Ford Thunderbird 1957 - Rough Engine Idle; Poor Acceleration; Engine Does Not Develop Full Power

1-6
Chapter
1
General
Engine
Service
Table
1
General
Engine
Trouble
Shooting
(cont'd)
Engine
Runs,
But
Misses
(cont'd)
MISSES
AT
IDLE
ONLY.
Check
the:
Fuel system
(Part
2-Chapter
2).
Ignition system
(Part
2
Chapter
1).
Vacuum
booster
pump,
lines
and
fittings
for
leaks.
Valve lash
adjustment
(page
1-15).
Engine
compression for
low
compression (page
1-9).
MISSES
AT
HIGH
SPEED
ONLY. Check the:
Ignition system
(Part
2
Chapter
1).
Fuel
system
(Part
2-Chapter 2).
Cooling
system
for
overheating
or
internal leakage (Part
2
Chapter
3).
Rough
Engine Idle
Valve
lash
(page
1-15).
Exhaust
gas
control
valve (page 1-10).
Vacuum
booster
pump
(Part
2
Chapter 2).
Ignition System
(Part
2
Chapter 1).
Leaking
power
brake
vacuum
booster (Part
6
Chapter 2).
Fuel
system
(Part 2-Chapter
2).
Loose
engine
mounts (Part
1
Chapter 2 or 3).
Improper cylinder
head
bolt
torque.
Poor Acceleration
Ignition
system
(Part
2
Chapter 1).
Fuel
system (Part 2-Chapter 2).
Exhaust gas
control valve (page
1-10).
Valve lash adjustment
(page
1-15).
Dragging
brakes
(Part
6
Chapter 1).
Slipping
clutch
(Conventional
and
Overdrive
Transmission)
(Part
3
Chapter
1).
Improper
adjustment
of
the Fordomatic
transmission.
Engine Does
Not
Develop
Full
Power,
Or Has Poor High
Speed
Performance
Determine
if the
trouble exists
when the
engine
is
cold,
at normal
operating
temperature,
or at
all
engine
temperatures.
ENGINE
COLD
Exhaust gas
control
valve
(page
1-10).
Fuel
system (Part
2-Chapter
2).
Cooling
system
if the
engine reaches
operating
temperature
slowly
(Part
2
Chapter
3).
ENGINE
AT
NORMAL OPERATING TEMPERATURE
Exhaust gas
control
valve (page 1-10).
Fuel
system (Part
2-Chapter 2).
ALL
ENGINE
TEMPERATURES
Engine
compression
(page 1-9).
Ignition
system
(Part
2
Chapter 1).
Fuel
system (Part
2-Chapter
2).
Valve
lash
adjustment
(page
1-15).
Cam
lobe
lift
(page
1-19).
Valve
timing
(page 1-17).
Cooling
system if
the
engine overheats
(Part
2
Chapter
3).