
wire from
one
spark
plug,
and